Data Sheet
August 12, 2010
EQD075 Series (Eighth- Brick)DC-DC Converter Power Modules
18- 60Vdc Input; 3.3 to 5.0Vdc Output; 75W
* 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: DS05-031 ver. 1.31
PDF name: EQD075A.pdf
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)
High efficiency – 92% at 5.0Vo, full load, 24Vin
Industry standard Eighth brick footprint and pin out
57.9 mm x 22.8 mm x 8.5 mm
(2.28 in. x 0.90 in. x 0.335 in.)
3:1 Input voltage range: 18 - 60 Vdc
Input under/overvoltage protection
Output overcurrent/voltage protection
Over-temperature protection
Tightly regulated output
Remote sense
No reverse current during output shutdown
Negative logic, Remote On/Off
Output voltage programmable from 3.0 Vdc to
5.5Vdc
Input-to-output isolation (Basic Insulation: 1500V)
Wide operating temperature range (-40°C to 85°C)
Meets conducted emissions requirements of
FCC/EN55022 Class A without external filter
Within FCC and VDE Class A Radiated Limits
UL* 60950-1Recognized, CSA† C22.2 No. 60950-1-
03 Certified, and VDE‡ 0805:2001-12 (EN60950-1)
Licensed
Meets the voltage and current requirements for ETSI
300-132-2 and complies with and licensed for Basic
insulation rating per EN60950-1
ISO** 9001 and ISO 14001 certified manufacturing
facilities
Applications
Distributed power architectures
Wireless Networks
Optical and Access Network Equipment
Enterprise Networks
Options
Positive logic, Remote On/Off
Auto restart after fault protection shutdown
Pin length
Description
The EQD075 series DC-DC converters are a new generation of open-frame DC/DC power modules designed to
support a 3:1 input voltage range, that allows operation in both 24V or 48V nominal input voltage systems, thus
eliminating the need for separate power modules for each input voltage range. These single output DC-DC
converters operate over an input voltage range of 18 to 60 Vdc. The series is also designed to provide a wide output
voltage set/trim range of 3.0 to 5.5Vdc, with output current up to 20A at 3.3Vdc or 15A at 5.0Vdc in an industry
standard eighth brick package. The output is isolated from the input, allowing versatile polarity configurations and
grounding connections. Built in filtering for both input and output minimizes the need for external filtering.
RoHS Compliant
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
LINEAGE POWER 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 A VIN -0.3 60 Vdc
Transient (100 ms) VIN, trans -0.3 75 Vdc
Operating Ambient Temperature A TA -40 85 °C
(see Thermal Considerations section)
Storage Temperature A Tstg -55 125 °C
I/O Isolation (100% factory Hi-Pot tested)
Input - Output A 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 A VIN 18 24/48 60 Vdc
Maximum Input Current
(VIN=0 to VIN, max , Vo = Vo,set, IO=IO, max ) A IIN,max 6
Adc
Input Stand-by Current
Module on / off disabled (VIN = VIN, nom, Vo = 0 V) A IIN, Stby 25
mA
Input No Load Current
Module on / off enabled (VIN = VIN, nom, Io = 0 A) A IIN, NL 110
mA
Inrush Transient A I2t 1 A2s
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12H source impedance;
Ta 25oC, Cin = 33F)
A 30 mAp-p
Input Ripple Rejection (100 - 120Hz) A 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 being
part of a complex 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 very
fast acting surface mount fuse with a maximum rating of 6.3 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.
