Data Sheet
October 11, 2011
ESTW025A0F Series Eighth-Brick Power Modules
36–75Vdc Input; 3.3Vdc Output; 25A Output
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
Remote On/Off Signal Interface
(V
IN
=V
IN, min
to V
IN, max
; open collector or equivalent,
Signal referenced to V
IN-
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 - Remote On/Off Current
Logic Low - On/Off Voltage
Logic High Voltage – (Typ = Open Collector)
Logic High maximum allowable leakage current
Turn-On Delay and Rise Times
(I
O
=I
O, max ,
V
IN
=V
IN, nom,
T
A
= 25 C)
Case 1: Input power is applied for >1 second and then
the On/Off input is set to ON (T
delay
= time from instant
On/Off signal is ON until V
O
= 10% of V
O, set
)
Case 2: On/Off input is set to Logic Low (Module
ON) and then input power is applied (T
delay
= time
at which V
IN
= V
IN, min
until V
o
=10% of V
O,set
)
Output voltage Rise time (time for V
o
to rise from 10%
of V
o,set
to 90% of V
o, set
)
Output voltage overshoot – Startup
I
O
= I
O, max
; V
IN
=V
IN, min
to V
IN, max
, T
A
= 25 C
Prebias Output Load Performance:
Output Start up characteristic
Back Bias current drawn from output (Module Enabled)
Remote Sense Range
Output Voltage Adjustment Range
Output Overvoltage Protection (C
O
=470μF)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
1.
2.
2
o
o
1
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
I
on/off
V
on/off
V
on/off
I
on/off
-0.7
2.4
0.15
0.6
15.0
25
mA
V
dc
V
dc
μA
All
T
delay
―
12
―
msec
All
All
All
T
delay
T
rise
―
―
20
4
―
―
―
5
msec
msec
% V
O, set
All
All
All
All
All
All
All
V
O, limit
T
ref
V
UVLO
30.5
1.0
V
SENSE
-20
3.9
Monotonic
-15
10
+10
5.1
125
34.0
32.0
2.0
35.5
mA
dc
% V
O, set
% V
O, set
V
dc
O
Overtemperature Protection – Hiccup Auto Restart
C
V
dc
V
dc
V
dc
The module has an adaptable extended Turn-On Delay interval, T
delay
, of 25mS. The extended T
delay
will occur when the module restarts
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.
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.
LINEAGE
POWER
4
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
