www.fairchildsemi.com FAN8800 (KA3162) Single IGBT Gate Driver Features Description • • • • • • • • • The FAN8800 is a monolithic integrated circuit designed for driving single IGBT with De-saturation and undervoltage protection. It is suitable for driving discrete and module IGBTs, and further, it offers a cost effective solution for driving power MOSFETs. The integrated fault feedback notifies the controller when the IGBT is shutdown due to a De-saturation or a over current condition. High Current Output: 1.0A Source and 2.0A Sink Protection against Overcurrent and Short circuit CMOS Compatible Input and Fault Status Indicator Programmable Fault-Out Duration Time Built in Slow Turn-off Circuit Under Fault Condition Undervoltage Lockout Optimized for IGBTs Negative Gate Drive Capability Suitable for Integration in Power Modules -40 to 105°C Operating Temperature 8-DIP ETC. DRIVE IC Typical Applications • Gate drive for single insulated gate bipolar TR • Gate drive for single MOSFET Rev. 1.0.0 ©2000 Fairchild Semiconductor Corporation FAN8800 (KA3162) Pin Assignments TDUR 1 8 DESAT GND 2 7 FAULT FAN8800 IN 3 6 VCC Vee 4 5 OUT ETC. DRIVE IC ( Top View ) Pin Definitions 2 Pin Number Pin Name Pin Function Descrition 1 TDUR Fault Output Duration(Adjustment Capacitor for Fault-Out Duration) 2 GND Ground 3 IN 4 Vee Gate drive voltage output 5 OUT Output supply voltage (Negative) 6 VCC Output supply voltage (Positive) 7 FAULT Fault Output. FAULT changes from a logic low state to a logic high output when a fault condition is detected. 8 DESAT De-saturation voltage input. When the voltage on DESAT exceeds an internal reference voltage of 6.5v while the IGBT is on, FAULT output is changed from a logic low state to a logic high state. Inverting gate drive voltage output (Vout) control input FAN8800 (KA3162) Internal Block Diagram S FAULT 7 Q - 8 DESAT 6 Vcc 4 Vee R + Ref1 6.5v TDUR 1 Fault-Out Duration Delay + Ref2 4.5v UVLO 2 IN 3 Slow Turn off Control Buffer Output Circuit 5 OUT ETC. DRIVE IC GND 3 FAN8800 (KA3162) Equivalent Circuits Driver Input Driver Output Vcc Vcc 5 3 Vee Vee ETC. DRIVE IC Fault Out Desat Vcc 300uA 2K 7 8 Vee Vee TDUR 2K 1 Vee 4 2K FAN8800 (KA3162) Absolute Maximum Ratings (Ta = 25°°C) Parameter Symbol Value Unit Power Supply Voltage VCC - Vee 36 V Output Source Current Output Sink Current IO 1.0 2.0 A Fault Output Source Current Fault Output Sink Current IFO 25 10 mA Input Voltage Vin Vee - 0.3 to VCC V VDESAT -0.3 to VCC V PD 0.56 W Operating Ambient Temperature Range TOPR -40 to 105 °C Storage Temperature Range TSTG -55 to 150 °C De-saturation Voltage Power Dissipation and Thermal Characteristics Maximum Power Dissipation @Ta =25°C Recommened Operating Conditions (Ta = 25°°C) Symbol Min. Typ. Max Unit Total Supply Voltage VCC +13 +15 +18 V Operating Power Supply Voltage Vee -13 -15 -18 V Operating Ambient Temperature Ta -40 25 105 °C ETC. DRIVE IC Parameter 5 FAN8800 (KA3162) Electrical Characteristics (Ta = 25°°C) Parameter Symbol Conditions Min. Typ. Max. Units High Input Threshold Voltage VIH - - 2.7 3.2 V Low Input Threshold Voltage VIL - 1.2 2.3 - - 2.0 2.4 12 14 - - 0.2 1.0 LOGIC INPUT DRIVE OUTPUT Low Output Voltage VOL Isink=1.0A High Output Voltage VOH Isource=500mA Low Fault Output Voltage VFL Isink=5.0A High Fault Output Voltage VFH Isource=20mA 11 13.5 - V FAULT OUTPUT V UVLO Start-up Voltage VCCST - 11 11.5 12 V Disable Voltage VCCDI - 10 10.5 11 V HY - 0.9 1.0 11.1 V Vin=0V, VDESAT=0V 210 300 380 µA Vin=Vcc, VDESAT=Vcc 1.0 2.5 - mA ETC. DRIVE IC UVLO Hysteresis DESATURATION INPUT De-saturation Current Source Discharge Current ICHG IDSCHG OCP and SCP OCP Voltage Reference VOCP - 4.0 4.5 5.0 µA SCP Voltage Reference VSCP - 5.8 6.5 7.3 mA POWER SUPPLY Standby Current ICCST Vin = High, Output open - 14 20 mA Operating Current ICCOP CL=1.0nF, f=20kHz - 20 30 mA Propagation Delay Time to High Output Level TPLH Rg=0, CL=1.0nF f=10kHz, Duty Cycle=50% - 0.35 0.7 µs Propagation Delay Time to Low Output Level TPHL - 0.35 0.7 µs Rise Time Tr - 50 100 ns Fall Time Tf - 50 100 ns OCP Delay Time TOCP 50 80 120 µs SCP Delay Time