FOD8333 Input LED Drive, 2.5 A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing, Features.

Transcription

1 May 0 FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing, Features Input LED Drive Facilitates Receiving Digitally Encoded Signals from PWM Output Optically Isolated Fault-Sensing Feedback Active Miller Clamp to Shut Off IGBT During High dv/dt without Negative Supply Voltage High Noise Immunity Characterized by Common Mode Rejection kv/µs Minimum, V CM = 00 V PEAK. A Peak Output Current Driving Capability for Medium Power IGBT P-Channel MOSFETs at Output Stage Enable Output Voltage Swing Close to Supply Rail (Rail-to-Rail Output) Wide Supply Voltage Range: V to 0 V Integrated IGBT Protection Desaturation Detection Soft IGBT Turn-Off Automatic Fault Reset after Fixed Mute Time, Typically µs Under-Voltage Lockout (UVLO) with Hysteresis Fast Switching Speed Over Full Operating Temperature Range 0 ns Maximum Propagation Delay 00 ns Maximum Pulse Width Distortion Extended Industrial Temperate Range: 0 C to 00 C Safety and Regulatory Approvals UL,, V RMS for Minute DIN-EN/IEC0--:, V PEAK Working Insulation Voltage Rating,000 V PEAK Transient Isolation Voltage Rating mm Creepage and Clearance Distances Applications AC and Brushless DC Motor Drive Industrial Inverter Uninterruptible Power Supply Induction Heating Isolated IGBT/Power MOSFET Gate Drive Description The FOD is an advanced. A output current IGBT drive optocoupler capable of driving medium-power IGBTs with ratings up to,00 V and 0 A. It is suited for fast-switching driving of power IGBTs and MOSFETs in motor-control inverter applications and high-performance power systems. The FOD offers protection features necessary for preventing fault conditions that lead to destructive thermal runaway of IGBTs. The device utilizes Fairchild s proprietary Optoplanar coplanar packaging technology and optimized IC design to achieve reliable high isolation and high noise immunity, characterized by high common-mode rejection and power supply rejection specifications. The device is housed in a wide-body, -pin, small-outline, plastic package. The gate-driver channel consists of an aluminum gallium arsenide (AlGaAs) light-emitting diode (LED) optically coupled to an integrated high-speed driver circuit with a low-r DS(ON) MOSFET output stage. The fault-sense channel consists of an AlGaAs LED optically coupled to an integrated high-speed feedback circuit for fault sensing. Related Resources FOD. A Output Current, IGBT Drive Optocoupler with Desaturation, Isolated Fault Sensing FOD. A Output Current, IGBT Drive Optocoupler with Active Miller Clamp, Desaturation Detection, and Isolated Fault Sensing FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing, and Active Miller Clamp AN-00 Standard Gate-Driver Optocouplers 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

2 Truth Table Note: LED UVLO ( ) Detected? () X Active X HIGH LOW On Not Active Yes LOW LOW Off X X HIGH LOW On Not Active No HIGH HIGH. pin is connected to a pull-up resistor. Pin Configuration V LED V LED V LED V LED Pin Definitions Figure. Pin Configuration Pin # Name Description Ground for Fault-Sense Optocoupler Positive Supply Voltage ( V to V) for Fault Sense Optocoupler Fault-Sense Output Ground for Fault-Sense Optocoupler V LED- LED Cathode V LED LED Anode V LED LED Anode V LED- LED Cathode Negative Output Supply Voltage 0 Clamp Supply Voltage Gate-Drive Output Voltage Negative Output Supply Voltage Positive Output Supply Voltage Desaturation Voltage Input V LED LED Anode (Do not connect. Leave floating.) Output Supply Voltage/IGBT Emitter 0 Fairchild Semiconductor Corporation FOD Rev V LED FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

3 Block Diagram V LED- V LED V LED V LED- IC SHIELD LED SHIELD DRIVER MILLER CLAMP Figure. Functional Block Diagram 0 Fairchild Semiconductor Corporation FOD Rev..0. UVLO OUTPUT IC 0 V LED FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

4 Safety and Insulation Ratings As per DIN EN/IEC 0--, this optocoupler is suitable for safe electrical insulation only within the safety limit data. Compliance with the safety ratings must be ensured by means of protective circuits. Symbol Parameter Min. Typ. Max. Unit Installation Classifications per DIN VDE 00/. Table Rated Mains Voltage < 0 V RMS IIV Rated Mains Voltage < 00 V RMS IIV Rated Mains Voltage < 0 V RMS IIV Rated Mains Voltage < 00 V RMS IIV Rated Mains Voltage < 000 V RMS IIII Climatic Classification 0/00/ Pollution Degree (DIN VDE 00/.) CTI Comparative Tracking Index (DIN IEC /VDE 00 Part ) V PR Input-to-Output Test Voltage, Method b, V IORM x. = V PR, V peak 00% Production Test with t m = s, Partial Discharge < pc Input-to-Output Test Voltage, Method a, V IORM x. = V PR, V peak Type and Sample Test with t m = 0 s, Partial Discharge < pc V IORM Maximum Working Insulation Voltage V peak V IOTM Highest Allowable Over Voltage 000 V peak External Creepage.0 mm External Clearance.0 mm Insulation Thickness 0. mm Safety Limit Values Maximum Values in Failure; T Case Case Temperature 0 C Safety Limit Values Maximum Values in Failure; P S,INPUT Input Power 00 mw Safety Limit Values Maximum Values in Failure; P S,OUTPUT Output Power 00 mw R IO Insulation Resistance at T S, V IO = 00 V 0 Ω 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