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
LINEAGE POWER 3
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Output Voltage Set-point A VO, set -1.6 +1.6 % VO, set
(VIN = VIN, min=24/48, IO =IO, max, TA =25°C)
Output Voltage A VO -3 - +3 % VO
(Over all line, load, and
Temp Conditions Until end of life)
Output Regulation
Line (VIN = VIN, min to VIN, max) A
0.05 0.2 % VO, nom
Load (IO = IO, min to IO, max) A
0.05 0.2 % VO, nom
Temperature (Tref =TA, min to TA, max) A
0.25 1 % VO, nom
Output Ripple and Noise on nominal output
(VIN =VIN, nom and IO = IO, min to IO, max,
Cout = 1F ceramic // 10F Tantalum capacitor)
3.3 to 5.0V output
RMS (5Hz to 20MHz bandwidth) A 5 20 mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth) A 50 80 mVpk-pk
External Capacitance
ESR 10 m A CO 0 5000 F
Output Current
@ Vo = 3.3V A Io 0 20 A dc
@ Vo = 5V A Io 0 15 A dc
Output Current Limit Inception (Hiccup Mode)
(Vo = 95% Vo, set ) A IO, lim 105 115 150 % Io, max
Output Short-Circuit Current A IO, s/c 150 % Io, max
VO 250 mV @ 25o C
Efficiency
VIN= 24V, TA=25°C, IO= IO, max A
@ Vo = 3.3V, IO = 20A A 87 %
@ Vo = 5V, IO = 15A A 92 %
VIN= 48V, TA=25°C, IO= IO, max A
@ Vo = 3.3V, IO = 20A A 88 %
@ Vo = 5V, IO = 15A A 90 %
Switching Frequency A fsw 160 KHz
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
LINEAGE POWER 4
Electrical Specifications (continued)
Parameter Device Symbol Min Typ Max Unit
Dynamic Load Response
(dIo/dt= 1A / 10s; VIN = VIN, nom; TA=25°C)
Load Change from Io= 50% to 75% of Io,max
Peak Deviation A Vpk 2 4 %Vo
Settling Time (Vo<10% peak deviation) t
s 80 150 s
Load Change from Io= 50% to 25% of Io,max
Peak Deviation A Vpk 2 4 %Vo
Settling Time (Vo<10% peak deviation) t
s 80 150 s
Isolation Specifications
Parameter Min Typ Max Unit
Isolation Capacitance 1000 pF
Isolation Resistance 10 M
General Specifications
Parameter Min Typ Max Unit
Calculated MTBF (VIN = 24V, IO=80%IO, max, TA=40°C) 1,677,152 Hours
Weight 25.3 (0.89) g (oz.)
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
LINEAGE POWER 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
On/Off Signal interface
(VIN=VIN, min to VIN, max ; Open collector or equivalent, Signal
referenced to VIN
(
-
)
terminal
Logic Low (Module OFF)
Input low Voltage = 0.0 V A VIL -0.7 1.2 V
Input low Current = 1 mA A IIL 1.0 mA
Logic High (Module ON)
Input High Voltage = 5.0 V A VIH 5 V
Input High Current = 0 mA A IIH 50 A
Turn-On Delay and Rise Times
(IO=80 % IO, max , TA = 25o C)
Case 1: On/Off input is set to Logic High and then input
power is applied (delay from instant at which VIN = VIN, min
until Vo =10% of Vo,nom)
A Tdelay 15 20 msec
Case 2: Input power is applied for at least one second and
then the On/Off input is set to logic high (delay from instant
at which Von/Off = 0.9V until Vo=10% of Vo, set)
A Tdelay 5 10 msec
Output voltage Rise time (time for Vo to rise from 10%
of Vo, nom to 90% of Vo, nom) Vo, nom set to 3.3V A Trise 10 15 msec
Output voltage Rise time (time for Vo to rise from 10%
of Vo, nom to 90% of Vo, nom) Vo, nom set to 5.0V A Trise 15 20 msec
Output voltage overshoot – Startup 1 % VO, set
IO= 80% of IO, max; TA = 25oC
Input Undervoltage Lockout A VUVLO
Turn-on Threshold 17 18 V
Turn-off Threshold 14 15.5 V
Hysteresis 1.5
Input Over voltage Lockout A VOVLO
Turn-on Threshold 60 62 V
Turn-off Threshold 64 65 V
Hysteresis 2
Output Voltage Set point Adjustment
Output remote sense voltage range A VSENSE 10
%
VO,nom
(Max voltage drop is 0.5 V)
Output voltage adjustment range (TRIM) A 3.0 5.5 Vdc
Over voltage protection A VOV, set 5.7 6.5 Vdc
Over Temperature Protection A Tref 130 °C
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
LINEAGE POWER 6
Characteristic Curves
The following figures provide typical characteristics for EQD075A at TA = 25O C
INPUT CURRENT, IIN (A)
0
1
2
3
4
5
6
15 25 35 45 55 6
5
Io = 20A
Io = 1 0 A
Io = 0.0 5A
ON/OFF VOLTAGE OUTPUT VOLTAGE
VOn/off (V) (2V/div) VO (V) (1V/div)
INPUT VOLTAGE, VIN (V) TIME, t (2 ms/div)
Figure 1. Typical Input characteristics at room
temperature (Vo = 3.3V). Figure 4. Typical Start-Up Characteristics from
Remote ON/OFF (Vo = 3.3V, Io = 20A, Vin = 48V).
