QPW025A0F41 datasheet(9/14 Pages) LINEAGEPOWER | 36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current

부품명	QPW025A0F41

부품 상세설명	36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current

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제조업체	LINEAGEPOWER [Lineage Power Corporation]

홈페이지	http://www.lineagepower.com

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9 / 14 page

Data Sheet

May 7, 2008

QPW025A0F41/QPW025A0F41-H DC-DC Power Module

36-75Vdc Input; 3.3Vdc Output Voltage; 25A Output Current

LINEAGE POWER

9

Where,

100

%

,

×

−

=

Δ

nom

o

desired

nom

o

V

Vdesired = Desired output voltage set point (V).

To increase the output voltage set point

(

)

Ω

⎟

⎠

⎞

⎜

⎝

⎛

−

Δ

−

Δ

+

=

−

K

V

R

nom

o

up

trim

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 increase is the larger of either the remote

sense or the trim.

Thermal Considerations

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.

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

Thermocouple Location Tref=115

o C

Figure 14. Tref Temperature measurement location.

Air

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 13. Thermal Test Set up.

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