Shunt based Ground Fault Protection for Inverters Powered from 220Vac Supply Reference Design (TIDA-00442)

The TIDA-00442 TI design provides a reference solution for detecting ground fault in inverter based drives. Inverter current is measured on both DC positive and DC negative bus using shunt resistors. Current on DC positive bus is measured using INA170 which is powered by low side switched buck converter. Current on DC negative bus is sensed using precision opamp’s. The difference between the two measured currents is compared against a fixed threshold to determine the ground fault condition using high speed comparators.

Возможности

Shunt based current sensing for inverter control and protection Rated to measure DC Link current of +/-20APK (Design tested for +/-5A) High side current sense circuit with high common mode voltage of +450V supporting 220Vac mains powered drives Calibrated high-side and low-side measurement error over operating temperature range of -10°C to 55°C < 1.5%: Ground fault: (Minimum fault current detection of 300mA, Detection time of less than 50µs) Designed to be interfaced with built-in 3.3V ADC of MCU

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Shunt based Ground Fault Protection for Inverters Powered from 220Vac Supply Reference Design TIDA-00442

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Покупка печатной платы для TIDA-00442

Цена: 2653 ₽
от 3 шт. 1316 ₽
от 5 шт. 1084 ₽
Срок поставки 3 недели

Используемые компоненты

Производитель: Texas Instruments
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INA170EA/2K5
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Арт.: 53334 ИНФО PDF AN RD
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Current Sense Amp IC; No. of Amplifiers:1; Common Mode Voltage Vcm:60V; Gain Max, V/V:100; Gain Bandwidth -3db:400kHz; Supply Voltage Min:2.7V; Supply Voltage Max:40V; No. of Pins:8; Operating Temperature Range:-55°C to +125°C
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INA170EA/250
INA170EA/250
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Арт.: 234099 ИНФО PDF AN RD
Доступно: 4673 шт.
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условия
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Current Sensing; Common Mode Voltage Vcm:60V; Gain Bandwidth -3db:400kHz; Supply Voltage Min:2.7V; Supply Voltage Max:40V; No. of Pins:8; Operating Temperature Range:-55°C to +125°C; Bandwidth Max:400kHz
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INA170EA/250G4
INA170EA/250G4
Texas Instruments
Арт.: 381732 ИНФО PDF AN RD
Доступно: 1418 шт.
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60-V, High-Side, Bi-Directional, High-Speed, Current Output Current Shunt Monitor 8-VSSOP -40 to 85
INA170EA/250G4
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INA170EA/2K5G4
INA170EA/2K5G4
Texas Instruments
Арт.: 381733 ИНФО PDF AN RD
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предложений
60-V, High-Side, Bi-Directional, High-Speed, Current Output Current Shunt Monitor 8-VSSOP -40 to 85
INA170EA/2K5G4
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