LINEAGEPOWER QPW025A0F64

Data Sheet
May 7, 2008
QPW025A0F41/QPW025F41-H DC-DC Converter Power Module
36- 75Vdc Input, 3.3Vdc Output and 25A Output Current
Features
ƒ
Delivers up to 25A Output current
ƒ
High efficiency – 92.5% at 3.3V full load
ƒ
Industry standard Quarter brick footprint
57.9mm x 36.8mm x 12.7mm (with base plate)
(2.28in x 1.45in x 0.5in)
Applications
ƒ
Low output ripple and noise
ƒ
2:1 Input voltage
ƒ
Input under voltage protection
ƒ
Output overcurrent/voltage protection
ƒ
Over-temperature protection
ƒ
Tightly regulated output
ƒ
Wireless Networks
ƒ
Remote sense
ƒ
Optical and Access Network Equipment
ƒ
Adjustable output voltage (+10%/ -20%)
ƒ
Enterprise Networks
ƒ
Negative logic, Remote On/Off
ƒ
Latest generation IC’s (DSP, FPGA, ASIC)
and Microprocessor powered applications
ƒ
Auto restart after fault protection shutdown
ƒ
Wide operating temperature range (-40°C to 85°C)
ƒ
Meets the voltage insulation requirements for ETSI
300-132-2 and complies with and is Licensed for
Basic Insulation rating per EN 60950
ƒ
CE mark meets the 2006/95/EC directive§
ƒ
UL* 60950-1Recognized, CSA† C22.2 No. 60950-1‡
rd
03 Certified, and VDE 0805 (EN60950 3 Edition)
Licensed
ƒ
ISO** 9001 and ISO 14001 certified manufacturing
facilities
Options
ƒ
Negative Remote On/Off Logic
ƒ
Auto-restart from Output overcurrent/voltage
and Over-temperature Protections
ƒ
Heat plate version (-H)
Description
The QPW025A0F41 is a new open-frame DC/DC power module designed to provide up to 25A output current in an
industry standard quarter brick package. The converter uses synchronous rectification technology and open-frame
packaging techniques to achieve high efficiency reaching 92.5% at 3.3V full load.
* 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.
§ This product is intended for integration into end-user equipment. All of the required procedures of end-use equipment should be followed.
** ISO is a registered trademark of the International Organization of Standards
Document No: DS05-005 ver. 1.96
PDF name:qpw025a0f41_w-h_ds.pdf
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
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
All
VIN
-
80
Vdc
VIN, trans
-
100
Vdc
All
TA
-40
85
°C
Storage Temperature
All
Tstg
-55
I/O Isolation
All
Input Voltage
Continuous
Transient (100 ms)
Operating Ambient Temperature
(see Thermal Considerations section)
125
°C
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
All
VIN
36
48
75
Vdc
All
IIN,max
-
2.9
Adc
All
IIN, Q
-
5
mA
All
IIN, Idle
-
-
mA
Inrush Transient
All
It
2
-
1
As
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance;
o
Ta 25 C, Cin = TBD)
All
-
16
-
mAp-p
Input Ripple Rejection (100 - 120Hz)
All
-
60
-
dB
Operating Input Voltage
Maximum Input Current
(VIN=0 to VIN, max , Vo = Vo,set, IO=IO, max )
Quiescent Input Current
Remote on / off disabled (VIN = VIN, nom)
Idle Input Current
Remote on / off enabled (VIN = VIN, nom, Io = 0 A)
60
2
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 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 fastacting fuse with a maximum rating of 6A (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.
