Data Sheet
21 March, 2006
QPW050/060 Series DC-DC Converter Power Modules:
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output; 50A/60A Output Current
* 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
Document No: DS03-075 ver 1.1
PDF name: qpw050-60a_series.ds.pdf
Applications
Distributed power architectures
Wireless Networks
Access and Optical Network Equipment
Enterprise Networks
Latest generation IC’s (DSP, FPGA, ASIC)
and Microprocessor powered applications
Options
Positive Remote On/Off logic
Case ground pin (-H Baseplate option)
Auto restart after fault shutdown
Basic Insulation Approved (-B suffix)
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 2002/95/EC with lead
solder exemption (non-Z versions)
Delivers up to 60A output current
Improved Thermal Performance: 30A at 70ºC at 1m/s
(200LFM) for 3.3Vo
High power density: 119W/in3
High efficiency – 93% at 3.3V full load
Low output voltage- supports migration to future IC
supply voltages down to 1.0V
Industry standard Quarter brick:
57.9 mm x 36.8 mm x 10.6 mm
(2.28 in x 1.45 in x 0.42 in)
Single tightly regulated output
2:1 input voltage range
Constant Switching frequency
Negative Remote On/Off logic
Output overcurrent/voltage/temperature protection
Output Voltage adjustment (±10%)
Wide operating temperature range (-40°C to 85°C)
Meets the voltage insulation requirements for
ETSI 300-132-2 and complies with and is licensed for
Basic Insulation rating per EN60950-1
CE mark meets 73/23/EEC and 93/68/EEC directives§
UL* 60950-1Recognized, CSA† C22.2 No. 60950-1-03
Certified, and VDE‡ 0805:2001-12 (EN60950-1)
Licensed
ISO** 9001 certified manufacturing facilities
Description
The QPW-series dc-dc converters are a new generation of DC/DC power modules designed for maximum efficiency
and power density. The QPW series provide up to 60A output current in an industry standard quarter brick. The
converter incorporates synchronous rectification technology and innovative packaging techniques to achieve ultra
high efficiency reaching 93% at 3.3V full load. The ultra high efficiency of this converter leads to lower power
dissipation such that for most applications a heat sink is not required. The QPW series power modules are isolated
dc-dc converters that operate over a wide input voltage range of 36 to 75 Vdc and provide single precisely regulated
output. The output is fully isolated from the input, allowing versatile polarity configurations and grounding
connections.
RoHS Compliant
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 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
Continuous VIN -0.3 80 Vdc
Transient (100ms) VIN, trans -0.3 100 Vdc
Operating Ambient Temperature All TA -40 85 °C
(see Thermal Considerations section)
Storage Temperature All Tstg -55 125 °C
I/O Isolation Voltage All 1500 Vdc
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 VIN 36 48 75 Vdc
Maximum Input Current IIN,max 6 Adc
(VIN=0V to 60V, IO=IO, max)
Inrush Transient All I2t 1 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12µH source impedance; VIN=0V to
75V, IO= IOmax ; see Figure 31)
All 7 mAp-p
Input Ripple Rejection (120Hz) All 50 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 a 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 15A (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.
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 3
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set-point
(VIN=VIN,nom, IO=IO, max, Tc =25°C)
3.3V
2.5V
1.8V
1.5V
1.2V
VO, set
3.24
2.45
1.77
1.47
1.18
3.30
2.25
1.80
1.50
1.20
3.36
2.55
1.83
1.53
1.22
Vdc
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
3.3V
2.5V
1.8V
1.5V
1.2V
VO
3.20
2.42
1.74
1.44
1.15
3.40
2.57
1.86
1.56
1.25
Vdc
Output Regulation
Line (VIN=VIN, min to VIN, max) All
0.05 0.2 %Vo
Load (IO=IO, min to IO, max) All
0.05 0.2 %Vo
Temperature (Tc = -40ºC to +85ºC) All 15 50 mV
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max)
RMS (5Hz to 20MHz bandwidth) All 30 mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth) All 100 mVpk-pk
External Capacitance All CO, max µF
Output Current 3.3V Io 0 50 Adc
2.5V –
1.2V Io 0 60 Adc
Output Current Limit Inception 3.3V IO, lim 58 Adc
2.5V –
1.2V IO, lim 69 Adc
Output Short-Circuit Current IO, s/c A rms
(VO250mV) ( Hiccup Mode ) IO, s/c A rms
Efficiency
VIN=VIN, nom, Tc=25°C
IO=IO, max , VO= VO,set
3.3V
2.5V
1.8V
1.5V
1.2V
__
__
__
__
93
91
89
87
85
__
__
__
__
%
%
%
%
%
Switching Frequency fsw 300 kHz
Dynamic Load Response
(∆Io/∆t=1A/10µs; Vin=Vin,nom; Tc=25°C; Tested
with a 10 µF aluminum and a 1.0 µF ceramic
capacitor across the load.)
