GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
Features
Compliant to RoHS EU Directive 2002/95/EC
Compatible in a Pb-free or SnPb reflow environment
Wide Input voltage range (8Vdc-16Vdc)
Output voltage programmable from 0.59Vdc
to 8.0Vdc via external resistor
Tunable LoopTM to optimize dynamic output
voltage response
Remote sense
Power Good signal
Fixed switching frequency
Output overcurrent protection (non-latching)
Overtemperature protection
Remote On/Off
Ability to sink and source current
Cost efficient open frame design
Small size: 12.2 mm x 12.2 mm x 7.25 mm
(0.48 in x 0.48 in x 0.29 in)
Wide operating temperature range (-40°C to
85°C)
UL* Recognized to UL60950-1, CAN/CSA†
C22.2 No. 60950-1-03, and EN60950-1(VDE‡
0805-1) Licensed
ISO** 9001 and ISO 14001 certified
manufacturing facilities
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Industrial equipment
Description
The 16V PicoTLynxTM 4A power modules are non-isolated dc-dc converters that can deliver up to 4A of output current. These modules
operate over a wide range of input voltage (VIN = 8Vdc-16Vdc) and provide a precisely regulated output voltage from 0.59Vdc to 8.0
Vdc, programmable via an external resistor. Features include remote On/Off, adjustable output voltage, over current and over
temperature protection. A new feature, the Tunable LoopTM, allows the user to optimize the dynamic response of the converter to
match the load with reduced amount of output capacitance leading to savings on cost and PWB area.
* UL is a registered trademark of Underwriters Laboratories, Inc.
† CSA is a registered trademark of Canadian Standards Association.
‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
TRIM
VOUT
SENSE
GND
CTUNE
RTUNE
RTrim
VIN
Co
Cin
Vin+ Vout+
ON/OFF
Q1
PGOOD
MODULE
RoHS Compliant
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 2
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only,
functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of
the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability.
Parameter Device Symbol Min Max Unit
Input Voltage All VIN -0.3 18 Vdc
Up to 10 seconds
Operating Ambient Temperature All TA -40 85 °C
(see Thermal Considerations section)
Storage Temperature All Tstg -55 125 °C
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.
Parameter Device Symbol Min Typ Max Unit
Operating Input Voltage All VIN 8.0 ⎯ 16.0 Vdc
Maximum Input Current All IIN,max 6.5 Adc
(VIN=8V to 16V, IO=IO, max )
Input No Load Current
(VIN = 16.0Vdc, IO = 0, module enabled)
VO,set = 0.6 Vdc IIN,No load 18 mA
VO,set = 8.0Vdc IIN,No load 96.1 mA
Input Stand-by Current
(VIN = 16.0Vdc, module disabled) All IIN,stand-by 1.2 mA
Inrush Transient All I2t 1 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; VIN =0 to 16V,
IO= IOmax ; See Test Configurations)
All 50 mAp-p
Input Ripple Rejection (120Hz) All -46 dB
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of
sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included; however, to achieve maximum safety
and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 6 A (see
Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input current, the
same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data sheet for further information.
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 3
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set-point (with 0.5% tolerance for external
resistor used to set output voltage) All VO, set -1.5 +1.5 % VO, set
Output Voltage (Over all operating input voltage, resistive
load, and temperature conditions until end of life) All VO, set -2.5 ⎯ +2.5 % VO, set
Adjustment Range (selected by an external resistor)
(Some output voltages may not be possible depending on
the input voltage – see Feature Descriptions Section)
All VO 0.59 8.0 Vdc
Remote Sense Range All 0.5 Vdc
Output Regulation (for VO ≥ 2.5Vdc)
Line (VIN=VIN, min to VIN, max) All
⎯ +0.4 % VO, set
Load (IO=IO, min to IO, max) All
⎯ 10mV % VO, set
Output Regulation (for VO < 2.5Vdc)
Line (VIN=VIN, min to VIN, max) All
⎯ 10 mV
Load (IO=IO, min to IO, max) All
⎯ 5 mV
Temperature (Tref=TA, min to TA, max) All
⎯ 0.4 % VO, set
Remote Sense Range All 0.5 V
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max Co = 0.1μF // 10 μF
ceramic ca
p
acitors)
Peak-to-Peak (5Hz to 20MHz bandwidth) All ⎯ 90 100 mVpk-pk
RMS (5Hz to 20MHz bandwidth) All 36 38 mVrms
External Capacitance1
Without the Tunable LoopTM
ESR ≥ 1 mΩ All CO, max 0 ⎯ 22 μF
With the Tunable LoopTM
ESR ≥0.15 mΩ All CO, max 0 ⎯ 470 μF
ESR ≥ 10 mΩ All CO, max 0 ⎯ 3000 μF
Output Current (in either sink or source mode) All Io 0 4 Adc
Output Current Limit Inception (Hiccup Mode)
(current limit does not operate in sink mode) All IO, lim 200 % Io,max
Output Short-Circuit Current All IO, s/c 200 mArms
(VO≤250mV) ( Hiccup Mode )
Efficiency VO,set = 0.6Vdc η 74.2 %
VIN= 12Vdc, TA=25°C VO, set = 1.2Vdc η 83.7 %
IO=IO, max , VO= VO,set V
O,set = 1.8Vdc η 87.7 %
V
O,set = 2.5Vdc η 90.2 %
V
O,set = 3.3Vdc η 91.7 %
V
O,set = 5.0Vdc η 93.7 %
V
O,set = 6.5Vdc η 94.9 %
V
O,set = 8.0Vdc η 96.1 %
Switching Frequency All fsw ⎯ 600 ⎯ kHz
1External capacitors may require using the new Tunable LoopTM feature to ensure that the module is stable as well as getting the best transient
response. See the Tunable LoopTM section for details.
