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參數(shù)資料
| 型號(hào)： | LH2320-2D2 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 48 W AC-DC REG PWR SUPPLY MODULE |
| 文件頁(yè)數(shù)： | 5/6頁(yè) |
| 文件大小： | 240K |
| 代理商： | LH2320-2D2 |
OUTPUT VOLTAGE ADJUSTMENT
As a standard feature, single output modules offer an adjustable output voltage, identified by the letter “R” in the part number. The output voltage V1 can either be adjusted
with an external voltage (Vext) or with an external resistor (R1 or R2) to the new value, V1A. The adjustment range of V1A is approximately 0% to 110% of the nominal
output voltage, V1. For output voltages above the nominal output value, the minimum input voltage must be increased proportionally to the increase in output. For example,
to increase the output of an H Series power supply to 110% of initial value, the minimum input voltage must be increased by an additional 10%.
Method 1:
Adjust output voltage V1A from 0% to 110% of V1 using Vext between +VOLTAGE ADJUST (pin 14) and -VOLTAGE ADJUST (pin 17). NOTE: Values of Vext must be
between 0.0V and 8.0V.
Method 2:
Adjust output voltage V1A from 0% to 100% of V1 using resistor R1 between +VOLTAGE ADJUST (pin 14) and -VOLTAGE ADJUST (pin 17).
Method 3:
Adjust output voltage V1A from 100% to 110% of V1 using resistor R2 between +VOLTAGE ADJUST (pin 14) and output V1 (pin 20).
R2=
4000 x V1
A x (V1 -2.5V)
and V1
A=
V1X 2.5V X R2
2.5V X (V1
A -V1)
2.5V X (R2 + 4000 )-(V1 X 4000 )
NOTES:
To prevent damage, R2 should never be less than 47k . R inputs of n units with paralleled outputs may be paralleled,
but if one single external resistor is to be used, its value should be R1/n, or R2/n respectively.
V1
A =
Vext X V1
where Vext =
2.5V X V1
A
—————
———————
2.5V
V1
Voltage Adjustment with external voltage Vext
V1
A =
V1 X R1
where Vext =
4000 X V1
A
——————
———————
R1 + 4000
V1- V1
A
Voltage Adjustment with external resistor R1 or R2
5
H SERIES AC/DC
NUCLEAR AND MEDICAL APPLICATIONS Power-One products are not authorized for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc.
TECHNICAL REVISIONS The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
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