Load Change from Io= 50% to 75% of Io,max:
Peak Deviation
Settling Time (Vo<10% peak deviation)
All Vpk
ts
__
4
200
__
%VO, set
µs
Load Change from Io= 75% to 50% of Io,max:
Peak Deviation V
pk __ 4 __ %VO, set
Settling Time (Vo<10% peak deviation) ts 200 µs
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 4
Isolation Specifications
Parameter Symbol Min Typ Max Unit
Isolation Capacitance Ciso 2700 pF
Isolation Resistance Riso 10 M
General Specifications
Parameter Device Min Typ Max Unit
Calculated MTBF (IO=80% of IO, max, Tc =40°C,
airflow=1m/s(200LFM)) All
1,204,000 Hours
Weight 42 (1.48) g (oz.)
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 5
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
Remote On/Off Signal Interface
(VIN=VIN, min to VIN, max ; open collector or equivalent,
Signal referenced to VIN- terminal)
Negative Logic: device code suffix “1”
Logic Low = module On, Logic High = module Off
Positive Logic: No device code suffix required
Logic Low = module Off, Logic High = module On
Logic Low Specification
Remote On/Off Current – Logic Low All Ion/off 0.15 1.0 mA
On/Off Voltage:
Logic Low All Von/off 0.0 1.2 V
Logic High – (Typ = Open Collector) All Von/off __ 15 V
Logic High maximum allowable leakage current All Ion/off 50 µA
Turn-On Delay and Rise Times
(IO=IO, max)
Tdelay 2.5 ms
3.3V Trise 12 ms
Tdelay = Time until VO = 10% of VO,set from either
application of Vin with Remote On/Off set to On or
operation of Remote On/Off from Off to On with Vin
already applied for at least one second.
Tdelay 2.5 ms
Trise = time for VO to rise from 10% of VO,set to 90%
of VO,set.
2.5V – 1.2V
Trise 1.5 ms
Output Voltage Adjustment
(See Feature Descriptions):
Output Voltage Remote-sense Range
Output Voltage Set-point Adjustment Range (trim)
Vsense
__
90
__
__
10
110
%Vo,nom
%Vo,nom
Output Overvoltage Protection 3.3V VO, limit 4.0 4.9 V
2.5V
3.0 3.4 V
1.8V
2.1 2.4 V
1.5V
1.8 2.2 V
1.2V
1.5 1.8 V
Overtemperature Protection All Tref 110 °C
(See Feature Descriptions)
Input Undervoltage Lockout VIN, UVLO
Turn-on Threshold R 34.5 36 V
Turn-off Threshold R 30 32
V
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 6
Characteristic Curves
The following figures provide typical characteristics for the QPW050A0F (3.3V, 50A) at 25ºC. The figures are identical
for either positive or negative Remote On/Off logic.
INPUT CURRENT, Ii (A)
INPUT VOLTAGE, VO (V)
OUTPUT VOLTAGE, On/Off VOLTAGE
VO (V) (5V/div) VON/OFF(V) (2V/div)
TIME, t (5 ms/div)
Figure 1. Typical Input Characteristic at Room
Temperature.
Figure 4. Typical Start-Up Using Remote On/Off,
negative logic version shown.
EFFCIENCY, (%)
OUTPUT CURRENT, IO (A)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (100mV/div)
TIME, t (100 µs/div)
Figure 2. Typical Converter Efficiency Vs. Output
current at Room Temperature.
Figure 5. Typical Transient Response to Step
change in Load from 50% to 25% of
Full Load at Room Temperature and 48
Vdc Input.
OUTPUT VOLTAGE,
VO (V) (50mV/div)
TIME, t (1µs/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (100mV/div)
TIME, t (100 µs/div)
Figure 3. Typical Output Ripple and Noise at Room
Temperature and Io = Io, max.
Figure 6. Typical Transient Response to Step change
in Load from 50% to 75% of Full Load at Room
Temperature and 48 Vdc Input.
36 Vin
48 Vin
75 Vin
0
1
2
3
4
5
6
25 35 45 55 65 75
Io = 0 A
Io = 25 A
Io = 50 A
80
82
84
86
88
90
92
94
0 1020304050
Vi = 36 V
Vi = 48 V
Vi = 75 V
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 7
Characteristic Curves
The following figures provide typical characteristics for the QPW060A0G (2.5V, 60A) at 25ºC. The figures are
identical for either positive or negative Remote On/Off logic.
