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參數(shù)資料
| 型號： | PS48M2V5DCF3 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
| 封裝： | 2.280 X 0.500 INCH, 0.350 INCH HEIGHT, MODULE-9 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 260K |
| 代理商： | PS48M2V5DCF3 |
Output Voltage Programming
The output voltage of the converter can be adjusted or
programmed via fixed resistors, potentiometers or voltage
DACs. See Figures 7 & 8.
Vicor Corporation Tel: 800-735-6200 978-470-2900 Fax: 978-475-6715
Page 5
CONTROL FUNCTIONS - SC PIN
Figure 8—Output voltage trim up circuit.
Figure 7—Output voltage trim down circuit.
RU (ohms) =
- 1,000
1.23 (Vout-Vnom)
RD (ohms) =
Vnom - Vout
RU
Trim Up
Load
Error
Amp
1k
1.23V
0.033
F
+OUT
+S
SC
-S
-OUT
RD
Trim Down
Load
Error
Amp
1k
1.23V
0.033
F
+OUT
+S
SC
-S
-OUT
Trim Down
1. This converter is not a constant power device – it has a
constant current limit. Hence, available output power is
reduced by the same percentage that output voltage is
trimmed down. Do not exceed maximum rated output current.
2. The trim down resistor must be connected to the –Sense pin.
Trim Up
1. As output voltage is increased, reduce output current maximum
to insure that maximum rated power is not exceeded.
2. The trim up resistor must be connected to the +Sense pin.
3. Do not trim the converter above maximum trim range
(typically +10%) or the output over voltage
protection circuitry may be activated.
Trim values calculated automatically:
Resistor trim calculators are available on
Vicor’s web site, vicr.com, by selecting
Calculators from the Toolbox.
Resistor values can be calculated for fixed
trim up, fixed trim down and for variable
trim up or down by selecting the trim
calculator for 2nd Generation DC-DC
converters.
In addition to trimming information, the
web site also includes design tips,
applications circuits, EMC suggestions,
thermal design guidelines and PDF data
sheets for all available Vicor products.
For the most current data and applications support, visit vicr.com.
1,000 Vout
1,000 (Vout-1.23) Vnom
PR ELIMINAR Y
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