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參數(shù)資料
| 型號： | PSL486-9LIPDA |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | METAL, CASE L04, MODULE |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 255K |
| 代理商： | PSL486-9LIPDA |
PSL Series Extended Data Sheet
Positive Switching Regulators (Rugged)
REV. APR 26, 2004
Page 7 of 16
Auxiliary Functions
R Control for Output Voltage Adjustment
Note: With open R input,
Vo
≈ Vo nom. R excludes option P.
The output voltage
Vo can either be adjusted with an exter-
nal voltage (
Vext) or with an external resistor (R1 or R2). The
adjustment range is 0 - 108% of
Vo nom. The minimum differ-
ential voltage
DVio min between input and output (see: Elec-
trical Input Data) should be maintained. Undervoltage lock-
out = Minimum input voltage.
Fig. 6
Voltage adjustment with Vext between R and Go–.
a)
Vo = 0 - 108% Vo nom, using Vext between R and Go–:
Vo
Vext
≈ 2.5 V –––––
Vo
≈ Vo nom –––––
Vo nom
2.5 V
Fig. 7
Voltage adjustment with external resistor R1 or R2
b)
Vo = 0 - 100% Vo nom, using R1 between R and Go–:
4000
Vo
Vo nom R1
R1
≈ –––––––––––
Vo
≈ –––––––––––
Vo nom – Vo
R1 + 4000
c)
Vo = Vo nom - Vo max, using R2 between R and Vo+:
Vo max = Vo nom + 8%
4000
Vo (Vo nom – 2.5 V)
R2
≈ ––––––––––––––––––––––––
2.5 V (
Vo – Vo nom)
Vo nom 2.5 V R2
Vo
≈ ––––––––––––––––––––––––––––––––
2.5 V (
R2 + 4000
) – Vo nom 4000
Vo+
R
+
4000
G
Vref
Vext
–
+
06035
Caution: To prevent damage
Vext should not exceed
20 V, nor be negative and
R2 should never be less than
47 k
.
Vo+
R
–
+
G
4000
Vref
R1
R2
06036
LED Output Voltage Indicator
A green output indicator LED shines when the output volt-
age is higher than approx. 3 V.
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