INPUT CURRENT, Ii (A)
INPUT VOLTAGE, VO (V)
OUTPUT VOLTAGE, On/Off VOLTAGE
VO (V) (5V/div) VON/OFF(V) (1V/div)
TIME, t (2.5 ms/div)
Figure 7. Typical Input Characteristic at Room
Temperature.
Figure 10. Typical Start-Up Using Remote On/Off,
negative logic version shown.
EFFCIENCY, (%)
OUTPUT CURRENT, IO (A)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (50mV/div)
TIME, t (500 µs/div)
Figure 8. Typical Converter Efficiency Vs. Output
current at Room Temperature.
Figure 11. Typical Transient Response to Step
change in Load from 50% to 25%of Full Load at
Room Temperature and 48 Vdc Input.
OUTPUT VOLTAGE,
VO (V) (50mV/div)
TIME, t (2.5µs/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (50mV/div)
TIME, t (500 µs/div)
Figure 9. Typical Output Ripple and Noise at Room
Temperature and Io = Io, max.
Figure 12. Typical Transient Response to Step change
in Load from 50% to 75% of Full Load at Room
Temperature and 48 Vdc Input.
36 Vin
48 Vin
75 Vin
0
1
2
3
4
5
6
25 35 45 55 65 75
Io = 60A
Io = 0 A
Io = 30 A
84
86
88
90
92
94
5 1015202530354045505560
Vi = 36 V
Vi = 48 V
Vi = 75 V
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 8
Characteristic Curves
The following figures provide typical characteristics for the QPW060A0Y (1.8V, 60A) at 25ºC. The figures are
identical for either positive or negative Remote On/Off logic.
INPUT CURRENT, Ii (A)
INPUT VOLTAGE, VO (V)
OUTPUT VOLTAGE On/Off VOLTAGE
VO (V) (5V/div) VON/OFF(V) (0.5V/div)
TIME, t (2.5 ms/div)
Figure 13. Typical Input Characteristic at Room
Temperature.
Figure 16. Typical Start-Up Using Remote On/Off,
negative logic version shown.
EFFCIENCY, (%)
OUTPUT CURRENT, IO (A)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (50mV/div)
TIME, t (500 µs/div)
Figure 14. Typical Converter Efficiency Vs. Output
current at Room Temperature.
Figure 17. Typical Transient Response to Step
change in Load from 50% to 25%of Full Load at
Room Temperature and 48 Vdc Input.
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (2.5µs/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (50mV/div)
TIME, t (500 µs/div)
Figure 15. Typical Output Ripple and Noise at Room
Temperature and Io = Io, max.
Figure 18. Typical Transient Response to Step change
in Load from 50% to 75% of Full Load at Room
Temperature and 48 Vdc Input.
36 Vin
48 Vin
75 Vin
0
0.5
1
1.5
2
2.5
3
3.5
4
25 35 45 55 65 75
Io = 0 A
Io = 30 A
Io = 60 A
81
83
85
87
89
91
5 1015202530354045505560
Vi = 36 V
Vi = 48 V
Vi = 75 V
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 9
Characteristic Curves
The following figures provide typical characteristics for the QPW060A0M (1.5V, 60A) at 25ºC. The figures are
identical for either positive or negative Remote On/Off logic.
INPUT CURRENT, Ii (A)
INPUT VOLTAGE, VO (V)
OUTPUT VOLTAGE On/Off VOLTAGE
VO (V) (5V/div) VON/OFF(V) (0.5V/div)
TIME, t (2.5 ms/div)
Figure 19. Typical Input Characteristic at Room
Temperature.
Figure 22. Typical Start-Up Using Remote On/Off,
negative logic version shown.
EFFCIENCY, (%)
OUTPUT CURRENT, IO (A)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (50mV/div)
TIME, t (500 µs/div)
Figure 20. Typical Converter Efficiency Vs. Output
current at Room Temperature.
Figure 23. Typical Transient Response to Step
change in Load from 50% to 25%of Full Load at
Room Temperature and 48 Vdc Input.
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (2.5µs/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (50mV/div)
TIME, t (500 µs/div)
Figure 21. Typical Output Ripple and Noise at Room
Temperature and Io = Io, max.
Figure 24. Typical Transient Response to Step change
in Load from 50% to 75% of Full Load at Room
Temperature and 48 Vdc Input.
36 Vin
48 Vin
75 Vin
0
0.5
1
1.5
2
2.5
3
3.5
25 35 45 55 65 75
Io = 0 A
Io = 30 A
Io = 60 A
81
83
85
87
89
91
5 1015202530354045505560
Vi = 36 V
Vi = 75 V
Vi = 48 V
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 10
Characteristic Curves
The following figures provide typical characteristics for the QPW060A0P (1.2V, 60A) at 25ºC. The figures are
identical for either positive or negative Remote On/Off logic.