LINEAGE POWER
2
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Electrical Specifications (continued)
Parameter
Output Voltage Set-point
Symbol
Min
Typ
Max
Unit
VO, set
3.24
3.3
3.36
% VO, set
+1.6
% VO, set
3.4
% VO
(VIN=VIN,nom, IO=IO, max, Tref=25°C)
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Output Regulation
-1.6
VO
3.2
-
Line (VIN = VIN, min to VIN, max)
⎯
0.05
0.2
% VO, nom
Load (IO = IO, min to IO, max)
⎯
0.05
0.2
% VO, nom
Temperature (Tref =TA, min to TA, max)
⎯
0.15
0.50
% VO, nom
RMS (5Hz to 20MHz bandwidth)
⎯
10
20
mVrms
Peak-to-Peak (5Hz to 20MHz bandwidth)
⎯
45
60
mVpk-pk
⎯
10000
μF
25
A dc
Output Ripple and Noise on nominal output
(VIN =VIN, nom and IO = IO, min to IO, max,
Cout = 1μF ceramic // 10μF Tantalum capacitor)
External Capacitance
CO
0
Output Current
Io
0
Output Current Limit Inception (Hiccup Mode)
(Vo = 90% Vo, set )
IO, lim
105
120
130
% Io, max
Output Short-Circuit Current
IO, s/c
⎯
130
150
% Io, max
η
⎯
92.5
⎯
%
fsw
⎯
300
⎯
KHz
Vpk
⎯
5
⎯
% VO
ts
⎯
150
⎯
μs
Vpk
⎯
5
⎯
% VO
ts
⎯
150
⎯
μs
o
VO ≤ 250 mV @ 25 C
Efficiency
VIN= 48V, TA=25°C, IO= IO, max A
Switching Frequency
Dynamic Load Response
(dIO/dt=0.1A/μs; VIN=VIN, nom; TA=25°C)
Load change from IO = 50% to 75% of IO, max
Peak Deviation
Settling Time (VO<10% peak deviation)
Load change from IO = 50% to 25% of IO, max,
Peak Deviation
Settling Time (VO<10% peak deviation)
Isolation Specifications
Symbol
Min
Typ
Max
Unit
Isolation Capacitance
Parameter
CISO
⎯
2700
⎯
pF
Isolation Resistance
RISO
10
⎯
⎯
MΩ
Symbol
Min
Typ
Max
Unit
General Specifications
Parameter
Calculated Reliability based upon Telcordia SR332, Issue 2; Method I Case 3 (IO= 80% of IO, max,
TA=40°C, airflow = 200 lfm, 90% confidence)
Weight
LINEAGE POWER
MTBF
FIT
2,808,445
356
⎯
31 (1.1)
Hours
9
10 /Hours
⎯
g (oz.)
3
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
Symbol
Min
Typ
Max
Unit
On/Off Signal interface
(VI = VI,min to VI, max; Open collector or equivalent
Compatible, signal referenced to VI (-) terminal
Logic High (Module ON)
Input High Voltage
VIH
7
―
15
V
Input High Current
IIH
―
―
50
μA
Input Low Voltage
VIL
0
―
1.2
V
Input Low Current
IIL
―
―
1
mA
Case 1: On/Off input is set to Logic High (Module ON)
and then input power is applied (delay from instant at
which VIN = VIN, min until Vo=10% of Vo,set)
Tdelay
―
5
―
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)
Tdelay
―
2.5
―
msec
Output voltage Rise time (time for Vo to rise from 10% of
Vo, set to 90% of Vo, set)
Trise
―
4
―
msec
―
―
10
% VO, set
―
1
% VO, set
115
⎯
°C
⎯
34.5
36
V
30
31.5
⎯
V
Logic Low (Module OFF)
Turn-On Delay and Rise Times
o
(IO=80% IO, max , VIN=VIN, nom, TA = 25 C)
Output Voltage Remote Sense
Output voltage overshoot – Startup
o
IO= 80% of IO, max; TA = 25 C
Over temperature Protection
Tref
⎯
(See Thermal Considerations section)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
VUVLO
3
Hysteresis
Output voltage adjustment range(TRIM)
80
⎯
110
% VO, set
Over voltage protection
3.8
⎯
4.6
Vdc
LINEAGE POWER
4
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Characteristic Curves
Io = 12.5A
1
0.5
Io = 0.0A
0
30
40
50
60
INPUT VOLTAGE, VIN (V)
70
Figure 1. Typical Start-Up (Input Current)
characteristics at room temperature.
EFFICIENCY (%)
90
Vin = 75V
Vin = 48V
85
Vin = 36V
80
75
70
5
10
15
20
25
TIME, t (100μs/div)
OUTPUT CURRENT, Io (A)
OUTPUT VOLTAGE
VO (V) (200mV/div)
Figure 5. Transient Response to Dynamic Load Change
from 50% to 25% to 50% of full load current.
TIME, t (2μs/div)
Figure 3. Typical Output Ripple and Noise at Vin
=48Vdc.
OUTPUT CURRENT
IO (A) (5A/div)
VO (V) (20mV/div)
OUTPUT VOLTAGE
Figure 2. Converter Efficiency Vs Load at Vo= 3.3 V.
LINEAGE POWER
TIME, t (2 ms/div)
Figure 4. Typical Start-Up Characteristics from Remote
ON/OFF.
95
0
Vo(V) (1V/div)
Io = 25.0A
1.5
OUTPUT VOLTAGE
2
OUTPUT CURRENT OUTPUT VOLTAGE
VO, (V) (200mV/div)
IO (A) (5A/div)
INPUT CURRENT,(A)
2.5
VOn/Off (V) (5V/div)
3
ON/OFF VOLTAGE
The following figures provide typical characteristics for QPW025A0F41/QPW025A0F41-H at 25O C
TIME, t (100μs/div)
Figure 6. Transient Response to Dynamic Load Change
from 75% to 50 % to 75% of full load current.
