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IR2177S

International Rectifier
Part Number IR2177S
Manufacturer International Rectifier
Description Phase Current Sensor IC
Published Feb 27, 2015
Detailed Description Data Sheet No. PD60233 revB IR2277S/IR2177S(PbF) Phase Current Sensor IC for AC motor control Features • Floating cha...
Datasheet PDF File IR2177S PDF File

IR2177S
IR2177S

Overview
Data Sheet No.
PD60233 revB IR2277S/IR2177S(PbF) Phase Current Sensor IC for AC motor control 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 Product Summary VOFFSET (max) IR2277 1200 V IR2177 600 V Vin range ±250mV Bootstrap supply range 8-20 V Floating channel quiescent current (max) Sensing latency (max) Throughput Over Current threshold (max) 2.
2 mA 7.
5 µsec (@20kHz) 40ksample/sec (@20kHz) ±470 mV 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.
The time interval is level shifted and given to the output both as a PWM signal (PO) and analog voltage (OUT).
The analog voltage is proportional to the measured current and is ratio metric with respect to an externally provided voltage reference.
The max throughput is 40 ksample/sec suitable for up to 20 kHz asymmetrical PWM modulation and max delay is <7.
5 µsec (@20kHz).
Also a fast over current signal is provided for IGBT protection.
Typical Connection Package (Please refer to Lead Assignments for correct pin configuration.
This diagram shows electrical connections only) 1 www.
irf.
com IR2277S/IR2177S(PbF) Absolute Maximum Ratings Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur.
All voltage parameters are absolute voltages referenced to VSS, all currents are defined positive into any lead.
The Thermal Resistance and Power Dissipation ratings are measured under board mounted...


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