IR21771S Overview
IR21771/IR22771 is a high voltage, high speed, single phase current sensor interface for AC motor drive applications. The current is sensed by an external shunt resistor. The IC converts the analog voltage into a time interval through a precise circuit that also performs a very good ripple rejection showing small group delay.
IR21771S Key Features
- Synchronous sampling measurement system
- High PWM noise (ripple) rejection capability
- Digital PWM output
- Fast Over Current detection
- Suitable for bootstrap power supplies
- Low sensing latency (<7.5 µsec @20kHz) Description