JBW050F Lineage Power, JBW050F Datasheet - Page 9

• Manufacturer Part Number: JBW050F
• Manufacturer: Lineage Power

Data Sheet
September 20, 2004
Feature Descriptions
Remote Sense
Figure 12. Effective Circuit Configuration for
Output Voltage Set-Point Adjustment (Trim)
Output voltage trim allows the user to increase or
decrease the output voltage set point of a module. This
is accomplished by connecting an external resistor
between the TRIM pin and either the SENSE(+) or
SENSE(–) pins. The trim resistor should be positioned
close to the module.
If not using the trim feature, leave the TRIM pin open.
With an external resistor between the TRIM and
SENSE(–) pins (R
(V
tion determines the required external-resistor value to
obtain a percentage output voltage change of ∆%.
The test results for this configuration are displayed in
Figure 14. This figure applies to all output voltages.
With an external resistor connected between the TRIM
and SENSE(+) pins (R
point (V
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of ∆%.
Tyco Electronics Power Systems
O, adj
R
R
adj-up
SUPPLY
RESISTANCE
adj-down
) decreases (see Figure 13). The following equa-
CONTACT
O, adj
=
Single-Module Remote-Sense Operation
) increases (see Figure 15).


=
V
------------------------------------- -
I
I
O


1.225∆%
(
100
--------- - 2
∆%
100
adj-down
(continued)
V
V
I
I
(+)
(–)
–
+
adj-up
SENSE(+)
SENSE(–)
∆%
 kΩ

), the output voltage set point
V
V
), the output voltage set
)
O
O
–
(+)
(–)
(continued)
(
--------------------------------- -
100
DISTRIBUTION LOSSES
∆%
I
O
+
2∆%
CONTACT AND
LOAD
)
 kΩ

8-651m
JBW050F Power Modules: dc-dc Converter;
The test results for this configuration are displayed in
Figure 16.
36 to 75 Vdc Input, 3.3 Vdc Output; 33 W