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 4
General Specifications
Parameter Min Typ Max Unit
Calculated MTBF (IO=0.8IO, max, TA=40°C) Telcordia Issue 2 Method 1 Case 3 14,353,850 Hours
Weight ⎯ 1.92 (0.0677) ⎯ g (oz.)
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature
Descriptions for additional information.
Parameter Device Symbol Min Typ Max Unit
On/Off Signal Interface
(VIN=VIN, min to VIN, max ; open collector or equivalent,
Signal referenced to GND)
Device is with suffix “4” – Positive Logic (See Ordering
Information)
Logic High (Module ON)
Input High Current All IIH ⎯ 10 µA
Input High Voltage All VIH 3.5 ⎯ VIN,max V
Logic Low (Module OFF)
Input Low Current All IIL ⎯ ⎯ 1 mA
Input Low Voltage All VIL -0.3 ⎯ 0.8 V
Device Code with no suffix – Negative Logic (See Ordering
Inf
o
rm
at
i
o
n
)
(On/OFF pin is open collector/drain logic input with
external pull-up resistor; signal referenced to GND)
Logic High (Module OFF)
Input High Current All IIH — — 1 mA
Input High Voltage All VIH 3.5 — VIN, max Vdc
Logic Low (Module ON)
Input low Current All IIL — — 10 μA
Input Low Voltage All VIL -0.2 — 0.3 Vdc
Turn-On Delay and Rise Times
(VIN=VIN, nom, IO=IO, max , VO to within ±1% of steady state)
Case 1: On/Off input is enabled and then input power is
applied (delay from instant at which VIN = VIN, min until Vo
=
10% of Vo, set)
All Tdelay — 2 — msec
Case 2: Input power is applied for at least one second
and
then the On/Off input is enabled (delay from instant at
which Von/Off is enabled until Vo = 10% of Vo, set)
All Tdelay — 2 — msec
Output voltage Rise time (time for Vo to rise from
10% of Vo, set to 90% of Vo, set) All Trise — 4 — msec
Output voltage overshoot (TA = 25oC 3 % VO, set
VIN= VIN, min to VIN, max,IO = IO, min to IO, max)
With or without maximum external capacitance
Over Temperature Protection All Tref 140 °C
(See Thermal Considerations section)
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 5
Feature Specifications (cont.)
Parameter Device Symbol Min Typ Max Units
Input Undervoltage Lockout
Turn-on Threshold All 4.0 Vdc
Turn-off Threshold All 3.6 Vdc
Hysteresis All
0.4 Vdc
PGOOD (Power Good)
Signal Interface Open Drain, Vsupply ≤ 5VDC
Output Voltage Limit for PGOOD All 90% 110% VO, set
Pulldown resistance of PGOOD pin All 7 50 Ω
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 6
Characteristic Curves
The following figures provide typical characteristics for the 16V PicoTLynxTM 4A at 0.6Vo and at 25oC.
EFFICIENCY, η (%)
50
55
60
65
70
75
80
85
01234
Vin=8V
OUTPUT CURRENT, Io (A)
0.5
1.5
2.5
3.5
4.5
20 30 40 50 60 70 80 90
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 1. Converter Efficiency versus Output Current. Figure 2. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
VO (V) (10mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2Adiv) VO (V) (500mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 3. Typical output ripple and noise (VIN = 8V, Io = Io,max). Figure 4. Transient Response to Dynamic Load
Change from 0% to 50% to 0% .
OUTPUT VOLTAGE ON
/
OFF VOLTAGE
VO (V) (200mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
VO (V) (200MV/div) Vin (V) (10v/div)
TIME, t (2 ms/div) TIME, t (2 ms/div)
Figure 5. Typical Start-up Using On/Off Voltage (Io = Io,max, VIN =
8V)
Figure 6. Typical Start-up Using Input Voltage (VIN =
8V, Io = Io,max).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 7
Characteristic Curves
The following figures provide typical characteristics for the 16V PicoTLynxTM 4A at 1.2Vo and at 25oC.
EFFICIENCY, η (%)
50
55
60
65
70
75
80
85
90
01234
Vin=16V
Vin=12V
Vin=8V
OUTPUT CURRENT, Io (A)
0.5
1.5
2.5
3.5
4.5
20 30 40 50 60 70 80 9
0
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 7. Converter Efficiency versus Output Current. Figure 8. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
VO (V) (10mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2Adiv) VO (V) (500mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 9. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 10. Transient Response to Dynamic Load Change
from 0% to 50% to 0%.
OUTPUT VOLTAGE ON
/
OFF VOLTAGE
VO(V) (500mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V0 (V) (500mV/div) VIN (V) (10V/div)
TIME, t (2 ms/div) TIME, t (2 ms/div)
Figure 11. Typical Start-up Using On/Off Voltage (Io = Io,max ,VIN = 8V). Figure 12. Typical Start-up Using Input Voltage (VIN = 8V, Io
= Io,max).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 8
Characteristic Curves
The following figures provide typical characteristics for the 16V PicoTLynxTM 4A at 1.8Vo and at 25oC.
