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參數(shù)資料
| 型號(hào)： | MSP1250 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Power Converter 150kHz 3A Step-down Voltage Regulator |
| 中文描述： | 150kHz的第3A電源轉(zhuǎn)換器降壓穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 8/9頁(yè) |
| 文件大?。?/td> | 213K |
| 代理商： | MSP1250 |
MSP1250
Power Converter 150kHz 3A
Step-down Voltage Regulator
Typical Application
1. Fixed Output Voltage Versions
2. INVERTING REGULATOR
The circuit in Figure following converts a positive input voltage to a negative output voltage
with a common ground. The circuit operates by bootstrapping the regulator’s ground pin to
the negative output voltage, and then grounding the feedback pin, the MSP1250 generate a
negative output voltage. Since this regulator topology can produce an output voltage that is
either greater than or less than the input voltage, the maximum output current greatly
depends on both the input and output voltage. The maximum voltage appearing across the
regulator is the absolute sum of the input and output voltage, and this must be limited to a
maximum of 40V.Additional diodes are required in this regulator configuration. Diode D1 is
used to solate input voltage ripple or noise from coupling through the C
IN
capacitor to the
output, under light or no load conditions. Without diode D3, when the input voltage is first
applied, the charging current of C
IN
can pull the output positive by several volts for a short
period of time. Adding D3 prevents the output from going positive by more than a diode
voltage.
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