JBW030F Datasheet, PDF (10/16 Pages) Lineage Power Corporation – 36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W

JBW030-Series Power Module: dc-dc Converters
36-75 Vdc Input; 3.3 Vdc and 5 Vdc Outputs; 30 W
Data Sheet
March 27, 2008
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment
(Trim) (continued)
The combination of the output voltage adjustment and
sense range and the output voltage given in the Fea-
ture Specifications table cannot exceed 110% of the
nominal output voltage between the VO(+) and VO(–)
terminals.
The JBW030-Series Power Modules have a fixed cur-
rent-limit set point. Therefore, as the output voltage is
adjusted down, the available output power is reduced.
In addition, the minimum output current is a function of
the output voltage. As the output voltage is adjusted
down, the minimum required output current can
increase.
VI (+)
VO (+)
ON/OFF SENSE(+)
CASE
TRIM
VI (–)
SENSE(–)
VO(–)
Radj-down
RLOAD
8-748(C)b
VI(+)
VO(+)
ON/OFF SENSE(+)
CASE
VI(–)
TRIM
SENSE(–)
VO(–)
Radj-up
RLOAD
8-715(C)b
Figure 17. Circuit Configuration to Increase Output
Voltage
Output Overvoltage Protection
The output overvoltage clamp consists of control cir-
cuitry, independent of the primary regulation loop, that
monitors the voltage on the output terminals. The con-
trol loop of the clamp has a higher voltage set point
than the primary loop (see Feature Specifications
table). This provides a redundant voltage-control that
reduces the risk of output overvoltage.
Figure 16. Circuit Configuration to Decrease
Output Voltage
10
Lineage Power