EFFICIENCY, η (%)
50
55
60
65
70
75
80
85
90
95
01234
Vin=16V
Vin=12V
Vin=8V
OUTPUT CURRENT, Io (A)
0.5
1.5
2.5
3.5
4.5
20 30 40 50 60 70 80 90
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 13. Converter Efficiency versus Output Current. Figure 14. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2Adiv) VO (V) (500mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 15. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 16. Transient Response to Dynamic Load Change
from 0% to 50% to 0%.
OUTPUT VOLTAGE ON
/
OFF VOLTAGE
VO(V) (500mV/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V0 (V) (500mV/div) VIN (V) (10V/div)
TIME, t (2 ms/div) TIME, t (2 ms/div)
Figure 17. Typical Start-up Using On/Off Voltage (Io = Io,max). Figure 18. Typical Start-up Using Input Voltage (VIN = 12V,
Io = Io,max).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 9
Characteristic Curves
The following figures provide typical characteristics for the 16V PicoTLynxTM 4A at 2.5Vo and at 25oC.
EFFICIENCY, η (%)
50
55
60
65
70
75
80
85
90
95
Vin=16V
Vin=12V
Vin=8V
OUTPUT CURRENT, Io (A)
0.5
1.5
2.5
3.5
4.5
20 30 40 50 60 70 80 90
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 19. Converter Efficiency versus Output Current. Figure 20. Derating Output Current versus
Ambient Temperature and Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT
CURRENT
,
OUTPUT
VOLTAGE
IO (A) (2Adiv) VO (V) (500mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 21. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 22. Transient Response to Dynamic Load
Change from 0% to 50% to 0%.
OUTPUT VOLTAGE ON/OFF VOLTAGE
VO(V) (1V/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V0 (V) (1V/div) VIN (V) (10V/div)
TIME, t (2 ms/div) TIME, t (2 ms/div)
Figure 23. Typical Start-up Using On/Off Voltage (Io = Io,max). Figure 24. Typical Start-up Using Input Voltage (VIN = 12V,
Io = Io,max).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 10
Characteristic Curves
The following figures provide typical characteristics for the 16V PicoTLynxTM 4A at 3.3Vo and at 25oC.
EFFICIENCY, η (%)
70
75
80
85
90
95
01234
Vin=16V
Vin=12V
Vin=8V
OUTPUT CURRENT, Io (A)
0.5
1.5
2.5
3.5
4.5
20 30 40 50 60 70 80 9
0
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 25. Converter Efficiency versus Output Current. Figure 26. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
VO (V) (20mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2Adiv) VO (V) (500mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 27. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 28. Transient Response to Dynamic Load Change
from 0% 50% to 0%.
OUTPUT
VOLTAGE
ON/OFF
VOLTAGE
VO(V) (1V/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V0 (V) (1V/div) VIN (V) (10V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 29. Typical Start-up Using On/Off Voltage (Io = Io,max). Figure 30. Typical Start-up Using Input Voltage (VIN =
12V, Io = Io,max).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 11
Characteristic Curves
The following figures provide typical characteristics for the 16V PicoTLynxTM 4A at 5.0 Vo and at 25oC.
EFFICIENCY, η (%)
55
60
65
70
75
80
85
90
95
100
01234
Vin=16V
Vin=12V
Vin=8V
OUTPUT CURRENT, Io (A)
0.5
1.5
2.5
3.5
4.5
20 30 40 50 60 70 80 90
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 31. Converter Efficiency versus Output Current. Figure 31. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
VO (V) (50mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2Adiv) VO (V) (500mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 33. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 34. Transient Response to Dynamic Load Change
from 0% 50% to 0%.
OUTPUT VOLTAGE ON
/
OFF VOLTAGE
VO(V) (2V/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V0 (V) (2V/div) VIN (V) (10V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 35. Typical Start-up Using On/Off Voltage (Io = Io,max). Figure 36. Typical Start-up Using Input Voltage (VIN = 12V, Io
= Io,max).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 12
Characteristic Curves
The following figures provide typical characteristics for the 16V PicoTLynxTM 4A at 6.5 Vo and at 25oC.
EFFICIENCY, η (%)
55
60
65
70
75
80
85
90
95
100
01234
Vin=16V
Vin=12V
Vin=8V
OUTPUT CURRENT, Io (A)
0.5
1.5
2.5
3.5
4.5
20 30 40 50 60 70 80 9
0
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 37. Converter Efficiency versus Output Current. Figure 38. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
VO (V) (50mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2Adiv) VO (V) (500mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 39. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 40. Transient Response to Dynamic Load Change
from 0% 50% to 0%.
O
UTPUT
VO
LTA
G
E
O
N
/O
FF
VO
LTA
G
E
VO(V) (2V/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V0 (V) (2V/div) VIN (V) (10V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 41. Typical Start-up Using On/Off Voltage (Io = Io,max). Figure 42. Typical Start-up Using Input Voltage (VIN = 12V,
Io = Io,max).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 13
Characteristic Curves
The following figures provide typical characteristics for the 16V PicoTLynxTM 4A at 8.0Vo and at 25oC.