5
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Test Configurations
Design Considerations
TO OSCILLOSCOPE
LTEST
VI(+)
12 µH
CS 220 µF
ESR < 0.1 W
@ 20 °C, 100 kHz
BATTERY
Input Source Impedance
CURRENT
PROBE
33 µF
ESR < 0.7 W
@ 100 kHz
VI(-)
Note: Input reflected-ripple current is measured with the simulated
source inductance of 1uH. Capacitor Cs offsets possible battery
impedance. Current is measured at the input of the module
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power module.
For the test configuration in Figure 7, a 33 µF
electrolytic capacitor (ESR < 0.7 Ω at 100 kHz) mounted
close to the power module helps ensure stability of the
unit. Consult the factory for further application
guidelines.
Output Capacitance
High output current transient rate of change (high di/dt)
Figure 7. Input Reflected Ripple Current Test Setup. loads may require high values of output capacitance to
supply the instantaneous energy requirement to the
load. To minimize the output voltage transient drop
COPPER STRIP
during this transient, low E.S.R. (equivalent series
resistance) capacitors may be required, since a high
V O (+)
RESISTIV
E.S.R. will produce a correspondingly higher voltage
LOAD
drop during the current transient.
1.0 µF
10 µF SCOPE
Output capacitance and load impedance interact with
the power module’s output voltage regulation control
V O (–)
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
GROUND PLANE
and of the capacitor’s associated E.S.R. may be
Note: Use a 10uF tantalum and a 1uF ceramic capacitor. Scope
dictated, depending on the module’s control system.
measurement should be made using BNC socket. Position the load
between 51 mm and 76mm (2 in. and 3 in.) from the module
The process of determining the acceptable values of
capacitance and E.S.R. is complex and is loadFigure 8. Output Ripple and Noise Test Setup.
dependant. Lineage Power provides Web-based tools to
assist the power module end-user in appraising and
SENSE(+)
adjusting the effect of various load conditions and output
CONTACT AND
DISTRIBUTION LOSSES capacitances on specific power modules for various
load conditions
VO(+ )
V I(+)
II
IO
SUPPLY
LOAD
Safety Considerations
V I(–)
CONTACT
RESISTANCE
V O(–)
SENSE(–)
Figure 9. Output Voltage and Efficiency Test Setup.
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, EN609501 and VDE 0805:2001-12.
VO. IO
Efficiency
η =
VIN. IIN
x
100 %
For end products connected to –48V dc, or –60Vdc
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:
ƒ The output may be considered SELV. Output
voltages will remain within SELV limits even with
internally-generated non-SELV voltages. Single
LINEAGE POWER
6
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
component failure and fault tests were performed in
the power converters.
Feature Descriptions
Remote On/Off
ƒ 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.
For all input sources, other than DC MAINS, where the
input voltage is between 60 and 75V dc (Classified as
TNV-2 in Europe), the following must be meet, if the
converter’s output is to be evaluated for SELV:
Two remote On/Off logic options are available. Positive
logic remote On/Off turns the module ON during a logichigh voltage on the remote On/Off pin, and turns the
module OFF during a logic-low. Negative logic remote
On/Off turns the module OFF during a logic-high and
turns the module ON during logic-low. Negative logic is
specified by suffix “1” at the end of the device code.
To turn the power module on and off, the user must
supply a switch to control the voltage between the
ON/OFF pin and the VIN(–) terminal (Von/Off). The switch
ƒ The input source is to be provided with reinforced
may be an open collector or equivalent (see Figure 10).
insulation from any hazardous voltage, including the A logic-low is Von/off = 0 V to 1.2V. The maximum Ion/off
ac mains.
during a logic low is 1 mA. The switch should maintain a
logic-low voltage while sinking 1 mA.
ƒ One Vi pin and one Vo pin are to be reliably earthed,
or both the input and output pins are to be kept
During a logic-high, the maximum Von/off generated by
floating.
the power module is 15 V. The maximum allowable
leakage current of the switch is 50 µA. If not using the
ƒ Another SELV reliability test is conducted on the
remote on/off feature, do one of the following:
whole system, as required by the safety agencies,
on the combination of supply source and the subject
module to verify that under a single fault, hazardous For positive logic, leave the ON/OFF pin open.
voltages do not appear at the module’s output.
For negative logic, short the ON/OFF pin to V (–).
