IR21771SPBF Infineon

Data Sheet No. PD60234 revB IR22771S/IR21771S(PbF) Phase Current Sensor IC for AC motor control Features Product Summary V (max) IR22771 1200 V OFFSET Floating channel up to 600V for IR21771 and 1200V for IR21771 600V IR22771 V range 250mV in Synchronous sampling measurement system Bootstrap supply range 8-20 V High PWM noise (ripple) rejection capability Floating channel quiescent 2.2 mA Digital PWM output current (max) Sensing latency (max) 7.5 sec Fast Over Current detection ( 20kHz) Suitable for bootstrap power supplies Throughput 40ksample/sec ( 20kHz) Low sensing latency (<7.5 sec 20kHz) Over Current threshold (max) 470 mV Description 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 Package performs a very good ripple rejection showing small group delay. The time interval is level shifted and given to the output. The max throughput is 40 ksample/sec suitable for up to 20 kHz asymmetrical PWM modulation and max delay is <7.5sec ( 20kHz). Also a fast over current signal is provided for IGBT protection. Typical Connection (Please refer to Lead Assignments for correct pin configuration. This diagram shows electrical connections only) 1 www.irf.com IR22771S/IR21771S(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 V all currents are defined positive into any lead. The Thermal Resistance and Power SS Dissipation ratings are measured under board mounted and still air conditions. Symbol Definition Min. Max. Units IR22771 - 0.3 1225 V V High Side Floating Supply Voltage B IR21771 - 0.3 625 V V High Side Floating Ground Voltage - 25 + 0.3 V S V V B B V / V High-Side Inputs Voltages - 5 + 0.3 V V V in+ in- B B G0 / G1 High-Side Range Selectors - 0.3 + 0.3 V V V B B V Low-Side Fixed Supply Voltage - 0.3 25 V CC Sync Low-Side Input Synchronization Signal - 0.3 V + 0.3 V CC PO PWM Output - 0.3 V + 0.3 V CC OC Over Current Output Voltage - 0.3 V + 0.3 V CC dVS/dt Allowable Offset Voltage Slew Rate 50 V/ns P Maximum Power Dissipation 250 mW D R Thermal Resistance, Junction to Ambient 90 C/W thJA T Junction Temperature -40 125 C J T Storage Temperature -55 150 C S T Lead Temperature (Soldering, 10 seconds) 300 C L Recommended Operating Conditions For proper operation the device should be used within the recommended conditions. All voltage parameters are absolute voltages referenced to . The offset rating is tested with all supplies biased at 15V differential. V V SS S Symbol Definition Min. Max. Units V High Side Floating Supply Voltage (V V) V + 8.0 V + 20 V - S S BS B S IR22771 -5 1200 V V High Side Floating Ground Voltage S IR21771 -5 600 V V / V High-Side Inputs Voltages V - 5.0 V + 5.0 V in+ in- S S G0 / G1 High-Side Range Selectors Note 1 Note1 V Low Side Logic Fixed Supply Voltage 8 20 V CC Sync Low-Side Input Synchronization Signal V V V CC SS f Sync Input Frequency 4 20 kHz sync PO PWM Output -0.3 Note 2 V OC Over Current Output Voltage -0.3 Note 2 V T Ambient Temperature -40 125 C A Note 1: Shorted to V or V S B Note 2: Pull-Up Resistor to V CC 2 www.irf.com