EFFICIENCY, η (%)
OUTPUT CURRENT, Io (A)
0.5
1.5
2.5
3.5
4.5
20 30 40 50 60 70 80 90
NC
OUTPUT CURRENT, IO (A) AMBIENT TEMPERATURE, TA OC
Figure 43. Converter Efficiency versus Output Current. Figure 44. Derating Output Current versus Ambient
Temperature and Airflow.
OUTPUT VOLTAGE
VO (V) (50mV/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (2Adiv) VO (V) (500mV/div)
TIME, t (1μs/div) TIME, t (20μs /div)
Figure 45. Typical output ripple and noise (VIN = 12V, Io = Io,max). Figure 46. Transient Response to Dynamic Load Change
from 0% 50% to 0%.
OUTPUT VOLTAGE ON
/
OFF VOLTAGE
VO(V) (2V/div) VON/OFF (V) (5V/div)
OUTPUT VOLTAGE INPUT VOLTAGE
V0 (V) (2V/div) VIN (V) (10V/div)
TIME, t (2ms/div) TIME, t (2ms/div)
Figure 47. Typical Start-up Using On/Off Voltage (Io = Io,max). Figure 48. Typical Start-up Using Input Voltage (VIN =
12V, Io = Io,max).
55
60
65
70
75
80
85
90
95
100
01234
Vin=16V
Vin=12V
Vin=10V
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 14
Test Configurations
TO OSCILLOSCOPE CURRENT PROBE
LTEST
1μH
BATTERY
CS 1000μF
Electrolytic
E.S.R.<0.1Ω
@ 20°C 100kHz
2x100μF
Tantalum
VIN(+)
COM
NOTE: Measure input reflected ripple current with a simulated
source inductance (LTEST) of 1μH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
CIN
Figure 49. Input Reflected Ripple Current Test Setup.
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid me asurement errors due to socket contact
resistance.
Vo+
COM
0.1uF
RESISTIVE
LOAD
SCOPE U SING
BNC SOCKET
COPPER STRIP
GROUND PLANE
10uF
Figure 50. Output Ripple and Noise Test Setup
VO
COM
VIN(+)
COM
RLOAD
Rcontact Rdistribution
Rcontact Rdistribution
Rcontact
Rcontact
Rdistribution
Rdistribution
VIN VO
NOTE: All voltage measurements to be taken at the module
terminals, as shown above. If sockets are used then
Kelvin connections are required at the module terminals
to avoid measurement errors due to socket contact
resistance.
Figure 51. Output Voltage and Efficiency Test Setup.
η =
VO. IO
VIN. IIN
x 100 %
Efficiency
Design Considerations
Input Filtering
The 16V PicoTLynxTM 4A module should be connected to a low
ac-impedance source. A highly inductive source can affect
the stability of the module. An input capacitance must be
placed directly adjacent to the input pin of the module, to
minimize input ripple voltage and ensure module stability.
To minimize input voltage ripple, ceramic capacitors are
recommended at the input of the module. Figure 52 shows the
input ripple voltage for various output voltages at 4A of load
current with 1x10 µF or 1x22 µF ceramic capacitors and an
input of 12V.
Input Ripple Voltage (mVp-p)
0
50
100
150
200
250
300
350
0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5
1x10uF
1x22uF
Output Voltage (Vdc)
Figure 52. Input ripple voltage for various output voltages
with 1x10 µF or 1x22 µF ceramic capacitors at the input (4A
load). Input voltage is 12V.
Output Filtering
The 16V PicoTLynxTM 4A modules are designed for low output
ripple voltage and will meet the maximum output ripple
specification with 0.1 µF ceramic and 10 µF ceramic
capacitors at the output of the module. However, additional
output filtering may be required by the system designer for a
number of reasons. First, there may be a need to further
reduce the output ripple and noise of the module. Second, the
dynamic response characteristics may need to be customized
to a particular load step change.
To reduce the output ripple and improve the dynamic
response to a step load change, additional capacitance at the
output can be used. Low ESR polymer and ceramic capacitors
are recommended to improve the dynamic response of the
module. Figure 53 provides output ripple information for
different external capacitance values at various Vo and for a
load current of 4A. For stable operation of the module, limit the
capacitance to less than the maximum output capacitance as
specified in the electrical specification table. Optimal
performance of the module can be achieved by using the
Tunable LoopTM feature described later in this data sheet.
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 15
0
10
20
30
40
50
60
70
80
90
100
0.5 2.5 4.5 6.5
Output Voltage(Volts)
Ripple (mVp-p)
1x10uF External Cap
1x47uF External Cap
2x47uF External Cap
4x47uF External Cap
Figure 53. Output ripple voltage for various output voltages
with external 1x10 µF, 1x47 µF, 2x47 µF or 4x47 µF ceramic
capacitors at the output (4A load). Input voltage is 12V.
Safety Considerations
For safety agency approval the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standards, i.e., UL
60950-1, CSA C22.2 No. 60950-1-03, and VDE 0850:2001-12
(EN60950-1) Licensed.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the input must
meet SELV requirements. The power module has extra-low
voltage (ELV) outputs when all inputs are ELV.
The input to these units is to be provided with a fast-acting
fuse with a maximum rating of 6A in the positive input lead.