INPUT CURRENT, Ii (A)
INPUT VOLTAGE, VO (V)
OUTPUT VOLTAGE On/Off VOLTAGE
VO (V) (5V/div) VON/OFF(V) (0.5V/div)
TIME, t (2.5 ms/div)
Figure 25. Typical Input Characteristic at Room
Temperature.
Figure 28. Typical Start-Up Using Remote On/Off,
negative logic version shown.
EFFCIENCY, (%)
OUTPUT CURRENT, IO (A)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (50mV/div)
TIME, t (500 µs/div)
Figure 26. Typical Converter Efficiency Vs. Output
current at Room Temperature.
Figure 29. Typical Transient Response to Step
change in Load from 50% to 25%of Full Load at
Room Temperature and 48 Vdc Input.
OUTPUT VOLTAGE,
VO (V) (20mV/div)
TIME, t (2.5µs/div)
OUTPUT CURRENT, OUTPUT VOLTAGE
IO (A) (10A/div) VO (V) (50mV/div)
TIME, t (500 µs/div)
Figure 27. Typical Output Ripple and Noise at Room
Temperature and Io = Io, max.
Figure 30. Typical Transient Response to Step change
in Load from 50% to 75% of Full Load at Room
Temperature and 48 Vdc Input.
36 Vin
48 Vin
75 Vin
0
0.5
1
1.5
2
2.5
3
25 35 45 55 65 75
Io = 0 A
Io = 30 A
Io = 60 A
80
81
82
83
84
85
86
87
88
89
90
5 1015202530354045505560
Vi = 36 V
Vi = 48 V
Vi = 75 V
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 11
Test Configurations
Note: Measure input reflected-ripple current with a simulated
source inductance (LTEST) of 12 µH. Capacitor CS offsets
possible battery impedance. Measure current as shown
above.
Figure 31. Input Reflected Ripple Current Test
Setup.
Note: Use a 1.0 µF ceramic capacitor and a 10 µF aluminum
or tantalum capacitor. Scope measurement should be made
using a BNC socket. Position the load between 51 mm and
76 mm (2 in. and 3 in.) from the module.
Figure 32. Output Ripple and Noise Test Setup.
LOAD
CONTACT AND
SUPPLY
I
I
CONTACT
V
I
(+)
V
I
(–)
V
O1
DISTRIBUTION LOSSES
RESISTANCE
I
O
V
O2
Note: All measurements are taken at the module terminals.
When socketing, place Kelvin connections at module
terminals to avoid measurement errors due to socket contact
resistance.
Figure 33. Output Voltage and Efficiency Test
Setup.
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance source. A highly inductive source
impedance can affect the stability of the power
module. For the test configuration in Figure 31, a
100µF electrolytic capacitor (ESR<0.7Ω at 100kHz),
mounted close to the power module helps ensure the
stability of the unit. Consult the factory for further
application guidelines.
Output Capacitance
High output current transient rate of change (high
di/dt) loads may require high values of output
capacitance to supply the instantaneous energy
requirement to the load. To minimize the output
voltage transient drop during this transient, low E.S.R.
(equivalent series resistance) capacitors may be
required, since a high E.S.R. will produce a
correspondingly higher voltage drop during the
current transient.
Output capacitance and load impedance interact with
the power module’s output voltage regulation control
system and may produce an ’unstable’ output
condition for the required values of capacitance and
E.S.R.. Minimum and maximum values of output
capacitance and of the capacitor’s associated E.S.R.
may be dictated, depending on the module’s control
system.
The process of determining the acceptable values of
capacitance and E.S.R. is complex and is load-
dependant. Tyco provides Web-based tools to assist
the power module end-user in appraising and
adjusting the effect of various load conditions and
output capacitances on specific power modules for
various load conditions.
Safety Considerations
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and
separation requirements of the end-use safety agency
standard, i.e., UL 60950-1-3, CSA C22.2 No. 60950-
00, and VDE 0805:2001-12 (IEC60950-1).
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements.
If the input source is non-SELV (ELV or a hazardous
voltage greater than 60 Vdc and less than or equal to
75Vdc), for the module’s output to be considered as
meeting the requirements for safety extra-low voltage
(SELV), all of the following must be true:
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 12
Safety Considerations (continued)
The input source is to be provided with reinforced
insulation from any other hazardous voltages,
including the ac mains.
One VIN pin and one VOUT pin are to be
grounded, or both the input and output pins are
to be kept floating.
