Data Sheet
JHC/JHW350 Power Module; dc-dc Converter
March 26, 2008
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
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 ; open collector or equivalent,
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
Remote On/Off Current – Logic Low
On/Off Voltage:
All
Ion/off
0.15
1.0
mA
⎯
Logic Low
All
All
All
Von/off
Von/off
Ion/off
0.0
⎯
0.5
5
V
V
⎯
__
⎯
Logic High – (Typ = Open Collector)
Logic High maximum allowable leakage current
Turn-On Delay and Rise Times
50
μA
⎯
(IO=IO, max
)
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.
R
40
50
__
__
ms
⎯
⎯
90
__
⎯
⎯
Tdelay
Trise = time for VO to rise from 10% of VO,set to 90%
All
Trise
ms
of VO,set
.
Output Voltage Adjustment
(See Feature Descriptions)
All
All
Vtrim
110
5
%VO, nom
Output Voltage Set-point Adjustment Range (trim)
Output Voltage Remote-sense Range
(See Feature Descriptions)
%VO, nom
Vsense
Output Overvoltage Protection
Overtemperature Protection
R
VO, limit
31
__
38
V
All
Tref
110
°C
⎯
⎯
(See Feature Descriptions)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
VIN, UVLO
JHC350R
JHC350R
JHC350R
JHW350R
JHW350R
17.5
16.5
1
18
V
V
V
V
V
15.5
Turn-on Threshold
Turn-off Threshold
35
36
⎯
---
⎯
31
33
Hysteresis
JHW350R
---
2
V
LINEAGE POWER
5
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
