JC050H Lineage Power, JC050H Datasheet - Page 9

• Manufacturer Part Number: JC050H
• Manufacturer: Lineage Power

March 2008
Feature Descriptions
Remote On/Off
Remote Sense
Remote sense minimizes the effects of distribution
losses by regulating the voltage at the remote-sense
connections. The voltage between the remote-sense
pins and the output terminals must not exceed the out-
put voltage sense range given in the Feature Specifica-
tions table, i.e.:
The voltage between the V
must not exceed 26.4 V. This limit includes any
increase in voltage due to remote-sense compensation
and output voltage set-point adjustment (trim). See
Title 15.
If not using the remote-sense feature to regulate the
output at the point of load, then connect SENSE(+) to
V
Figure 15. Effective Circuit Configuration for
Lineage Power
O
(+) and SENSE(–) to V
[V
SUPPLY
Figure 14. Remote On/Off Implementation
RESISTANCE
O
CONTACT
(+) – V
V
I
on/off
on/off
+
–
Single-Module Remote-Sense Operation
I
O
I
(–)] – [SENSE(+) – SENSE(–)] ≤ 2.5 V
ON/OFF
V
V
I
I
(+)
(–)
V
V
(continued)
I
I
(+)
(–)
SENSE(+)
SENSE(–)
O
O
V
V
(–) at the module.
dc-dc Converters; 18 to 36 Vdc Input, 24 Vdc Output; 50 W to 100 W
O
O
(+) and V
(+)
(–)
SENSE(+)
SENSE(–)
(continued)
V
V
O
O
CONTACT AND
DISTRIBUTION LOSSES
I
(+)
(–)
O
O
(–) terminals
LOAD
8-651 (C).m
8-720 (C).c
LOAD
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
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
Title 17. 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 Δ%.
The test results for this configuration are displayed in
Title 19.
The voltage between the V
must not exceed 26.4 V. This limit includes any
increase in voltage due to remote-sense compensation
and output voltage set-point adjustment (trim). See
Title 15.
If not using the trim feature, leave the TRIM pin open.
Figure 16. Circuit Configuration to Decrease
R
R
adj-up
adj-down
V
ON/OFF
CASE
V
I
I
O, adj
(+)
(–)
o, adj
=
) increases (see Title 18).
Output Voltage
⎛
⎝
=
) decreases (see Title 16). The following
V
------------------------------------- -
SENSE(+)
SENSE(–)
⎛
⎝
O
100
--------- - 2
1.225Δ%
Δ%
(
100
V
TRIM
V
O
O
(+)
–
(–)
adj-up
+
⎞ kΩ
⎠
Δ%
O
), the output voltage set
(+) and V
adj-down
)
–
(
--------------------------------- -
100
R
), the output voltage
adj-down
Δ%
+
O
(–) terminals
2Δ%
)
⎞ kΩ
⎠
R
LOAD
8-748 (C).b
9