JBW050F Lineage Power, JBW050F Datasheet - Page 10

• Manufacturer Part Number: JBW050F
• Manufacturer: Lineage Power

JBW050F Power Modules: dc-dc Converter;
36 to 75 Vdc Input, 3.3 Vdc Output; 33 W
The voltage between the V
must not exceed the minimum value of the output over-
voltage protection. This limit includes any increase in
voltage due to remote-sense compensation and output
voltage set-point adjustment (trim). See Figure 12.
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum increase is the larger of either the
remote sense or the trim. Consult the factory if you
need to increase the output voltage more than the
above limitation.
The amount of power delivered by the module is
defined as the voltage at the output terminals multiplied
by the output current. When using remote sense and
trim, the output voltage of the module can be
increased, which at the same output current would
increase the power output of the module. Care should
be taken to ensure that the maximum output power of
the module remains at or below the maximum rated
power.
Figure 13. Circuit Configuration to Decrease
Figure 14. Resistor Selection for Decreased
10
10
100k
100
10k
1M
1k
V
ON/OFF
CASE
V
I
I
0
(+)
(–)
Output Voltage
Output Voltage
% CHANGE IN OUTPUT VOLTAGE (∆%)
SENSE(+)
SENSE(–)
10
V
TRIM
V
O
O
(+)
(–)
O
(+) and V
20
R
O
adj-down
(–) terminals
30
R
LOAD
8-748b
40
8-879
Feature Descriptions
Output Voltage Set-Point Adjustment
(Trim)
Figure 15. Circuit Configuration to Increase
Figure 16. 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 module features an overtemperature protection cir-
cuit 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
V
ON/OFF
CASE
V
0
I
I
(+)
(–)
(continued)
Output Voltage
Voltage
% C H A N G E IN O U T P U T V O LT A G E ( % )
SENSE(+)
SENSE(–)
2
V
TRIM
V
O
O
(+)
(–)
Tyco Electronics Power Systems
4
September 20, 2004
(continued)
6
R
adj-up
Data Sheet
8
R
LOAD
8-715b
8-2090
10