The input pins of the module are not operator
accessible.
Another SELV reliability test is conducted on the
whole system (combination of supply source and
subject module), as required by the safety
agencies, to verify that under a single fault,
hazardous voltages do not appear at the
module’s output.
Note: Do not ground either of the input pins of the
module without grounding one of the output
pins. This may allow a non-SELV voltage to
appear between the output pins and ground.
The power module has extra-low voltage (ELV)
outputs when all inputs are ELV.
For input voltages exceeding –60 Vdc but less than or
equal to –75 Vdc, these converters have been
evaluated to the applicable requirements of BASIC
INSULATION between secondary DC MAINS
DISTRIBUTION input (classified as TNV-2 in Europe)
and unearthed SELV outputs (-B option only).
The input to these units is to be provided with a
maximum 15A fast-acting (or time-delay) fuse in the
unearthed lead.
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 13
Feature Descriptions
Overcurrent Protection
To provide protection in a fault output overload
condition, the module is equipped with internal
current-limiting circuitry and can endure current limit
for few seconds. If overcurrent persists for few
seconds, the module will shut down and remain latch-
off. The overcurrent latch is reset by either cycling the
input power or by toggling the on/off pin for one
second. If the output overload condition still exists
when the module restarts, it will shut down again. This
operation will continue indefinitely until the
overcurrent condition is corrected.
An auto-restart option is also available.
Remote On/Off
Two remote on/off options are available. Positive logic
remote on/off turns the module on during a logic-high
voltage on the ON/OFF pin, and off during a logic low.
Negative logic remote on/off turns the module off
during a logic high and on during a logic low. Negative
logic, device code suffix "1," is the factory-preferred
configuration. To turn the power module on and off,
the user must supply a switch to control the voltage
between the on/off terminal and the VI (-) terminal
(Von/off). The switch can be an open collector or
equivalent (see Figure 34). A logic low is Von/off = 0
V to I.2 V. The maximum Ion/off during a logic low is 1
mA. The switch should maintain a logic-low voltage
while sinking 1 mA. During a logic high, the maximum
Von/off generated by the power module is 15 V. The
maximum allowable leakage current of the switch at
Von/off = 15V is 50 µA. If not using the remote on/off
feature, perform one of the following to turn the unit
on:
For negative logic, short ON/OFF pin to VI(-).
For positive logic: leave ON/OFF pin open.
Figure 34. Remote On/Off Implementation.
Remote Sense
Remote sense minimizes the effects of distribution
losses by regulating the voltage at the remote-sense
connections. The voltage between the remote-sense
pins and the output terminals must not exceed the
output voltage sense range given in the Feature
Specifications table i.e.:
[Vo(+) – Vo(-)] – [SENSE(+) – SENSE(-)] ≤ 10% of
Vo,nom.
The voltage between the Vo(+) and Vo(-) terminals
must not exceed the minimum output overvoltage
shut-down value indicated in the Feature
Specifications table. This limit includes any increase
in voltage due to remote-sense compensation and
output voltage set-point adjustment (trim). See Figure
35. If not using the remote-sense feature to regulate
the output at the point of load, then connect
SENSE(+) to Vo(+) and SENSE(-) to Vo(-) at the
module.
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum increase is the larger of either the
remote sense or the trim. The amount of power
delivered by the module is defined as the voltage at
the output terminals multiplied by the output current.
When using remote sense and trim: the output
voltage of the module can be increased, which at the
same output current would increase the power output
of the module. Care should be taken to ensure that
the maximum output power of the module remains at
or below the maximum rated power.
Figure 35. Effective Circuit Configuration for
Single-Module Remote-Sense Operation Output
Voltage.
Output Voltage Set-Point Adjustment (Trim)
Trimming allows the user to increase or decrease the
output voltage set point of a module. This is
accomplished by connecting an external resistor
between the TRIM pin and either the SENSE(+) or
SENSE(-) pins. The trim resistor should be positioned
close to the module.
If not using the trim feature, leave the TRIM pin open.
With an external resistor between the TRIM and
SENSE(-) pins (Radj-down), the output voltage set
point (Vo,adj) decreases (see Figure 36). The
following equation determines the required external-
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 14
Feature Description (continued)
Output Voltage Set-Point Adjustment (Trim)
resistor value to obtain a percentage output voltage
change of ∆%.
For output voltages: 1.5V – 3.3V
Ω
−
∆
=−KR downadj 2.10
%
510
For output voltage: 1.2V
Ω
−
∆
=−KR downadj 49.33
%
1.1299
Where,
100%
,
,×
−
=∆
nomo
desirednomo
V
VV
Vdesired = Desired output voltage set point (V).
