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| H 2.0 Amp IGBT Gate Drive Optocoupler with Integrated Over-current Protection and Fault Feedback Preliminary Technical Data HCPL-3160 Features * Integrated IGBT Desaturation Protection * Integrated Optically Isolated IGBT Fault Status Feedback * CMOS Compatible INPUT and FAULT Status Indicator Description The HCPL-3160 provides low cost, area efficient IGBT gate drive that includes desaturation or over current detection and local IGBT shutdown. The integrated fault feedback optocoupler notifies the controller when the IGBT is shutdown due to a desaturation or over current condition. HP 3160 9630 Actual Size * Small Printed Circuit Board Footprint (SO-16 Package) * -40C to 100C Operating Temperature * Suitable for Integration in Power Modules * 2.0 A Minimum Peak Output Current * 15 kV/s Minimum Common Mode Rejection (CMR) at VCM = 1500 V * VIORM = 890 VPEAK Functional Diagram 1 2 3 4 5 SHIELD 6 7 8 16 15 14 13 12 11 10 9 This data sheet represents the latest information at the time of publication of this catalog. All specifications subject to change. Samples available Fall 1996. 1-212 Fault Circuit Operation A typical desaturation protected IGBT gate drive application circuit using the HCPL-3160 is shown in Figure 1. The IGBT collector to emitter voltage is monitored through DDESAT. When the IGPT is on and VDESAT exceeds the internal reference voltage of 7 V the IGBT gate is "softly" turned-off by M2 to prevent large di/dt generation. The LED2 driver is also activated, which drives the internal feedback LED2 and notifies the controller of the IGBT fault by bringing the FAULT output low. The FAULT output remains low until RESET is brought low. (Note if a separate reset line is not required, RESET can be connected to Vin on the circuit board. In this case, the FAULT output will be reset on the next PWM cycle that Vin goes low.) The FAULT output is an open collector which allows the FAULT outputs from all the HCPL-3160s in a drive to be connected together in a "wired OR" forming a single fault bus for interfacing with the micro-controller. The ENABLE input can also be connected to this fault bus. With this connection all IGBTs in a drive are shutdown without micro-controller intervention once a fault is detected on a single IGBT. CBLANK disables the fault detection circuitry for a time period sufficient for normal IGBT turn-on. CBLANK is held low by Q1 when the IGBT is off. HCPL-3160 DETECTOR IC VE LIGHTGUIDE 1 CBLANK DDESAT A3 R2 (OPTIONAL) 0.1 F UVLO + - + - VUVLO 12 V/11 V GND LED1- LED1+ VCC1 BUFFER IC TRIPLE DARLINGTON ICHG + - VCC2 RG ENABLE VIN RESET LED1 LIGHTGUIDE 2 D R I V E R VE RQ IDSCHG Q1 VE - + + - DESAT 7V VE SQ M2 1X M1 33X + - VEE VCC1 FAULT QR LED2 QS GND SHIELD VE SHIELD VE LED2 DRIVER Figure 1. IGBT Gate Drive with Desaturation Protection and Fault Feedback. 1-213 Preliminary Electrical Specifications (DC) Over recommended operating conditions (TA = -40 to 100C) unless otherwise specified. Parameter Logic Low Voltages Symbol INPUT RESET FAULT ENABLE INPUT RESET FAULT ENABLE IOH IOL VOH VOL ICC1H ICC1L ICC2H ICC2L ICHG IDSCHG VUVLO+ VUVLOUVLO Hysteresis Desaturation Trip Voltage VUVLO+ VUVLOVDESAT 6.0 11.2 (8.7) 0.2 3 3 0.32 60 13.0 13.4 (10.9) (12.5) 11.6 (9.5) 1.4 7.0 8.0 2.0 Min. Typ.* Max. 0.8 Units V Conditions Logic High Voltages V High Level Output Current Low Level Output Current High Level Output Voltage Low Level Output Voltage High Level Supply Current High Level Supply Current High Level Supply Current Low Level Supply Current Blanking Capacitor Charging Current Blanking Capacitor Discharge Current UVLO Threshold 0.5 2.0 0.5 2.0 1.5 2.0 A A A A V 0.5 12 2 7 7 0.45 V mA mA mA mA mA mA V V V V VO = VCC2 -4 V VO = VCC2 15 V VO = VEE + 2.5 V VO = VEE + 15 IO = -100 mA IO = 100 mA Vin = 5 V, VCC1 = 5 V Vin = 0 V, VCC1 = 5 V output open output open Vdesat = 0 V Vdesat = 7 V VCC2 = 1.0 ms ramp, VO > 5 V VCC2 = 1.0 ms ramp, VO > 5 V VCC2-4 VCC2-3 0.1 *All typical values at TA = 25C and VCC2 - VEE = 30 V, unless otherwise noted. 1) V UVLO+ and VUVLO- are specified as the VCC2 at which VO exceeds 5 V. The approximate output voltage just prior/after the UVLO transition is given in parenthesis. 1-214 Preliminary Switching Specifications (AC) Over recommended operating conditions (TA = -40 to 100C) unless otherwise specified. Parameter Propagation Delay Time to High Output Level Propagation Delay Time to Low Output Level Pulse Width Distortion Propagation Delay Difference Between Any Two Parts Rise Time Fall Time Propagation Delay Time from Desat to Low Level Output Propagation Delay Time from Desat to Low Level FAULT Signal Minimum FAULT Signal Pulse Width UVLO Turn Off Delay Output High Level Common Mode Transient Immunity Output Low Level Common Mode Transient Immunity Symbol tPLH tPHL pwd tPHL - tPLH Min. 0.10 0.10 -0.1 -0.4 Typ.* 0.30 Max. 0.50 0.50 0.1 0.4 Units s s s s Conditions Rg = 10 , Cg = 10 nF, f = 10 kHz, Duty Cycle = 50% tr tf tP(DS) 0.1 0.1 1.5 s s s Rg = 10 , CG = 10 nF RG = 10 , CG = 10 nF tPF(DS) 10 s tFAULT tUVLO OFF |CMH| 15 2.0 0.6 30 s s kV/s TA = 25C, INPUT = 5 V, VCM = 1500 V, VCC = 30 V TA = 25C, VCM = 1500 V, INPUT = 0 V, VCC2 = 30 V |CML| 15 30 kV/s *All typical values at TA = 25C and VCC2 - VEE = 30 V, unless otherwise noted. 1-215 |
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