JC075C Lineage Power, JC075C Datasheet - Page 9

• Manufacturer Part Number: JC075C
• Manufacturer: Lineage Power

Feature descriptions
Remote Sense
Figure 15. 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. With an external resistor between the
TRIM and SENSE(–) pins (R
set point (V
ing equation determines the required external-resistor
value to obtain a percentage output voltage change of
Δ%.
The test results for this configuration are displayed in
Figure 17. This figure applies to all output voltages.
With an external resistor connected between the TRIM
and SENSE(+) pins (R
point (V
Note: The output voltage of this module may be increased to a maxi-
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of Δ%.
Only trim up to 0.5 V maximum. See note above.
R
R
mum of 0.5 V. The 0.5 V is the combination of both the remote-
sense and the output voltage set-point adjustment (trim). Do
not exceed 15.5 V between the V
adj-up
adj-down
SUPPLY
O, adj
Data Sheet
March 2008
RESISTANCE
Lineage Power
CONTACT
o, adj
=
) increases (see Figure 18).
Single-Module Remote-Sense Operation
⎛
⎝
=
) decreases (see Figure 16). The follow-
V
------------------------------------- -
I
⎛
⎝
I
O
100
--------- - 2
1.225Δ%
Δ%
(
100
(continued)
V
V
–
I
I
adj-up
(+)
(–)
+
⎞ kΩ
⎠
Δ%
SENSE(+)
SENSE(–)
), the output voltage set
adj-down
V
V
)
O
O
(continued)
–
(+)
(–)
O
(
--------------------------------- -
(+) and V
100
), the output voltage
CONTACT AND
DISTRIBUTION LOSSES
I
Δ%
O
+
2Δ%
O
(–) terminals.
JC050C, JC075C, JC100C Power Modules: dc-dc Converters;
)
LOAD
⎞ kΩ
⎠
8-651 (C).h
18 Vdc to 36 Vdc Input, 15 Vdc Output; 50 W to 100 W
The test results for this configuration are displayed in
Figure 17. For applications requiring voltage between
15 V and 24 V, consider using the JC050H, JC075H,
JC100H (24 V) trimmed down.
The voltage between the V
must not exceed 16.5 V. This limit includes any
increase in voltage due to remote-sense compensation
and output voltage set-point adjustment (trim). See
Figure 15.
If not using the trim feature, leave the TRIM pin open.
Figure 16. Circuit Configuration to Decrease
Figure 17. Resistor Selection for Decreased
100 k
10 k
100
1 k
10
V
ON/OFF
CASE
V
1
I
I
(+)
(–)
0
Output Voltage
Output Voltage
SENSE(+)
SENSE(–)
10
% CHANGE IN OUTPUT VOLTAGE
V
TRIM
V
O
O
(+)
(–)
20
O
(+) and V
30
R
adj-down
O
(–) terminals
40
R
LOAD
8-1237 (C).a
8-748 (C).c
50
9