With an external resistor connected between the
TRIM and SENSE(+) pins (Radj-up), the output
voltage set point (Vo,adj) increases (see Figure 37).
The following equation determines the required
external-resistor value to obtain a percentage output
voltage change of ∆%.
For output voltages: 1.5V – 3.3V
()
Ω
−
∆
−
∆
∆+
=
−K
V
Rnomo
upadj 2.10
%
510
%*225.1
%100**1.5 ,
For output voltage: 1.2V
()
Ω
−
∆
−
∆
∆+
=−K
V
Rnomo
upadj 49.33
%
1.1299
%*6.0
%100**769.9 ,
Where,
100%
,
,×
−
=∆
nomo
nomodesired
V
VV
Vdesired = Desired output voltage set point (V).
The voltage between the Vo(+) and Vo(-) terminals
must not exceed the minimum output overvoltage
shut-down value indicated in the Feature
Specifications table. This limit includes any increase
in voltage due to remote-sense compensation and
output voltage set-point adjustment (trim). See Figure
35.
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum increase is the larger of either the
remote sense or the trim.
The amount of power delivered by the module is
defined as the voltage at the output terminals
multiplied by the output current. When using remote
sense and trim, the output voltage of the module can
be increased, which at the same output current would
increase the power output of the module. Care should
be taken to ensure that the maximum output power of
the module remains at or below the maximum rated
power.
Figure 36. Circuit Configuration to Decrease
Output Voltage .
Figure 37. Circuit Configuration to Increase
Output Voltage.
Examples:
To trim down the output of a nominal 3.3V
module (QPW050A0F) to 3.1V
100
3.3
1.33.3
%×
−
=∆ V
VV
% = 6.06
Ω
−=−KR downadj 2.10
06.6
510
Radj-down = 73.96 kΩ
To trim up the output of a nominal 3.3V module
(QPW050A0F) to 3.6V
100
3.3
3.36.3
%×
−
=∆ V
VV
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 15
Feature Description (continued)
Output Voltage Set-Point Adjustment (Trim)
% = 9.1
100
28
6.2928
%×
−
=∆ V
VV
% = 5
Ω
+
×=−KR upadj 936
5
1036
10
Rtadj-up = 11432 k
()
Ω
−−
+
=−KR upadj 2.10
1.9
510
1.9*225.1
1.9100*3.3*1.5
Rtadj-up = 98.47kΩ
Output Over Voltage Protection
The output overvoltage protection consists of circuitry
that monitors the voltage on the output terminals. If
the voltage on the output terminals exceeds the over
voltage protection threshold, then the module will
shutdown and latch off. The overvoltage latch is reset
by either cycling the input power for one second or by
toggling the on/off signal for one second. The
protection mechanism is such that the unit can
continue in this condition until the fault is cleared.
Over Temperature Protection
These modules feature an overtemperature protection
circuit to safeguard against thermal damage. The
circuit shuts down and latches off the module when
the maximum device reference temperature is
exceeded. The module can be restarted by cycling
the dc input power for at least one second or by
toggling the remote on/off signal for at least one
second.
Input Under/Over Voltage 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.
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 16
Thermal Considerations
The power modules operate in a variety of thermal
environments; however, sufficient cooling should 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.
Heat-dissipating components are mounted on the top
side of the module. Heat is removed by conduction,
convection and radiation to the surrounding
environment. Proper cooling can be verified by
measuring the thermal reference temperature (Tref ).
Peak temperature (Tref ) occurs at the position
indicated in Figures 38 - 40. For reliable operation this
temperature should not exceed listed temperature
threshold.
Figure 38. Tref Temperature Measurement
Location for Vo=3.3V – 2.5V.
Figure 39. Tref Temperature Measurement
Location for Vo=1.8V.
Figure 40. Tref Temperature Measurement
Location for Vo= 1.5V – 1.2V
The output power of the module should not exceed
the rated power for the module as listed in the
Ordering Information table.
Although the maximum Tref temperature of the power
modules is 110 °C - 115 °C, you can limit this
temperature to a lower value for extremely high
reliability.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Following derating figures
shows the maximum output current that can be
delivered by each module in the respective orientation
without exceeding the maximum Tref temperature
versus local ambient temperature (TA) for natural
convection through 2m/s (400 ft./min).
Note that the natural convection condition was
measured at 0.05 m/s to 0.1 m/s (10ft./min. to 20
ft./min.); however, systems in which these power
modules may be used typically generate natural
convection airflow rates of 0.3 m/s (60 ft./min.) due to
other heat dissipating components in the system. The
use of Figures 41 - 50 are shown in the following
example:
Example
What is the minimum airflow necessary for a
QPW050A0F operating at VI = 48 V, an output
current of 30A, and a maximum ambient temperature
of 70 °C in longitudinal orientation.
