FAN8800

www.fairchildsemi.com FAN8800 (KA3162) Single IGBT Gate Driver Features • • • • • • • • • 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 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. 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 ( Top View ) ETC. DRIVE IC Pin Definitions Pin Number 1 2 3 4 5 6 7 8 Pin Name TDUR GND IN Vee OUT VCC FAULT DESAT Ground Inverting gate drive voltage output (Vout) control input Gate drive voltage output Output supply voltage (Negative) Output supply voltage (Positive) Fault Output. FAULT changes from a logic low state to a logic high output when a fault condition is detected. 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. Pin Function Descrition Fault Output Duration(Adjustment Capacitor for Fault-Out Duration) 2 FAN8800 (KA3162) Internal Block Diagram S FAULT 7 Q R + Ref1 6.5v 8 DESAT TDUR 1 Fault-Out Duration Delay + Ref2 4.5v 6 Vcc UVLO GND 2 Slow Turn off Control 4 Vee IN 3 Buffer Output Circuit 5 OUT ETC. DRIVE IC 3 FAN8800 (KA3162) Equivalent Circuits Driver Input Driver Output Vcc Vcc 5 3 Vee Vee Fault Out Desat ETC. DRIVE IC Vcc 300uA 2K 7 8 2K Vee Vee TDUR 2K 1 Vee 4 FAN8800 (KA3162) Absolute Maximum Ratings (Ta = 25°C) Parameter Power Supply Voltage Output Source Current Output Sink Current Fault Output Source Current Fault Output Sink Current Input Voltage De-saturation Voltage Power Dissipation and Thermal Characteristics Maximum Power Dissipation @Ta =25°C Operating Ambient Temperature Range Storage Temperature Range Symbol VCC - Vee IO IFO Vin VDESAT PD TOPR TSTG Value 36 1.0 2.0 25 10 Vee - 0.3 to VCC -0.3 to VCC 0.56 -40 to 105 -55 to 150 Unit V A mA V V W °C °C Recommened Operating Conditions (Ta = 25°C) ETC. DRIVE IC Parameter Total Supply Voltage Operating Power Supply Voltage Operating Ambient Temperature Symbol VCC Vee Ta Min. +13 -13 -40 Typ. +15 -15 25 Max +18 -18 105 Unit V V °C 5 FAN8800 (KA3162) Electrical Characteristics (Ta = 25°C) Parameter LOGIC INPUT High Input Threshold Voltage Low Input Threshold Voltage DRIVE OUTPUT Low Output Voltage High Output Voltage FAULT OUTPUT Low Fault Output Voltage High Fault Output Voltage UVLO Start-up Voltage Disable Voltage UVLO Hysteresis VCCST VCCDI HY ICHG IDSCHG VOCP VSCP ICCST ICCOP TPLH TPHL Tr Tf TOCP TSCP TDUR TSLOW Cdur=2.7nF CL=4.7nF Vin=0V, VDESAT=0V Vin=Vcc, VDESAT=Vcc Vin = High, Output open CL=1.0nF, f=20kHz Rg=0, CL=1.0nF f=10kHz, Duty Cycle=50% 11 10 0.9 210 1.0 4.0 5.8 50 100 0.8 11.5 10.5 1.0 300 2.5 4.5 6.5 14 20 0.35 0.35 50 50 80 0.3 170 2.0 12 11 11.1 380 5.0 7.3 20 30 0.7 0.7 100 100 120 1.0 320 5.0 V V V µA mA µA mA mA mA µs µs ns ns µs µs µs µs VFL VFH Isink=5.0A Isource=20mA 11 0.2 13.5 1.0 V VOL VOH Isink=1.0A Isource=500mA 12 2.0 14 2.4 V VIH VIL 1.2 2.7 2.3 3.2 V Symbol Conditions Min. Typ. Max. Units ETC. DRIVE IC 6 DESATURATION INPUT De-saturation Current Source Discharge