Data Sheet

February 16, 2009

QSW025A0B Series Power Modules; DC-DC Converters

36 – 75Vdc Input; 12Vdc Output; 25A Output Current

4

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

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

On/Off Thresholds:

Remote On/Off Current – Logic Low

All

5

10

15

μA

Logic Low Voltage

All

-0.3

⎯

0.8

Logic High Voltage – (Typ = Open Collector)

All

2.0

⎯

3.5

Logic High maximum allowable leakage

current

All

⎯

⎯

4.0

μA

Maximum voltage allowed on On/Off pin

All

⎯

⎯

13.5

Turn-On Delay and Rise Times

⎯

50

⎯

ms

All

Enable with Vin

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.

Enable with

on/off

⎯

20

⎯

ms

All

40

65

75

ms

Output Overvoltage Protection (Clamp)

All

13

⎯

15

Overtemperature Protection

All

⎯

125

⎯

°C

(See Feature Descriptions)

Input Undervoltage Lockout

Turn-on Threshold

⎯

35

36

Turn-off Threshold

32

34

⎯

Input Overvoltage Lockout

Turn-off Threshold

⎯

81

82

Turn-on Threshold

78

79

⎯