Feature Descriptions
Remote Enable
The 16V PicoTLynxTM 4A power modules feature an On/Off pin
for remote On/Off operation. Two On/Off logic options are
available. In the Positive Logic On/Off option, (device code
suffix “4” – see Ordering Information), the module turns ON
during a logic High on the On/Off pin and turns OFF during a
logic Low. With the Negative Logic On/Off option, (no device
code suffix, see Ordering Information), the module turns OFF
during logic High and ON during logic Low. The On/Off signal
is always referenced to ground. For either On/Off logic option,
leaving the On/Off pin disconnected will turn the module ON
when input voltage is present.
For positive logic modules, the circuit configuration for using
the On/Off pin is shown in Figure 54.
1.5MEG
Q1
GND
ON/OFF
VIN+
_
+ PWM Enable
I
V
ON/OFF
MODULE
Rpullup
ON/OFF
2.05K
Figure 54. Circuit configuration for using positive On/Off
logic.
For negative logic On/Off modules, the circuit configuration is
shown in Fig. 55.
1.5MEG
Q2
VIN+
GND
+
PWM Enable
ON/OFF
ON/OFF
_
MODULE
I
V
Rpullup
ON/OFF
22K
Q1
22K
Figure 55. Circuit configuration for using negative On/Off
logic.
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 16
Overcurrent Protection
To provide protection in a fault (output overload) condition, the
unit is equipped with internal current-limiting circuitry and can
endure current limiting continuously. At the point of
current-limit inception, the unit enters hiccup mode. The unit
operates normally once the output current is brought back into
its specified range.
Overtemperature Protection
To provide protection in a fault condition, the unit is equipped
with a thermal shutdown circuit. The unit will shutdown if the
overtemperature threshold of 140oC is exceeded at the thermal
reference point Tref . The thermal shutdown is not intended as a
guarantee that the unit will survive temperatures beyond its
rating. Once the unit goes into thermal shutdown it will then
wait to cool before attempting to restart.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout limit,
the module operation is disabled. The module will begin to
operate at an input voltage above the undervoltage lockout
turn-on threshold.
Output Voltage Programming
The output voltage of the 16V PicoTLynxTM 4A modules can be
programmed to any voltage from 0.59dc to 8.0Vdc by
connecting a resistor between the Trim and GND pins of the
module. Certain restrictions apply on the output voltage set
point depending on the input voltage. These are shown in the
Output Voltage vs. Input Voltage Set Point Area plot in Fig. 56.
0
2
4
6
8
10
12
14
16
18
0.511.522.533.544.555.566.577.58
Output Voltage (V)
Input Voltage (v)
Figure 56. Output Voltage vs. Input Voltage Set Point Area
plot showing limits where the output voltage can be set for
different input voltages.
Without an external resistor between Trim and GND pins, the
output of the module will be 0.59Vdc. To calculate the value of
the trim resistor, Rtrim for a desired output voltage, use the
following equation:
()
Ω
−
=k
Vo
Rtrim
591.0
91.5
Rtrim is the external resistor in kΩ
Vo is the desired output voltage.
Table 1 provides Rtrim values required for some common
output voltages.
Table 1
VO, set (V) Rtrim (KΩ)
0.6 656.7
1.0 14.45
1.2 9.704
1.5 6.502
1.8 4.888
2.5 3.096
3.3 2.182
5.0 1.340
6.5 1.000
8.0 0.798
By using a ±0.5% tolerance trim resistor with a TC of ±100ppm,
a set point tolerance of ±1.5% can be achieved as specified in
the electrical specification.
Remote Sense
The 16V PicoTLynxTM 4A power modules have a Remote Sense
feature to minimize the effects of distribution losses by
regulating the voltage at the SENSE pin. The voltage between
the SENSE pin and VOUT pin must not exceed 0.5V. Note that
the output voltage of the module cannot exceed the specified
maximum value. This includes the voltage drop between the
SENSE and Vout pins. When the Remote Sense feature is not
being used, connect the SENSE pin to the VOUT pin.
VO(+)
TRIM
GND
Rtr i m
LOAD
VIN(+)
ON/OFF
SENSE
Figure 57. Circuit configuration for programming output
voltage using an external resistor.
Voltage Margining
Output voltage margining can be implemented in the 16V
PicoTLynxTM 4A modules by connecting a resistor, Rmargin-up, from
the Trim pin to the ground pin for margining-up the output
voltage and by connecting a resistor, Rmargin-down, from the Trim
pin to output pin for margining-down. Figure 10 shows the
circuit configuration for output voltage margining. The POL
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 17
Programming Tool, available at www.lineagepower.com under
the Design Tools section, also calculates the values of Rmargin-up
and Rmargin-down for a specific output voltage and % margin.
Please consult your local Lineage Power technical representative
for additional details.
Vo
MODULE
GND
Trim
Q1
Rtrim
Rmargin-up
Q2
Rmargin-down
Figure 58. Circuit Configuration for margining Output
voltage.
Monotonic Start-up and Shutdown
The 16V PicoTLynxTM 4A modules have monotonic start-up and
shutdown behavior for any combination of rated input voltage,
output current and operating temperature range.
Startup into Pre-biased Output
The 16V PicoTLynxTM 4A modules can start into a prebiased
output as long as the prebias voltage is 0.5V less than the set
output voltage. Note that prebias operation is not supported
when output voltage sequencing is used.