EFFICIENCY, (%)
70
75
80
85
90
95
0 5 10 15 2
0
Vin = 48V
Vin = 24V
Vin = 60V
Vin = 18V
OUTPUT CURRENT OUTPUT VOLTAGE
IO (A) (5A/div) VO (V) (200 mV/div)
OUTPUT CURRENT, IO (A) TIME, t (0.2 ms/div)
Figure 2. Typi cal Conv erter Efficiency versus Ou tpu t
Current at room temperature (Vo = 3.3V). Figure 5. Transient Response to a Dynamic Load
Change from 50% to 75% to 50% of full load
(3.3V@20A) at Vin =48V.
OUTPUT VOLTAGE
VO (V) (50mV/div)
OUTPUT CURRENT OUTPUT VOLTAGE
IO (A) (5A/div) VO (V) (200 mV/div)
TIME, t (1 s/div) TIME, t (0.2 ms/div)
Figure 3. Typical Output Ripple and Noise at Vo=
3.3V and Io = 20A. Figure 6. Transient Response to a Dynamic Load
Change from 50% to 75% to 50% of full load
(3.3V@20A) at Vin = 24V.
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75W
7
Characteristic Curves (continued)
The following figures provide typical characteristics for EQD075A at TA = 25O C
INPUT CURRENT, IIN (A)
0
1
2
3
4
5
6
15 25 35 45 55 65
Io = 0A
Io = 7.5A
Io = 15A
ON/OFF VOLTAGE OUTPUT VOLTAGE
VOn/off (V) (5V/div) VO (V) (2V/div)
INPUT VOLTAGE, VIN (V) TIME, t (5 ms/div)
Figure7. Typical Input characteristics at room
temperature (Vo = 5V). Figure 10. Typical Start-Up Characteristics from
Remote ON/OFF (Vo = 5V, Io = 15A, Vin = 48V)
EFFICIENCY, (%)
70
75
80
85
90
95
051015
Vin = 18V
Vin = 24V
Vin = 48V
Vin = 60V
OUTPUT CURRENT OUTPUT VOLTAGE
IO (A) (5A/div) VO (V) (100 mV/div)
OUTPUT CURRENT, IO (A) TIME, t (0.2ms/div)
Figure 8. Typi c al Conv erter Effici ency ver su s Output
Current at room temperature (Vo = 5V). Figure 11. Transi ent Response to a Dynamic Load
Change from 50% to 75% to 50% of full load
(5V@15A) at Vin =48V.
OUTPUT
VOLTAGE
VO (V) (50mV/div)
OUTPUT CURRENT OUTPUT VOLTAGE
IO (A) (5A/div) VO (V) (100 mV/div)
TIME, t (1 s/div) TIME, t (0.2ms/div)
Figure 9. Typical Output Ripple and Noise at Vo = 5V
and Io = 15A. Figure 12. Transi ent Response to a Dynamic Load
Change from 50% to 75% to 50% of full load
(5V@15A) at Vin =24V.