Current OCP and SCP OCP Voltage Reference SCP Voltage Reference POWER SUPPLY Standby Current Operating Current Propagation Delay Time to High Output Level Propagation Delay Time to Low Output Level Rise Time Fall Time OCP Delay Time SCP Delay Time Fault Output Duration Time Slow turn-off time 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 ⁄ 55 µ A × ( 5V – 1.4V ) = 2.7nF ⁄ 55 µ A × ( 5V – 1.4V ) = 176 µ s 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 ) = 1.9 µ s 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 ⁄ 3 µ A × 5V = 83 µ s 4. CHARGE TIME IN THE DE-SATURATION DETECTION Internal Circuit Vlink + 300uA 8 L O A D ETC. DRIVE IC 6.5V Detect Control Q4 + 4.5V D1 CDESAT 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 = 300 µ A ⁄ C DESAT 8 FAN8800 (KA3162) Timing Chart UVLO Operation Vpin6[V] 15 11.5 10.5 Start-up Voltage Disable Voltage 0 Time Vpin5[V] 15 0 Time Input and Output Signal ETC. DRIVE IC Input Signal TPHL TPLH Output Signal Tr Tf 9 FAN8800 (KA3162) Timing Chart (Continued) OCP Delay time Input Signal [V] 4.5 Vpin8 Signal 0 Time TOCP Vpin7 Signal TDUR ETC. DRIVE IC Output Signal SCP Delay time Input Signal [V] 6.5 Vpin8 Signal 0 TSCP Time Vpin7 Signal TDUR Output Signal TSLOW 10 FAN8800 (KA3162) Typical Perfomance Characteristics 1. Vcc vs. Icc 14 2. Temperature vs. ICCST 16 13.5 ICCST[mA] 13 12.5 12 11.5 ICCST[mA] 12 8 4 13 14 15 16 17 18 0 -50 -25 0 25 50 75 100 125 Vcc[V] Temperature[
] ETC. DRIVE IC 3. Temperature vs. TPLH 400 4. Temperature vs. TPHL 400 300 300 TPLH[ns] 200 TPHL[ns] 100 125 200 100 100 0 -50 -25 0 25 50 75 0 -50 -25 0 25 50 75 100 125 Temperature[
] Temperature[
] 11 FAN8800 (KA3162) Typical Perfomance Characteristics (Continued) 5. Temperature vs. TSLOW 3.5 3 6. Temperature vs. ICHG 400 ISLOW [us] 2 1.5 1 0.5 0 -50 -25 0 25 50 75 100 125 ICHG[uA] 2.5 350 300 250 200 -50 -25 0 25 50 75 100 125 Temperature[
] Temperature[
] ETC. DRIVE IC 7. Temperature vs. TOCP 120 110 100 8. Temperature vs. TSCP 1.4 1.2 1 IOCP[us] 90 80 70 60 50 -50 -25 0 25 50 75 100 125 ISCP[us] 0.8 0.6 0.4 0.2 0 -50 -25 0 25 50 75 100 125 Temperature[
] Temperature[
] 12 FAN8800 (KA3162) Typical Application Circuits Single Power Supply Application Vlink Vlink L O A D FAN8800 1 TDUR Vcc DESAT 8 2 GND FAULT 7 Vcc Fault Output Signal Input 3 IN Vcc 6 + ETC. DRIVE IC 4 Vee OUT 5 Dual Power Supply Application Vlink FAN8800 1 TDUR DESAT 8 L O A D 2 GND Signal Input FAULT 7 Vcc Fault Output 3 IN Vcc 6 + 5 4 Vee Vee OUT + 13 FAN8800 (KA3162) Ordering Information Device FAN8800 Package 8-DIP Operating Temperature -40°C ~ +105°C ETC. DRIVE IC 14 FAN8800 (KA3162) ETC. DRIVE IC 15 FAN8800 (KA3162) ETC. DRIVE IC 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. www.fairchildsemi.com 12/28/99 0.0m 001 Stock#DSxxxxxxxx  1999 Fairchild Semiconductor Corporation 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.