IR2177SPBF

Data Sheet No. PD60233 revB IR2277S/IR2177S(PbF) Phase Current Sensor IC for AC motor control Features Product Summary V (max) IR2277 1200 V OFFSET Floating channel up to 600 V for IR2177 & 1200 V for IR2177 600 V IR2277 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 470 mV Ratiometric analog output suitable for DSP A/D interface (max) 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 Package 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 sec ( 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 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 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 IR2277 - 0.3 1225 V High Side Floating Supply Voltage V B IR2177 - 0.3 625 V High Side Floating Ground Voltage - 25 + 0.3 V V V S B B V / V High-Side Inputs Voltages - 5 + 0.3 V in+ in- V V S B G0 / G1 High-Side Range Selectors - 0.3 + 0.3 V V V S 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 V /V DSP Reference High and Low Voltages - 0.3 V + 0.3 V RH RL CC Out Analog Output Voltage - 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 dV /dt Allowable Offset Voltage Slew Rate 50 V/ns S 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 V . The offset rating is tested with all supplies biased at 15V differential. ss V 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 IR2277 1200 V High Side Floating Ground Voltage -5 V S IR2177 600 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 SS CC f Sync Input Frequency Using PO 4 20 kHz sync Using OUT 8 20 PO PWM Output -0.3 Note 2 V OC Over Current Output Voltage -0.3 Note 2 V V OUT Reference High Voltage 3 V-2.5 V CC RH V OUT Reference Low Voltage V V-3 V SS RH RL T Ambient Temperature -40 125 C A Note 1: Shorted to V or V B S Note 2: Pull-Up Resistor to V CC 2 www.irf.com