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
LINEAGE POWER 8
Characteristic Curves (continued)
The following figures provide typical characteristics for EQD075A at TA = 25O C
OUTPUT CURRENT (A)
0
5
10
15
20
20 30 40 50 60 70 80 90
2.0 m/s
(400 lfm)
1.0 m/s
(200 lfm)
0.5 m/s
(100 lfm)
NC
OUTPUT CURRENT (A)
0
5
10
15
20
25
20 30 40 50 60 70 80 90
NC 0.5 m/s
(100 lfm)
1.0 m/s
(200 lfm)
2.0 m/s
(400 lfm)
TEMPERATURE (OC) TEMPERATURE (OC)
Figure 13. Ther m al Dera ti ng Curves for the EQD07 5
module at 24Vin and Vo=5V. Figure 16. Thermal Derating Curves for the
EQD075 module at 48Vin and Vo=3.3V.
OUTPUT CURRENT (A)
0
5
10
15
20
20 30 40 50 60 70 80 90
N
C
0.5 m/s
(100 lfm)
1.0 m/s
(200 lfm)
2.0 m/s
(400 lfm)
TEMPERATURE (OC)
Figure 14. Ther m al Dera ti ng Curves for the EQD07 5
module at 48Vin and Vo=5V.
OUTPUT CURRENT (A)
0
5
10
15
20
25
20 30 40 50 60 70 80 90
NC 0.5 m/s
(
100 lfm
)
2.0 m/s
(400 lfm)
1.0 m/s
(200 lfm)
TEMPERATURE (OC)
Figure 15. Ther m al Dera ti ng Curves for the EQD07 5
module at 24Vin and Vo=3.3V.
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
9
Test Configurations
Figure 17. 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 measurement errors due to socket contact
resistance.
V
O (+)
COM
1uF .
RESISTIVE
LOAD
SCOPE
COPPER STRIP
GROUND PLANE
10uF
Figure 18. 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 19. Output Vo ltage and Effi ciency Test
Setup.
=
VO. IO
VIN. IIN
x 100 %
Efficiency
Design Considerations
Input Filtering
The power module should be connected to a low ac-
impedance source. Highly inductive source
impedance can affect the stability of the power
module. For the test configuration in Figure 17, a
220µF electrolytic capacitor (ESR<0.1 at 100 kHz),
mounted close to the power module helps ensure the
stability of the unit. Consult your sales representative
for further applications guidelines.
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., UL60950-1, CSA C22.2 No. 60950-1-
03, EN60950-1 and VDE 0805:2001-12.
These converters have been evaluated to the spacing
requirements for Basic insulation, per the above
safety standards; and 1500 Vdc is applied from Vin to
Vout to 100% of outgoing production.
For end products connected to –48V dc nominal DC
MAINS (i.e. central office dc battery plant), no further
fault testing is required. For all input voltages, other
than DC MAINS, where the input voltage is less than
60V dc, if the input meets all of the requirements for
SELV, then:
The output may be considered SELV. Output
voltages will remain within SELV limits even with
internally-generated non-SELV voltages. Single
component failure and fault tests were performed
in the power converters.
One pole of the input and one pole of the output
are to be grounded, or both circuits are to be kept
floating, to maintain the output voltage to ground
voltage within ELV or SELV limits.
The power module has ELV (extra-low voltage)
outputs when all inputs are ELV.
All flammable materials used in the manufacturing of
these modules are rated 94V-0, or tested to the
UL60950 A.2 for reduced thickness.
The input to these units is to be provided with a
maximum 6.3 A very fast-acting surface mount fuse in
the unearthed lead.
TO OSCILLOSCOPE CURRENT PROBE
LTEST
12H
BATTERY
C
S
220F
Electrolytic
E.S.R.<0.1
@ 20°C 100kHz
33 F
Ceramic
VIN
(+)
COM
NOTE: Measure input reflected ripple current with a simulated
source inductance (L
TEST ) of 12H. Capacitor C S offsets
possible battery impedance. Measure current as shown
above.
