JW075B Lineage Power, JW075B Datasheet - Page 12

• Manufacturer Part Number: JW075B
• Manufacturer: Lineage Power

JW050B, JW075B, JW100B, JW150B Power Modules:
Feature Descriptions
Output Voltage Set-Point Adjustment
(Trim)
Figure 22. Circuit Configuration to Decrease
Figure 23. Resistor Selection for Decreased
Figure 24. Circuit Configuration to Increase
12
12
dc-dc Converters; 36 to 75 Vdc Input, 12 Vdc Output; 50 W to 150 W
100k
100
10k
1M
1k
V
ON/OFF
CASE
V
V
ON/OFF
CASE
V
I
I
I
I
0
(+)
(–)
(+)
(–)
(continued)
Output Voltage
Output Voltage
Output Voltage
SENSE(+)
SENSE(+)
SENSE(–)
SENSE(–)
% CHANGE IN OUTPUT VOLTAGE ( %)
10
V
TRIM
V
TRIM
V
V
O
O
O
O
(+)
(+)
(–)
(–)
(continued)
20
R
adj-down
R
adj-up
30
R
R
LOAD
LOAD
8-748 (C).b
8-715 (C).b
8-879 (C)
40
Figure 25. Resistor Selection for Increased Output
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.
Overtemperature Protection
The 100 W and 150 W modules feature an overtemper-
ature protection circuit to safeguard against thermal
damage.
The circuit shuts down the module when the maximum
case temperature is exceeded. The module restarts
automatically after cooling.
100k
10M
10k
1M
0
Voltage
% CHANGE IN OUTPUT VOLTAGE ( %)
2
4
6
Data Sheet
April 2008
Lineage Power
8
8-2091 (C)
10