Power Good
The 16V PicoTLynxTM 4A modules provide a Power Good
(PGOOD) signal that is implemented with an open-drain output
to indicate that the output voltage is within the regulation
limits of the power module. The PGOOD signal will be de-
asserted to a low state if any condition such as
overtemperature, overcurrent or loss of regulation occurs that
would result in the output voltage going ±10% outside the
setpoint value. The PGOOD terminal should be connected
through a pullup resistor (suggested value 100KΩ) to a source
of 5VDC or lower.
Tunable LoopTM
The 16V PicoTLynxTM 4A modules have a new feature that
optimizes transient response of the module called Tunable
LoopTM.
External capacitors are usually added to the output of the
module for two reasons: to reduce output ripple and noise (see
Fig. 53) and to reduce output voltage deviations from the
steady-state value in the presence of dynamic load current
changes. Adding external capacitance however affects the
voltage control loop of the module, typically causing the loop
to slow down with sluggish response. Larger values of external
capacitance could also cause the module to become unstable.
The Tunable LoopTM allows the user to externally adjust the
voltage control loop to match the filter network connected to
the output of the module. The Tunable LoopTM is implemented
by connecting a series R-C between the SENSE and TRIM pins
of the module, as shown in Fig. 59. This R-C allows the user to
externally adjust the voltage loop feedback compensation of
the module.
MODULE
VOUT
SENSE
TRIM
GND
RTUNE
CTUNE
RTrim
C O
Figure. 59. Circuit diagram showing connection of RTUME and
CTUNE to tune the control loop of the module.
Recommended values of RTUNE and CTUNE for different output
capacitor combinations are given in Tables 2 and 3. Table 2
shows the recommended values of RTUNE and CTUNE for
different values of ceramic output capacitors up to 470μF that
might be needed for an application to meet output ripple and
noise requirements. Selecting RTUNE and CTUNE according to
Table 2 will ensure stable operation of the module.
In applications with tight output voltage limits in the presence
of dynamic current loading, additional output capacitance will
be required. Table 3 lists recommended values of RTUNE and
CTUNE in order to meet 2% output voltage deviation limits for
some common output voltages in the presence of a 2A to 4A
step change (50% of full load), with an input voltage of 16V.
Please contact your Lineage Power technical representative to
obtain more details of this feature as well as for guidelines on
how to select the right value of external R-C to tune the
module for best transient performance and stable operation
for other output capacitance values or input voltages other
than 16V.
Table 2. General recommended values of of RTUNE and CTUNE
for Vin=12V and various external ceramic capacitor
combinations.
Vo=6.5
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 18
Co 1x47
μ
F 2x47
μ
F 4x47
μ
F 6x47
μ
F 10x47
μ
F
RTUNE 150 150 100 75 75
CTUNE 2700pF 5600pF 10nF 12nF 18nF
Vo=1.8
Co 1x47
μ
F 2x47
μ
F 4x47
μ
F 6x47
μ
F 10x47
μ
F
RTUNE 100 75 75 75 75
CTUNE 6800pF 12nF 18nF 18nF 18nF
Table 3. Recommended values of RTUNE and CTUNE to obtain
transient deviation of ≤2% of Vout for a 2A step load with
Vin=16V.
Vo 8V 6.5V 5V 3.3V 2.5V 1.8V
Co 1x47μF 2x47μF 2x47μF 2x47μF 3x47μF 4x47μF
RTUNE 150 150 100 100 75 75
CTUNE 2700pF 5600pF 6900pF 8200pF 12nF 18nF
ΔV 160mV 87mV 69mV 61mV 43mV 33mV
Vo 1.2V 0.6V
Co
1
x 330μF
Polymer
1x47μF +
2
x330μF
Polymer
RTUNE 75 75
CTUNE 56nF 100nF
ΔV 21mV 11.4mV
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 19
Thermal Considerations
Power modules operate in a variety of thermal environments;
however, sufficient cooling should always be provided to help
ensure reliable operation.
Considerations include ambient temperature, airflow, module
power dissipation, and the need for increased reliability. A
reduction in the operating temperature of the module will
result in an increase in reliability. The thermal data presented
here is based on physical measurements taken in a wind
tunnel. The test set-up is shown in Figure 60. The preferred
airflow direction for the module is in Figure 61.
A
i
r
flow
x
Power Module
W
ind Tunnel
PWBs
12.7_
(0.50)
76.2_
(3.0)
Probe Location
for measuring
airflow and
ambient
temperature
25.4_
(1.0)
Figure 60. Thermal Test Setup.
The thermal reference points, Tref used in the specifications are
also shown in Figure 60. For reliable operation the
temperatures at these points should not exceed 120oC. The
output power of the module should not exceed the rated
power of the module (Vo,set x Io,max).
Please refer to the Application Note “Thermal Characterization
Process For Open-Frame Board-Mounted Power Modules” for a
detailed discussion of thermal aspects including maximum
device temperatures.
Figure 61. Preferred airflow direction and location of hot-
spot of the module (Tref).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 20
Shock and Vibration
The ruggedized (-D version) of the modules are designed to withstand elevated levels of shock and vibration to be able to operate in
harsh environments. The ruggedized modules have been successfully tested to the following conditions:
Non operating random vibration:
Random vibration tests conducted at 25C, 10 to 2000Hz, for 30 minutes each level, starting from 30Grms (Z axis) and up to 50Grms (Z
axis). The units were then subjected to two more tests of 50Grms at 30 minutes each for a total of 90 minutes.