C
IN
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75W
LINEAGE POWER 10
Feature Descriptions
Remote On/Off
The EQD075 series power modules have primary
referenced remote On/Off. The remote on/off is open
collector compatible with the signal common
referenced to the negative input. The standard
remote on/off negative logic is such that a unit
operates (ON) when the remote on/off signal is low or
short circuit to minus VIN. A module will be OFF when
the remote on/off pin is open circuit or when the
remote on/off signal is high. The optional positive
logic remote on/off is such that a unit operates (ON)
when the remote on/off signal is high or open-circuit.
A unit will be OFF when the remote on/off signal is
low or short-circuited to minus VIN.
ON/OFF
VIN
(
+
)
VIN(-)
Ion/off
Von/off
VO
COM
Figure 20. Circuit configuration for using Remote
On/Off Implementation.
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 a hiccup mode. If the unit is
not configured with auto–restart, then it will latch off
following the over current condition. 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. If the unit is configured with the
auto-restart option (4), it will remain in the hiccup
mode as long as the overcurrent condition exists; it
operates normally, once the output current is brought
back into its specified range.
Input Undervoltage Lockout
At input voltages below the input under voltage
lockout limit, the module operation is disabled. The
module will begin to operate at an input voltage above
the under voltage lockout turn-on threshold.
Overtemperature 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. If the auto-restart option (4) is ordered, the
module will automatically restart upon cool-down to a
safe temperature.
Over Voltage Protection
The output over voltage protection scheme of the
modules has an independent over voltage loop to
prevent single point of failure. This protection feature
latches in the event of over voltage across the output.
Cycling the on/off pin or input voltage resets the
latching protection feature. If the auto-restart option
(4) is ordered, the module will automatically restart
upon an internally programmed time elapsing.
Remote sense
The EQD075 series power modules have a Remote
Sense feature to minimize the effects of distribution
losses by regulating the voltage at the Remote Sense
pin (See Figure 21). The voltage between the Sense
pin and Vo pin must not exceed 0.5V. The opened
sense line resistor value should be selected in range
of 30 ohm – 100 ohm that eases use of external
parallel load share controller.
The amount of power delivered by the module is
defined as the output voltage multiplied by the output
current (Vo x Io). When using Remote Sense, the
output voltage of the module can increase, which, if
the same output is maintained, increases the power
output from the module. Make sure that the maximum
output power of the module remains at or below the
maximum rated power. When the Remote Sense
feature is not being used, connect the Remote Sense
pins to the output pins of the module.
V
O
(+)
SENSE(+)
SENSE(–)
V
O
(–)
V
I
(+)
V
I
(-)
I
O
LOAD
CONTACT AND
D I STRI BU TI ON LOSSES
SUPPLY I
I
CONTACT
RESI STA N CE
Figure 21. Effective Circuit Configuration for
remote sense operation.
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
11
Feature Descriptions (continued)
Output Voltage Programming
The output voltage is adjustable between 3.0 to 5.5V
(A version). A resistor placed between the Trim pin
and Sense (+) increases the output voltage and a
resistor placed between the Trim pin and Sense (-)
decreases the output voltage. Figure 22 shows the
circuit configuration using an external resistor. The
trim resistor should be positioned close to the module.
If the trim pin is not used then the pin shall be left
open. If no trim resistor is connected, for the A
version, the output voltage will be 5V.
The following equations determine the required
external resistor value to obtain a percentage output
voltage change of %.
To decrease output voltage set point:
KR downtrim 2.10
%
510
Where,
100% ,
,
nomo
desirednomo
VVV
Vdesired = Desired output voltage set point (V).
To increase the output voltage set point
K
V
Rnomo
uptrim 2.10
%
510
%*225.1 %100**1.5 ,
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 absolute increase in output voltage,
due to simultaneous remote sense and trim
increases, shall not exceed the larger of the specified
individual remote sense or trim maximum limits shown
in the Features Specifications table.
