Data Sheet
February 16, 2009
QSW025A0B Series Power Modules; DC-DC Converters
36 – 75Vdc Input; 12Vdc Output; 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
Device
Symbol
Min
Typ
Max
Unit
Remote On/Off Signal Interface
(VIN=VIN, min to VIN, max , Signal referenced to VIN-
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
All
All
Ion/off
Von/off
Von/off
5
10
⎯
⎯
15
0.8
3.5
μA
Vdc
Vdc
Logic Low Voltage
-0.3
2.0
Logic High Voltage – (Typ = Open Collector)
Logic High maximum allowable leakage
current
(Von/off = 2.0V)
All
All
Ion/off
4.0
μA
⎯
⎯
⎯
⎯
Maximum voltage allowed on On/Off pin
Turn-On Delay and Rise Times
Von/off
13.5
Vdc
(IO=IO, max
)
Tdelay,
Enable with Vin
50
ms
⎯
⎯
Tdelay = Time until VO = 10% of VO,set from either
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.
All
All
Tdelay
,
Enable with
20
ms
⎯
⎯
on/off
Trise = Time for VO to rise from 10% of VO,set to
90% of VO,set
.
Trise
40
13
⎯
65
⎯
75
15
⎯
ms
Vdc
°C
Output Overvoltage Protection (Clamp)
Overtemperature Protection
(See Feature Descriptions)
Input Undervoltage Lockout
Turn-on Threshold
All
All
Tref
125
35
34
36
Vdc
Vdc
⎯
Turn-off Threshold
32
⎯
Input Overvoltage Lockout
Turn-off Threshold
81
79
82
Vdc
Vdc
⎯
Turn-on Threshold
78
⎯
4
LINEAGE POWER
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
