Description
IR2177/IR2277 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.

FEATUREs
• Floating channel up to 600 V for IR2177 & 1200 V for IR2277
• 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)
• Ratiometric analog output suitable for DSP A/D interface