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參數(shù)資料
| 型號： | LW030A1 |
| 廠商： | LINEAGE POWER LLC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 30 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | MODULE-10 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大小： | 514K |
| 代理商： | LW030A1 |
Lineage Power
9
Data Sheet
April 2008
36 Vdc to 75 Vdc Inputs; 19.8 W to 30 W
LW030-Series Power Modules:
Feature Descriptions (continued)
Remote On/Off (continued)
8-720(C).h
Figure 14. Remote On/Off Implementation
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.:
[VO(+) – VO(–)] – [SENSE(+) – SENSE(–)] 10%VO,
nom
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum output overvoltage shut-
down voltage as indicated in the Feature Specifications
table. 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 remote-sense feature to regulate the
output at the point of load, then connect SENSE(+) to
VO(+) and SENSE(–) to VO(–) at the module.
8-651(C).m
Figure 15. Effective Circuit Configuration for
Single-Module Remote-Sense Operation
Output Voltage Adjustment
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 VO(+) or VO(–)
pins. With an external resistor between the TRIM and
VO(+) pins (Radj-down), the output voltage set point
(VO, adj) decreases. The following equations determine
the required external resistor value to obtain an output
voltage change of %.
For the LW030F:
For the LW030A:
where Radj-down is the resistance value connected
between TRIM and VO (+).
For example, to lower the output voltage of the
LW030A by 10%, the external resistor value must be:
Radj-down = 67.8 k
With an external resistor connected between the TRIM
and VO(–) pins (Radj-up), the output voltage set point
(VO, adj) increases. The following equations determine
the required external resistor value to obtain an output
voltage change of %.
For the LW030F:
For the LW030A:
where Radj-up is the resistance value connected
between TRIM and VO(–).
For example, to increase the output voltage of the
LW030A by 10%, the external resistor value must be:
Radj-up = 84.7 k
+
Ion/off
–
Von/off
REMOTE
ON/OFF
VI(+)
VI(–)
SENSE(+)
SENSE(–)
VO(+)
VO(–)
LOAD
VO(+)
SENSE(+)
SENSE(–)
VO(–)
VI(+)
VI(-)
IO
LOAD
CONTACT AND
DISTRIBUTION LOSSES
SUPPLY
II
CONTACT
RESISTANCE
Radj-down
VO,adj
1.23
–
() 28.47
×
VO, nom
VO, adj
–
---------------------------------------------------
kΩ
=
Radj-down
8.47
Δ%
--------- 16.94
–
k
Ω
=
Radj-up
10.62
Δ%
------------ kΩ
=
Radj-up
8.47
Δ%
--------- kΩ
=
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