Solution:
Given: VI = 48V
Io = 30A
TA = 70 °C
Tref =110ºC
Tref =115ºC
Tref = 115ºC
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 17
Determine airflow (V) (Use Figure 41):
V = 1m/sec. (200ft./min.)
The following figures provide thermal derating characteristics.
0
5
10
15
20
25
30
35
40
45
50
25 30 35 40 45 50 55 60 65 70 75 80 85
NATURAL CONVECTION
1.0 m/s (200 ft./min.)
2.0 m/s (400 ft./min.)
0
10
20
30
40
50
60
25 30 35 40 45 50 55 60 65 70 75 80 85
NATURAL
CONVECTION
1.0 m/s (200 ft./min.)
2.0 m/s
(
400 ft./min.
)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
Figure 41. Output Power Derating for QPW050A0F (Vo
= 3.3V) in Longitudinal Orientation with no baseplate;
Airflow Direction From Vin(–) to Vout(--); Vin = 48V.
Figure 44. Output Power Derating for QPW060A0G (Vo
= 2.5V) in Transverse Orientation with no baseplate;
Airflow Direction From Vin(–) to Vin(+); Vin = 48V.
0
10
20
30
40
50
25 30 35 40 45 50 55 60 65 70 75 80 8
5
NATURAL CONVECTION
1.0 m/s (200 ft./min.)
2.0 m/s (400 ft./min.)
0
10
20
30
40
50
60
25 30 35 40 45 50 55 60 65 70 75 80 85
NATURAL
CONVECTION
1.0 m/s
(
200 ft./min.
)
2.0 m/s (400 ft./min.)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
Figure 42. Output Power Derating for QPW050A0F (Vo
= 3.3V) in Transverse Orientation with no baseplate;
Airflow Direction From Vin(–) to Vin(+); Vin = 48V.
Figure 45. Output Power Derating for QPW060A0Y (Vo
= 1.8V) in Longitudinal Orientation with no baseplate;
Airflow Direction From Vin(–) to Vout(--); Vin = 48V.
0
10
20
30
40
50
60
25 30 35 40 45 50 55 60 65 70 75 80 85
NATURAL
CONVECTION
1.0 m/s (200 ft/min)
2.0 m/s (400 ft/min)
0
10
20
30
40
50
60
25 30 35 40 45 50 55 60 65 70 75 80 8
5
NATURAL
CONVECTION
1.0 m/s (200 ft./min.)
2.0 m/s (400 ft./min.)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
Figure 43. Output Power Derating for QPW060A0G (Vo
= 2.5V) in Longitudinal Orientation with no baseplate;
Airflow Direction From Vin(–) to Vout(--); Vin = 48V.
Figure 46. Output Power Derating for QPW060A0Y (Vo
= 1.8V) in Transverse Orientation with no baseplate;
Airflow Direction From Vin(–) to Vin(+); Vin = 48V.
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 18
The following figures provide thermal derating characteristics.
0
10
20
30
40
50
60
25 30 35 40 45 50 55 60 65 70 75 80 85
NATURAL
CONVECTION
1.0 m/s (200 ft./min.)
2.0 m/s (400 ft./min.)
0
10
20
30
40
50
60
25 30 35 40 45 50 55 60 65 70 75 80 85
NATURAL CONVECTION
1.0 m/s (200 ft./min.)
2.0 m/s (400 ft./min.)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
Figure 47. Output Power Derating for QPW060A0M (Vo
= 1.5V) in Longitudinal Orientation with no baseplate;
Airflow Direction From Vin(–) to Vout(--); Vin = 48V.
Figure 50. Output Power Derating for QPW060A0P (Vo
= 1.2V) in Transverse Orientation with no baseplate;
Airflow Direction From Vin(–) to Vin(+); Vin = 48V.
0
10
20
30
40
50
60
25 30 35 40 45 50 55 60 65 70 75 80 85
NATURAL CONVECTION
1.0 m/s (200 ft./min.)
2.0 m/s (400 ft./min.)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
Figure 48. Output Power Derating for QPW060A0M (Vo
= 1.5V) in Transverse Orientation with no baseplate;
Airflow Direction From Vin(–) to Vin(+); Vin = 48V.
0
10
20
30
40
50
60
25 30 35 40 45 50 55 60 65 70 75 80 85
NATURAL CONVECTION
1.0 m/s (200 ft./min.)
2.0 m/s (400 ft./min.)