TSCP - 0.3 1.0 µs Fault Output Duration Time TDUR Cdur=2.7nF 100 170 320 µs CL=4.7nF 0.8 2.0 5.0 µs Slow turn-off time 6 TSLOW FAN8800 (KA3162) Application Information 1. FAULT-OUT DURATION TIME (TDUR) 1) Two modes in Fault-Out Duration. - OCP mode Fault-Out Duration operates after TOCP. - SCP mode If Vpin8 is over 6.5V, Fault-Out Duration will operate after TSCP. 2) TDUR (It can be adjusted by external capacitor (CDUR) is TDUR = C DUR ⁄ 55µA × ( 5V – 1.4V ) = 2.7nF ⁄ 55µA × ( 5V – 1.4V ) = 176µs 2. SLOW TURN-OFF (TSLOW) ETC. DRIVE IC Vlink L O A D Internal Circuit Q1 5 Low Q2 Low Q3 1) When SCP (Short Circuit Protection) is operated, Q3 turns on and Q2 turns on. 2) In the upper condition, Q2 flows the constant current of 35mA. 3) The capacitance of IGBT as the load is discharging by 35mA, that is Slow Turn-off. 4) Slow Turn-off time is TSLOW = C IGBT ⁄ 35mA × ( V5max – V5min ) = 4.7nF ⁄ 35mA × ( 15V – 1V ) = 1.9µs 7 FAN8800 (KA3162) 3. OCP DELAY TIME (TOCP) 1) If the saturation detector(DESAT or Vpin8 ) is 4.5V < Vpin8 < 6.5V, the Fault-Out signal will be high after TOCP. 2) TCOP (This value is fixed internally) is T OCP = 50pF ⁄ 3µA × 5V = 83µs 4. CHARGE TIME IN THE DE-SATURATION DETECTION Internal Circuit Vlink - ETC. DRIVE IC + L O A D 300uA 8 6.5V Detect Control D1 CDESAT Q4 + 4.5V 1) When the signal of Drive Output (Vpin5) is high, Q4 turns on and it is operated De-saturation Detection Mode in upper figure. In this mode, when it detects the voltage of collector- emitter terminal of IGBT through D1. If Vce(sat) + Vf of D1 > 4.5V, it is operated OCP Mode. If Vce(sat) + Vf of D1 > 6.5V, it is operated SCP Mode. When the input signal of IGBT is from low-state to high-state, Q4 turns off and it is operated De-saturation Detection Mode. On this times, the voltage of collector-emitter terminal of IGBT is not saturation-state yet. This period is said On Time Delay (Td (on) ). Here, the operation of CDESAT is following ; When CDESAT is charged by current source of 300uA and so it prevents operating error for Td (on) of IGBT. 2) Slope of Vpin8 is ∆V ⁄ ∆T = 300µA ⁄ C DESAT 8 FAN8800 (KA3162) Timing Chart UVLO Operation Vpin6[V] Start-up Voltage Disable Voltage 15 11.5 10.5 Time 0 Vpin5[V] 15 Time 0 ETC. DRIVE IC Input and Output Signal Input Signal TPHL TPLH Output Signal Tr Tf 9 FAN8800 (KA3162) Timing Chart (Continued) OCP Delay time Input Signal [V] 4.5 Vpin8 Signal Time 0 TOCP Vpin7 Signal ETC. DRIVE IC TDUR Output Signal SCP Delay time Input Signal [V] 6.5 Vpin8 Signal 0 Time TSCP Vpin7 Signal TDUR Output Signal TSLOW 10 FAN8800 (KA3162) Typical Perfomance Characteristics 1. Vcc vs. Icc 2. Temperature vs. ICCST 14 16 ICCST[mA] ICCST[mA] 13.5 13 12.5 8 4 12 11.5 12 13 14 15 16 17 0 18 -50 -25 Vcc[V] 50 75 100 125 ETC. DRIVE IC 4. Temperature vs. TPHL 400 400 300 300 TPHL[ns] TPLH[ns] 25 Temperature[] 3. Temperature vs. TPLH 200 100 0 0 200 100 -50 -25 0 25 50 75 Temperature[] 100 125 0 -50 -25 0 25 50 75 100 125 Temperature[] 11 FAN8800 (KA3162) Typical Perfomance Characteristics (Continued) 5. Temperature vs. TSLOW 6. Temperature vs. ICHG 400 3.5 350 2.5 ICHG[uA] ISLOW [us] 3 2 1.5 1 300 250 0.5 0 -50 -25 0 25 50 75 200 100 125 -50 -25 ETC. DRIVE IC Temperature[] 110 1.2 100 1 ISCP[us] IOCP[us] 1.4 90 80 60 0.2 50 75 Temperature[] 12 100 125 0.6 0.4 25 75 0.8 70 0 50 8. Temperature vs. TSCP 120 -50 -25 25 Temperature[] 7. Temperature vs. TOCP 50 0 100 125 0 -50 -25 0 25 50 75 Temperature[] 100 125 FAN8800 (KA3162) Typical Application Circuits Single Power Supply Application Vlink L O A D FAN8800 1 8 TDUR Vcc 2 7 GND Signal Input DESAT FAULT Fault Output Vcc 6 3 IN Vcc + ETC. DRIVE IC 5 4 Vee OUT Dual Power Supply Application Vlink L O A D FAN8800 8 1 TDUR DESAT 2 7 GND FAULT Fault Output Vcc Signal Input 3 6 IN Vcc 4 5 Vee Vee + OUT + 13 FAN8800 (KA3162) ETC. DRIVE IC Ordering Information 14 Device Package Operating Temperature FAN8800 8-DIP -40°C ~ +105°C FAN8800 (KA3162) ETC. DRIVE IC 15 ETC. DRIVE IC FAN8800 (KA3162) LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 12/28/99 0.0m 001 Stock#DSxxxxxxxx 1999 Fairchild Semiconductor Corporation