IN
The power module has ELV (extra-low voltage) outputs
when all inputs are ELV.
Ion/off
+
ON/OFF
Von/off
–
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 6A fast-acting (or time-delay) fuse in the
unearthed lead.
SENSE(+)
VO(+)
LOAD
VI(+)
VI(-)
VO(–)
SENSE(–)
Figure 10. Circuit configuration for using Remote
On/Off Implementation.
Overcurrent Protection
To provide protection in a fault (output overload) condition, the module is equipped with internal current-limiting
circuitry, and can endure current limiting continuously.
At the instance of current-limit inception, the output
current begins to tail-out. When an overcurrent
condition exists beyond a few seconds, the module
enters a “hiccup” mode of operation, whereby it shuts
down and automatically attempts to restart.. While the
fault condition exists, the module will remain in this
hiccup mode, and can remain in this mode until the fault
is cleared. The unit
LINEAGE POWER
7
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Feature Descriptions (continued)
operates normally once the output current is reduced
back into its specified range.
Input Undervoltage Lockout
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 (Maximum rated power = Vo,set x Io,max).
At input voltages below the input undervoltage lockout
limit, the module operation is disabled. The module will
begin to operate at an input voltage between the
undervoltage lockout limit and the minimum operating
input voltage.
SENSE(+)
SENSE(–)
Overtemperature Protection
To provide over temperature protection in a fault
SUPPLY
II
VI(+)
VO(+)
VI(-)
VO(–)
IO
LOAD
condition, the unit relies upon the thermal protection
CONTACT
CONTACT AND
feature of the controller IC. The unit will shut down if the
RESISTANCE
DISTRIBUTION LOSSE
thermal reference point Tref, exceeds the specified
Figure 11. Circuit Configuration to program output
maximum temperature threshold, but the thermal
voltage using external resistor.
shutdown is not intended as a guarantee that the unit
will survive temperatures beyond its rating. The module
will automatically restart after it cools down.
Output Voltage Programming
Trimming allows the user to increase or decrease the
output voltage set point of a module. This is
accomplished by connecting an external resistor
The output overvoltage protection clamp consists of
between the TRIM pin and either the SENSE(+) or
control circuitry, independent of the primary regulation
SENSE(-) pins. A resistor placed between the Trim pin
loop, which monitors the voltage on the output
and Sense (+) increases the output voltage and a
terminals. This control loop has a higher voltage set
resistor placed between the Trim pin and Sense (-)
point than the primary loop (See the overvoltage clamp decreases the output voltage. Figure 12 shows the
values in the Feature Specifications). In a fault
circuit configuration using an external resistor. The trim
condition, the overvoltage clamp ensures that the output resistor should be positioned close to the module. If the
voltage does not exceed Vo, clamp(max). This provides a
trim pin is not used then the pin shall be left open.
redundant voltage-control that reduces the risk of output
overvoltage.
Over Voltage Protection
Remote sense
Remote sense minimizes the effects of distribution
losses by regulating the voltage at the remote-sense
connections (See Figure 11). 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:
[VO(+) – VO(–)] – [SENSE(+) – SENSE(–)] ≤ 10% of
VO,rated
The voltage between the VO(+) and VO(–) terminals must
not exceed the minimum output overvoltage shutdown
value indicated in the Feature Specifications table. This
limit includes any increase in voltage due to remotesense compensation and output voltage setpoint
adjustment (trim) (see Figure 11). 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.
VIN(+)
VO(+)
SENSE (+)
Rtrim-up
ON/OFF
LOAD
TRIM
Rtrim-down
VIN(-)
SENSE (-)
VO(-)
Figure 12. Circuit Configuration to program output
voltage using an external resistor.
The following equations determine the required external
resistor value to obtain a percentage output voltage
change of Δ%.
The amount of power delivered by the module is defined To decrease output voltage set point:
as the voltage at the output terminals multiplied by the
⎞
⎛ 510
output current. When using remote sense and trim, the
Rtrim − down = ⎜
− 10.2 ⎟ KΩ
output voltage of the module can
%
Δ
⎠
⎝
LINEAGE POWER
8
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Where,
Thermal Considerations
Δ% =
Vo , nom − Vdesired
× 100
Vo , nom
Vdesired = Desired output voltage set point (V).
To increase the output voltage set point
⎛ 5.1*Vo , nom * (100 + Δ% ) 510
⎞
Rtrim − up = ⎜
−
− 10.2 ⎟ KΩ
1.225 * Δ%
Δ%
⎝
⎠
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 power modules operate in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation of the unit.