Operating shock to 40G per Mil Std. 810F, Method 516.4 Procedure I:
The modules were tested in opposing directions along each of three orthogonal axes, with waveform and amplitude of the shock
impulse characteristics as follows:
All shocks were half sine pulses, 11 milliseconds (ms) in duration in all 3 axes.
Units were tested to the Functional Shock Test of MIL-STD-810, Method 516.4, Procedure I - Figure 516.4-4. A shock magnitude of 40G
was utilized. The operational units were subjected to three shocks in each direction along three axes for a total of eighteen shocks.
Operating vibration per Mil Std 810F, Method 514.5 Procedure I:
The ruggedized (-D version) modules are designed and tested to vibration levels as outlined in MIL-STD-810F, Method 514.5, and
Procedure 1, using the Power Spectral Density (PSD) profiles as shown in Table 4 and Table 5 for all axes. Full compliance with
performance specifications was required during the performance test. No damage was allowed to the module and full compliance to
performance specifications was required when the endurance environment was removed. The module was tested per MIL-STD-810,
Method 514.5, Procedure I, for functional (performance) and endurance random vibration using the performance and endurance levels
shown in Table 4 and Table 5 for all axes. The performance test has been split, with one half accomplished before the endurance test
and one half after the endurance test (in each axis). The duration of the performance test was at least 16 minutes total per axis and at
least 120 minutes total per axis for the endurance test. The endurance test period was 2 hours minimum per axis.
Table 4: Performance Vibration Qualification - All Axes
Frequency (Hz) PSD Level (G2/Hz) Frequency (Hz) PSD Level
(G2/Hz) Frequency (Hz) PSD Level
(G2/Hz)
10 1.14E-03 170 2.54E-03 690 1.03E-03
30 5.96E-03 230 3.70E-03 800 7.29E-03
40 9.53E-04 290 7.99E-04 890 1.00E-03
50 2.08E-03 340 1.12E-02 1070 2.67E-03
90 2.08E-03 370 1.12E-02 1240 1.08E-03
110 7.05E-04 430 8.84E-04 1550 2.54E-03
130 5.00E-03 490 1.54E-03 1780 2.88E-03
140 8.20E-04 560 5.62E-04 2000 5.62E-04
Table 5: Endurance Vibration Qualification - All Axes
Frequency (Hz) PSD Level
(G2/Hz) Frequency (Hz) PSD Level
(G2/Hz) Frequency (Hz) PSD Level
(G2/Hz)
10 0.00803 170 0.01795 690 0.00727
30 0.04216 230 0.02616 800 0.05155
40 0.00674 290 0.00565 890 0.00709
50 0.01468 340 0.07901 1070 0.01887
90 0.01468 370 0.07901 1240 0.00764
110 0.00498 430 0.00625 1550 0.01795
130 0.03536 490 0.01086 1780 0.02035
140 0.0058 560 0.00398 2000 0.00398
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 21
Example Application Circuit
Requirements:
Vin: 16V
Vout: 1.8V
Iout: 3A max., worst case load transient is from 2A to 3A
ΔVout: 1.5% of Vout (27mV) for worst case load transient
Vin, ripple 1.5% of Vin (240mV, p-p)
MODULE
VOUT
SENSE
GND
TRIM
RTUNE
CTUNE
RTrim
VIN
CO1
+
CI2 CI1
Vin+ Vout+
ON/OFF
Q3
CI1 10F/25V ceramic capacitor (e.g. Murata GRM31CR61E106KA12)
CI2 100μF/25V bulk electrolytic
CO1 4 x 47F/10V ceramic capacitor (e.g. Murata GRM32ER61A476KE20)
CTune 18nF/50V ceramic capacitor (can be 1206, 0805 or 0603 size)
RTune 75 ohms SMT resistor (can be 1206, 0805 or 0603 size)
RTrim 4.87kΩ SMT resistor (can be 1206, 0805 or 0603 size, recommended tolerance of 0.1%)
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 22
Mechanical Outline
Dimensions are in millimeters and (inches).
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)
PIN FUNCTION
1 ON/OFF
2 VIN
3 GND
4 VOUT
5 SENSE
6 TRIM
7 GND
8 NC
9 NC
10 PGOOD
NC
PIN 7 PIN 8
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 23
Recommended Pad Layout
Dimensions are in millimeters and (inches)
Tolerances: x.x mm ± 0.5 mm (x.xx in. ± 0.02 in.) [unless otherwise indicated]
x.xx mm ± 0.25 mm (x.xxx in ± 0.010 in.)
PIN FUNCTION
1 ON/OFF
2 VIN
3 GND
4 VOUT
5 SENSE
6 TRIM
7 GND
8 NC
9 NC
10 PGOOD
NC
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 24
Packaging Details
The 16V PicoTLynxTM 4A modules are supplied in tape & reel as standard. Modules are shipped in quantities of 400 modules per reel.
All Dimensions are in millimeters and (in inches).
