JW100H Lineage Power, JW100H Datasheet - Page 13

• Manufacturer Part Number: JW100H
• Manufacturer: Lineage Power

April 2008
Feature Descriptions
Output Voltage Set-Point Adjustment
(Trim)
Figure 25. Circuit Configuration to Decrease
Figure 26. Resistor Selection for Decreased
Figure 27. Circuit Configuration to Increase
Lineage Power
100k
100
10k
1M
1k
(continued)
0
Output Voltage
Output Voltage
Output Voltage
V
ON/OFF
CASE
V
V
ON/OFF
CASE
V
I
I
(+)
(–)
% CHANGE IN OUTPUT VOLTAGE (•%)
I
I
(+)
(–)
10
SENSE(+)
SENSE (–)
SENSE(+)
SENSE(–)
V
TRIM
V
V
TRIM
V
O
O
O
O
dc-dc Converters; 36 to 75 Vdc Input, 24 Vdc Output; 50 W to 175 W
(+)
(–)
(+)
(–)
20
(continued)
R
R
30
adj-down
adj-up
R
R
LOAD
8-748 (C).b
8-715 (C).b
LOAD
40
8-879 (C)
Figure 28. 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, 150 W and175 W modules feature an over-
temperature 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.
100M
100k
10M
1M
0
Voltage
% CHANGE IN OUTPUT VOLTAGE (•%)
2
4
6
8
8-2093 (C)
10
13