Heat-dissipation components are mounted on the
topside of the module. Heat is removed by conduction,
convection and radiation to the surrounding
environment. Proper cooling can be verified by
measuring the temperature of selected components on
the topside of the power module. Peak temperature can
occur at any to these positions indicated in the following
figure 14.
25.4_
(1.0)
Wind Tunnel
PWBs
Power Module
76.2_
(3.0)
x
6.55_
(0.258)
Probe Location
for measuring
airflow and
ambient
temperature
Air
flow
Figure 13. Thermal Test Set up.
The temperature at any one of these locations should
not exceed 115 °C to ensure reliable operation of the
power module. The output power of the module should
not exceed the rated power for the module as listed in
the Ordering Information table.
Airflow
o
Thermocouple Location Tref=115 C
Figure 14. Tref Temperature measurement location.
LINEAGE POWER
9
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Please refer to the Application Note “Thermal
Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of
thermal aspects including maximum device
temperatures.
Heat Transfer via Convection
Increased airflow over the module enhances the heat
transfer via convection. Thermal derating curves
showing the maximum output current that can be
delivered by the module versus local ambient
temperature (TA) for natural convection, 0.5m/s (100
ft./min) and 1.0 m/s (200 ft./min) are shown in Fig. 15 for
the bare module and in Fig. 16 for the module with
baseplate.
Note that the natural convection condition was
measured at 0.05m/s to 0.1m/s (10ft./min. to 20ft./min.);
however, systems in which these power modules may
be used typically generate natural convection airflow
rates of 0.3m/s (60 ft./min.) due to other heat dissipating
components in the system.
OUTPUT CURRENT (A)
30
25
20
15
NC 0.5 m/s
(100 lfm) 1.0 m/s
(200 lfm)
10
5
0
20
30
40
50
60
70
80
90
O
TEMPERATURE ( C)
Figure 15. Thermal Derating Curves for the
QPW025A0F41 module at 48Vin. Airflow is in the
transverse direction (Vin− to Vin+).
OUTPUT CURRENT (A)
30
25
20
NC
15
0.5 m/s
(100 lfm)
10
5
0
20
30
40
50
60
70
80
90
O
TEMPERATURE ( C)
Figure 16. Thermal Derating Curves for the
QPW025A0F41-H baseplate module at 48Vin. Airflow
is in the transverse direction (Vin− to Vin+).
LINEAGE POWER
10
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
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
† -Optional pin
LINEAGE POWER
11
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Mechanical Outline for module with base plate.
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
† -Optional pin
LINEAGE POWER
12
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
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.)
1.57 (0.062) DIA PIN, 2 PLCS
1.02 (0.040) DIA PIN, 7 PLCS
†
† - Option
LINEAGE POWER
13
Data Sheet
May 7, 2008
QPW025A0F41/QPW025A0F41-H DC-DC Power Module
36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current
Ordering Information
Please contact your Lineage Power Sales Representative for pricing, availability and optional features.
Table 3. Device Code
Input Voltage
Output
Voltage
Output
Current
Efficiency
Connector
Type
Product codes
Comcodes
36 – 75Vdc
36 – 75Vdc
3.3 V
3.3 V
25A
25A
92.5%
92.5%
Through-Hole
Through-Hole
QPW025A0F41
QPW025A0F64
108993580
108996088
36 – 75Vdc
3.3 V
25A
92.5%
Through-Hole
QPW025A0F41-H
108993572
Table 2. Device Options
Option
Negative Logic Remote On/Off
Auto-restart after fault shutdown
Pin Length: 3.68 mm ± 0.25 mm (0.145 in. ± 0.010 in.)
Case pin (only available with –H option)
Base plate version for heat sink attachment
Device Code Suffix
1
4
6
7
-H
Asia-Pacific Headquarters
Tel: +65 6416 4283
World Wide Headquarters
Lineage Power Corporation
3000 Skyline Drive, Mesquite, TX 75149, USA
+1-800-526-7819
(Outside U.S.A.: +1-972-284-2626)
www.lineagepower.com
e-mail: [email protected]
Europe, Middle-East and Africa Headquarters
Tel: +49 89 6089 286
India Headquarters
Tel: +91 80 284 11633
Lin eage Powe r r eserves the right to make ch anges to the pr oduct(s) o r informati on contained he rein without n otice. No liability is assume d as a r esul t of their use or
a pplicatio n. No rig hts under any pa tent accompany the sale o f any such pro duct(s) or information.
© 2008 Line age Powe r Corp orati on, (Mesq uite, Texas) A ll Internati onal Ri ghts Reserved.
Document No: DS05-005 ver. 1.96
PDF name:qpw025a0f41_w-h_ds.pdf