TIDA-00445, Shunt-Based 200A Peak Current Measurement Reference Design Using Isolation Amplifier
使用 Texas Instruments 的 LM4040BIM3-2.5 的参考设计
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- Industrial Drives
- Speed Detection
说明
- TIDA-00445, Shunt-Based 200A Peak Current Measurement Reference Design Using Isolation Amplifier. The TIDA-00445 design provides a reference solution for isolated current measurement using shunt and isolated amplifier. By limiting the shunt voltage to 25mV, this design is able to reduce power dissipation in the shunt and achieves a high current measurement range of up to 200A. Shunt voltage is further amplified by precision Op-Amps in instrumentation amplifier based configuration with a gain of 10 to match the input range of isolation amplifier. The output of isolation amplifier is level shifted and scaled to utilize the complete input range of 3.3v ADC. This design uses free running transformer driver for generating isolated supply voltage for the high voltage side of the circuit
Featured Parts (5)
| 零件编号 | 供应商 | 类别 | 说明 | |||
|---|---|---|---|---|---|---|
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SN6501DBVR | Step-Up/Down DC-DC Converter | Texas Instruments | DC to DC Converter and Switching Regulator Chip | Transformer Driver Medical 5-Pin SOT-23 T/R | 买入 | |
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OPA2376AID | Texas Instruments | Operational Amplifiers - Op Amps | Op Amp Dual Precision Amplifier R-R I/O ±2.75V/5.5V 8-Pin SOIC Tube | 买入 | |
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AMC1200BDWV | Texas Instruments | Special Purpose Amplifiers | SP Amp ISOL Amp Single 5.5V 8-Pin SOIC Tube | 买入 | |
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OPA376AIDBVR | Texas Instruments | Operational Amplifiers - Op Amps | Op Amp Single Precision Amplifier R-R I/O ±2.75V/5.5V 5-Pin SOT-23 T/R | 买入 | |
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REF2033AIDDCR | Texas Instruments | Voltage References | V-Ref Precision 3.3V 20mA 5-Pin TSOT-23 T/R | 买入 | |