Data Sheet

October 11, 2011

ESTW025A0F Series Eighth-Brick Power Modules

36–75Vdc Input; 3.3Vdc Output; 25A Output

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

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 - Remote On/Off Current

All





0.15

mA

Logic Low - On/Off Voltage

All

-0.7



0.6

Logic High Voltage – (Typ = Open Collector)

All

2.4



15.0

Logic High maximum allowable leakage current

All





25

μA

Turn-On Delay

Case 1: Input power is applied for >1 second and then

All

―

12

―

msec

Case 2: On/Off input is set to Logic Low (Module

All

―

20

―

msec

All

―

4

―

msec

Output voltage overshoot – Startup

All

―

5

Prebias Output Load Performance:

Output Start up characteristic

All

Monotonic

Back Bias current drawn from output (Module Enabled)

All

-15

Remote Sense Range

All

10

Output Voltage Adjustment Range

All

-20

+10

2

All

3.9

5.1

Overtemperature Protection – Hiccup Auto Restart

All



125



Input Undervoltage Lockout

All

Turn-on Threshold



34.0

35.5

Turn-off Threshold

30.5

32.0



Hysteresis

1.0

2.0



1.

following the rapid cycling of Vin from normal levels to less than the Input Undervoltage Lockout (which causes module shutdown), and

then back to normal.

2.

The module requires a minimum of 470 μF external output capacitor to prevent shutdown during full load to no load transients and to avoid

exceeding the OVP maximum limits during startup into open loop fault conditions.