OUTPUT CURRENT, IO (A)
LOCAL AMBIENT TEMPERATURE, TA (°C)
Figure 49. Output Power Derating for QPW060A0P (Vo
= 1.2V) in Longitudinal Orientation with no baseplate;
Airflow Direction From Vin(–) to Vout(--); Vin = 48V.
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 19
Layout Considerations
The QPW power module series are low profile in
order to be used in fine pitch system card
architectures. As such, component clearance
between the bottom of the power module and the
mounting board is limited. Avoid placing copper areas
on the outer layer directly underneath the power
module. Also avoid placing via interconnects
underneath the power module.
For additional layout guide-lines, refer to
FLTR100V10 data sheet.
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 Tyco Electronics Board
Mounted Power Modules: Soldering and Cleaning
Application Note.
Through-Hole Lead-Free Soldering
Information
The RoHS-compliant through-hole products use the
SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant
components. They are designed to be processed
through single or dual wave soldering machines. The
pins have an RoHS-compliant finish that is compatible
with both Pb and Pb-free wave soldering processes.
A maximum preheat rate of 3°C/s is suggested. The
wave preheat process should be such that the
temperature of the power module board is kept below
210°C. For Pb solder, the recommended pot
temperature is 260°C, while the Pb-free solder pot is
270°C max. Not all RoHS-compliant through-hole
products can be processed with paste-through-hole
Pb or Pb-free reflow process. If additional information
is needed, please consult with your Tyco Electronics
Power System representative for more details.
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 20
Mechanical Outline for Through-Hole Module
Dimensions are in inches and (millimeters).
Tolerances: x.xx in. ± 0.02 in. (x.x mm ± 0.5 mm) [unless otherwise indicated]
x.xxx in ± 0.010 in. (x.xx mm ± 0.25 mm)
TOP VIEW
SIDE VIEW
BOTTOM
VIEW
*Side label includes Tyco name, product designation, and data code.
Option Feature, Pin is not present unless one these options specified
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
Tyco Electronics Power Systems 21
Recommended Pad Layout for Through Hole Module
Dimensions are in inches and (millimeters).
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.)
Data Sheet
21 March, 2006
QPW050/060 Series Power Modules; DC-DC converters
36-75Vdc Input; 1.2Vdc to 3.3Vdc Output
World Wide Headquarters
Tyco Electronics Power Systems, Inc.
3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-843-7497
(Outside U.S.A.: +1-972-284-2626)
www.power.tycoelectronics.com
e-mail: techsupport1@tycoelectronics.com
Europe, Middle-East and Africa Headquarters
Tyco Electronics (UK) Ltd
Tel: +44 (0) 1344 469 300
Latin America, Brazil, Caribbean Headquarters
Tyco Electronics Power Systems
Tel: +56 2 209 8211
India Headquarters
Tyco Electronics Systems India Pte. Ltd.
Tel: +91 80 841 1633 x3001
Asia-Pacific Headquarters
Tyco Electronics Singapore Pte. Ltd.
Tel: +65 6416 4283
Tyco Electronics Corporation reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their
use or application. No rights under any patent accompany the sale of any such product(s) or information.
© 2003 Tyco Electronics Power Systems, Inc., (Mesquite, Texas) All International Rights Reserved.
Document No: DS03-075 ver 1.1
PDF name: qpw050-60a_series.ds.pdf
Ordering Information
Please contact your Tyco Electronics’ Sales Representative for pricing, availability and optional features.
Table 1. Device Code
Product codes Input Voltage Output
Voltage
Output
Current Efficiency Connector
Type Comcodes
QPW050A0F1 48V (36-75Vdc) 3.3V 50A 93% Through hole 108968686
QPW060A0G1 48V (36-75Vdc) 2.5V 60A 91% Through hole 108982232
QPW060A0Y1 48V (36-75Vdc) 1.8V 60A 89% Through hole 108982265
QPW060A0M1 48V (36-75Vdc) 1.5V 60A 87% Through hole 108982240
QPW060A0P1 48V (36-75Vdc) 1.2V 60A 85% Through hole 108982257
QPW050A0F1-HZ 48V (36-75Vdc) 3.3V 50A 93% Through hole CC109107182
QPW060A0G1Z 48V (36-75Vdc) 2.5V 60A 91% Through hole CC109107216
QPW060A0M641Z 48V (36-75Vdc) 1.5V 60A 87% Through hole CC109105021
QPW060A0P641Z 48V (36-75Vdc) 1.2V 60A 85% Through hole CC109101466
Table 2. Device Options
Option Suffix
Negative remote on/off logic 1
Auto-restart 4
Pin Length: 3.68 mm ± 0.25mm
(0.145 in. ± 0.010 in.)
6
Base Plate option -H
Basic Insulation -B
RoHS Compliant -Z