V
O
(+)
TRIM
V
O
(-)
R
trim-down
LOAD
V
IN
(+)
ON/OFF
V
IN
(-)
R
trim-up
SENSE (+)
SENSE (-)
Figure 22. Circuit Configuration to program output
voltage using an external resistor.
Pre-Bias Immunity
The modules are able to start into a pre-biased output
with a monotonic rise of the output voltage. During
shutdown an internal feature implemented in the
module ensures there will be no reverse current.
Thermal Considerations
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 is based on physical measurements
taken in a wind tunnel. The test set-up is shown in
Figure 23.
The thermal reference point, Tref, used in the
specifications is shown in Figure 24. For reliable
operation, this temperature should not exceed 125OC.
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 24. Tref Temperature Meas urement
Location.
A
ir
flow
x
Power Module
Wind Tunnel
PWBs
6.55_
(0.258)
76.2_
(3.0)
Probe Location
for measuring
airflow and
ambient
temperature
25.4_
(1.0)
Figure 23. Thermal Test Set up.
Tref
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
LINEAGE POWER 12
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.]
TOP
VIEW
SIDE
VIEW
BOTTOM
VIEW
Data Sheet
August 12, 2010 EQD075 series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75W
LINEAGE POWER 13
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.]
Data Sheet
August 12, 2010 EQD075 Series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75
W
LINEAGE POWER 14
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 3C/s is suggested. The
wave preheat process should be such that the
temperature of the power module board is kept below
210C. For Pb solder, the recommended pot
temperature is 260C, while the Pb-free solder pot is
270C 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 Lineage Power
Power System representative for more details.
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 Lineage Power Board
Mounted Power Modules: Soldering and Cleaning
Application Note.
Data Sheet
August 12, 2010 EQD075 series Single Output: Eighth Brick Power Modules:
18-60Vdc Input; 3.3 to 5.0Vdc Output; 75W
Document No: DS05-031 ver. 1.31
PDF name: EQD075A.pdf
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 1. Device Code
Product c odes Input Voltage Output
Voltage Output
Current Efficiency Connector
Type Comcodes
EQD075A1 18 – 60V 5/3.3V 15/20A 90% TH 108994463
EQD075A41 18 – 60V 5/3.3V 15/20A 90% TH 108994455
EQD075A41Z 18 – 60V 5/3.3V 15/20A 90% TH CC109114393
EQD075A641 18 – 60V 5/3.3V 15/20A 90% TH CC109126117
EQD075A641Z 18 – 60V 5/3.3V 15/20A 90% TH CC109147880
EQD075A81Z 18 – 60V 5/3.3V 15/20A 90% TH CC109129103
Table 2. Device Options Option Suffix
Negative remote on/off logic 1
Auto-restart (from OTP, OVP, OCP) 4
Pin Length: 3.68 mm 0.25 mm (0.145 in. 0.010 in.) 6
Pin Length: 2.79 mm 0.25 mm (0.110 in. 0.010 in.) 8
RoHS Compliant Z
World Wide Headquarters
Lineage Power Corporation
601 Shiloh Road, Plano, TX 75074, USA
+1-800-526-7819
(Outside U.S.A.: +1-972-244-9428)
www.lineagepower.com
e-mai l: t ec h s u p po rt 1 @lineage power.com
Asia-Pacific Headquarters
Tel: +65 6593 7211
Euro pe, Middl e- East and Africa He adquar te r s
Tel: +49 89 878067-280
India Headquarters
Tel: +91 80 28411633
Lineage Power 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
a
pplication. No rights under any patent accompany the sale of any such product(s) or information.
Lineage Power DC-DC products are protected under various patents. Information on these patents is available at www.lineagepower.com/patents.
©
2009 Linea
g
e Power Cor
p
oration
,
(
Plano
,
Texas
)
All International Ri
g
hts Reserved.
