JW100G1 Lineage Power, JW100G1 Datasheet - Page 10

• Manufacturer Part Number: JW100G1
• Manufacturer: Lineage Power

JW100G and JW150G Power Modules; dc-dc Converters:
36 Vdc to 75 Vdc Input, 2.5 Vdc Output; 50 W to 75 W
Feature Descriptions
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 3.0 V. This limit includes any increase
in voltage due to remote-sense compensation and out-
put voltage set-point adjustment (trim). See Figure 19.
If not using the remote-sense feature to regulate the
output at the point of load, then connect SENSE(+) to
V
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 19. Effective Circuit Configuration for
10
10
O
[V
(+) and SENSE(–) to V
O
SUPPLY
RESISTANCE
(+) – V
CONTACT
Single-Module Remote-Sense Operation
O
I
(–)] – [SENSE(+) – SENSE(–)] ≤ 0.5 V
I
V
V
I
I
(+)
(–)
SENSE(+)
SENSE(–)
O
O
(–) at the module.
V
V
(+) and V
O
O
(+)
(–)
(continued)
DISTRIBUTION LOSSES
I
O
O
CONTACT AND
(–) terminals
LOAD
8-651 (F).m
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 Δ%.
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 voltage between the V
must not exceed 3.8 V. This limit includes any increase
in voltage due to remote-sense compensation and out-
put voltage set-point adjustment (trim). See Figure 19.
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.
O, adj
R
R
adj-down
adj-up
) decreases (see Figure 20). The following equa-
O, adj
=
) increases (see Figure 21).
=
⎛
⎝
V
------------------------------------- -
⎛
⎝
O
100
--------- - 2
Δ%
1.225Δ%
(
adj-down
100
–
adj-up
+
⎞ kΩ
⎠
), the output voltage set point
Δ%
O
), the output voltage set
(+) and V
)
–
(
--------------------------------- -
100
Δ%
+
O
(–) terminals
2Δ%
Lineage Power
March 2008
Data Sheet
)
⎞ kΩ
⎠