Reel Dimensions:
Outside Dimensions: 330.2 mm (13.00)
Inside Dimensions: 177.8 mm (7.00”)
Tape Width: 24.00 mm (0.945”)
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
September 10, 2013 ©2013 General Electric Company. All rights reserved. Page 25
Surface Mount Information
Pick and Place
The 16V PicoTLynxTM 4A modules use an open frame
construction and are designed for a fully automated assembly
process. The modules are fitted with a label designed to
provide a large surface area for pick and place operations. The
label meets all the requirements for surface mount processing,
as well as safety standards, and is able to withstand reflow
temperatures of up to 300oC. The label also carries product
information such as product code, serial number and the
location of manufacture.
Nozzle Recommendations
The module weight has been kept to a minimum by using open
frame construction. Variables such as nozzle size, tip style,
vacuum pressure and placement speed should be considered
to optimize this process. The minimum recommended inside
nozzle diameter for reliable operation is 3mm. The maximum
nozzle outer diameter, which will safely fit within the allowable
component spacing, is 7 mm.
Bottom Side / First Side Assembly
This module is not recommended for assembly on the bottom
side of a customer board. If such an assembly is attempted,
components may fall off the module during the second reflow
process. If assembly on the bottom side is planned, please
contact Lineage Power for special manufacturing process
instructions.
Only ruggedized (-D version) modules with additional epoxy will
work with a customer’s first side assembly. For other versions,
first side assembly should be avoided
Lead Free Soldering
The 16V PicoTLynxTM 4A modules are lead-free (Pb-free) and
RoHS compliant and fully compatible in a Pb-free soldering
process. Failure to observe the instructions below may result in
the failure of or cause damage to the modules and can
adversely affect long-term reliability.
Pb-free Reflow Profile
Power Systems will comply with J-STD-020 Rev. C
(Moisture/Reflow Sensitivity Classification for Nonhermetic Solid
State Surface Mount Devices) for both Pb-free solder profiles
and MSL classification procedures. This standard provides a
recommended forced-air-convection reflow profile based on
the volume and thickness of the package (table 4-2). The
suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The
recommended linear reflow profile using Sn/Ag/Cu solder is
shown in Fig. 62. Soldering outside of the recommended profile
requires testing to verify results and performance. For
questions regarding Land grid array(LGA) soldering, solder
volume; please contact Lineage Power for special
manufacturing process instructions
MSL Rating
The 16V PicoTLynxTM 4A modules have a MSL rating of 2a.
Storage and Handling
The recommended storage environment and handling
procedures for moisture-sensitive surface mount packages is
detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and
Use of Moisture/Reflow Sensitive Surface Mount Devices).
Moisture barrier bags (MBB) with desiccant are required for MSL
ratings of 2 or greater. These sealed packages should not be
broken until time of use. Once the original package is broken,
the floor life of the product at conditions of ≤ 30°C and 60%
relative humidity varies according to the MSL rating (see J-STD-
033A). The shelf life for dry packed SMT packages will be a
minimum of 12 months from the bag seal date, when stored at
the following conditions: < 40° C, < 90% relative humidity.
Per J-STD-020 Rev. C
0
50
100
150
200
250
300
Reflow Time (Seconds)
Reflow Temp (°C)
Heating Zone
1°C/Second
Peak Temp 260°C
* Min. Time Above 235°C
15 Seconds
*Time Above 217°C
60 Seconds
Cooling
Zone
Figure
62. Recommended linear reflow profile using Sn/Ag/Cu
solder.
Post Solder Cleaning and Drying Considerations
Post solder cleaning is usually the final circuit-board assembly
process prior to electrical board testing. The result of
inadequate cleaning and drying can affect both the reliability of
a power module and the testability of the finished circuit-board
assembly. For guidance on appropriate soldering, cleaning and
drying procedures, refer to Board Mounted Power Modules:
Soldering and Cleaning Application Note (AN04-001).
GE Data Sheet
16V PicoTLynxTM 4A: Non-Isolated DC-DC Power Modules
8Vdc –16Vdc input; 0.6Vdc to 8.0Vdc output; 4A Output Current
Contact Us
For more information, call us at
USA/Canada:
+1 888 546 3243, or +1 972 244 9288
Asia-Pacific:
+86.021.54279977*808
Europe, Middle-East and Africa:
+49.89.74423-206
India:
+91.80.28411633
www.ge.com/powerelectronics
September 10, 2013 ©2013 General Electric Company. All rights reserved. Version 1.09
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 6. Device Codes
Device Code Input
Voltage Range
Output
Voltage
Output
Current
On/Off
Logic Sequencing Comcodes
APXK004A0X-SRZ 8.0 – 16Vdc 0.59 – 8.0Vdc 4A Negative No CC109146651
APXK004A0X4-SRZ 8.0 – 16Vdc 0.59 – 8.0Vdc 4A Positive No CC109146643
APXK004A0X-SRDZ 8.0 – 16Vdc 0.59 – 8.0Vdc 4A Negative No CC109158804
Table 7. Coding Scheme
TLynx
family
Sequencing
feature.
Input voltage
range
Output
current
O
utput voltage
On/Off logic Options ROHS Compliance
AP X K 004A0 X 4 -SR -D Z
X = w/o Seq. K = 8.0 - 16V 4.0A X =
programmable
output
4
= positive
N
o entry =
n
egative
S = Surface
Mount
R = Tape&Reel
D = 105C
operating
ambient, 40G
operating shock
as per MIL Std
810F
Z = ROHS6