5 Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. T A = ºC unless otherwise specified. Symbol Parameter Value Units T STG Storage Temperature -0 to ºC T OPR Operating Temperature -0 to 00 ºC T J Junction Temperature -0 to ºC T SOL Lead Solder Temperature (not certified for wave immersion) 0 for 0 s ºC Refer to reflow temperature profile on page PD I Input Power Dissipation ()() mw PD O Output Power Dissipation ()() 00 mw Gate Drive Channel I F(AVG) Average Input Current ma I F(PEAK) Peak Transient Forward Current.0 A (Pulse Width < µs) I OH(PEAK) Peak Output High Current ().0 A I OL(PEAK) Peak Output Low Current ().0 A V R Reverse Input Voltage.0 V Negative Output Supply Voltage () -0. to V VE Positive Output Supply Voltage -0. to ( ) V (PEAK) Gate Drive Output Voltage -0. to V Output Supply Voltage -0. to V V Desaturation Voltage to V I Desaturation Current 0 ma Active Miller Clamping Voltage -0. to V I CLAMP Peaking Clamping Sinking Current. A t R(IN), t F(IN) Input Signal Rise and Fall Time 00 ns Fault Sense Channel Positive Input Supply Voltage -0. to 0 V V Output Voltage -0. to 0 V I Output Current.0 ma Notes:. No derating required across temperature range.. Functional operation under these conditions is not implied. Permanent damage may occur if the device is subjected to conditions outside these ratings.. Derate linearly above C, free air temperature at a rate of. mw/ C.. Maximum pulse width = 0 µs.. This negative output supply voltage is optional. It is only needed when negative gate drive is implemented. 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

6 Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Symbol Parameter Min. Max. Unit T A Ambient Operating Temperature ºC I F(ON) Input Current (ON) ma V F(OFF) Input Voltage (OFF) V Supply Voltage V Total Output Supply Voltage 0 V Positive Output Supply Voltage () 0 ( ) V Negative Output Supply Voltage 0 V t PW Input Pulse Width 00 ns Note:. During power up or down, ensure that both the input and output supply voltages reach the proper recommended operating voltages to avoid any momentary instability at the output state. Isolation Characteristics Apply over all recommended conditions; typical value is measured at T A = ºC. Symbol Parameter Conditions Min. Typ. Max. Units V ISO Input-Output Isolation Voltage T A = C, Relative Humidity < 0%, t =.0 minute, I I-O 0 µa, 0 Hz ()()(0) R ISO Isolation Resistance V I-O = 00 V () 0, V RMS C ISO Isolation Capacitance V I-O = 0 V, Frequency =.0 MHz () pf Notes:. Device is considered a two-terminal device: pins to are shorted together and pins to are shorted together.., V RMS for -minute duration is equivalent to,0 V RMS for -second duration. 0. The input-output isolation voltage is a dielectric voltage rating per UL. It should not be regarded as an input-output continuous voltage rating. For the continuous working voltage rating, refer to equipment-level safety specification or DIN EN/IEC 0-- Safety and Insulation Ratings Table on page. 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

7 Electrical Characteristics Apply over all recommended conditions; typical value is measured at = V, = 0 V, = 0 V, and T A = C; unless otherwise specified. Symbol Parameter Conditions Min. Typ. Max. Units Figure Gate Drive Channel V F Input Forward Voltage I F = 0 ma.0..0 V Δ(V F /T A ) Temperature Coefficient -. mv/ºc of Forward Voltage BV R Input Reverse I R = 0 µa V Breakdown Voltage C IN Input Capacitance f = MHz, V F = 0 V 0 pf I FLH Threshold Input Current, I O = 0 ma, > V..0 ma 0 Low to High V FHL Threshold Input Voltage, I O = 0 ma, < V 0. V High to Low I OH High Level Output Current = V, I F = 0 ma A, 0, = V, I F = 0 ma () -. A I OL I OLF H Low Level Output Current Low Level Output Current During Fault Condition High Level Output Voltage = V, I F = 0 ma A,, = V,. A I F = 0 ma () = V 0 0 ma I F = 0 ma,.0 0. V, 0, I O = 00 ma ()()() L Low Level Output Voltage I F = 0 ma, I O = 00 ma V,, I DDH I DDL I EL I EH I CHG I DSCHG High Level Supply Current Low Level Supply Current Low Level Supply Current High Level Supply Current Blanking Capacitor Charge Current Blanking Capacitor Discharge Current = Open, I O = 0 ma..0 ma,, = Open, I O = 0 ma..0 ma,, ma ma V = V ()() ma, V = V 0 0 ma V UVLO Under-Voltage Lockout I F = 0 ma, > V 0... V 0 V UVLO- Threshold () I F = 0 ma, < V. 0.. V UVLO HYS Under-Voltage Lockout.0 V Threshold Hysteresis V Threshold () > V ULVO.0.. V, _THRES Clamping Threshold.0 V Voltage I CLAMPL Clamp Low Level Sinking Current =. V 0..0 A, 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

8 Electrical Characteristics (Continued) Apply over all recommended conditions; typical value is measured at = V, = 0 V, = 0 V, and T A = C; unless otherwise specified. Symbol Parameter Conditions Min. Typ. Max. Units Figure Fault Feedback Channel I CCH I CCL I H I L High Level Supply Current Low Level Supply Current Logic High Output Current Logic Low Output Current I F = 0 ma, V = Open, = V I F = ma, V = Open, = V µa 0 00 µa V = =. V µa V = 0. V, =. V. ma, Notes:. Maximum pulse width = 0 µs, maximum duty cycle = 0.%.. Minimum pulse width =. ms, minimum duty cycle =.%.. H is measured with the DC load current in this testing (maximum pulse width = ms, maximum duty cycle = 0%). When driving capacitive loads, H approaches as I OH approaches zero units.. Positive output supply voltage ( ) should be at least V to ensure adequate margin in excess of the maximum under-voltage lockout threshold, V UVLO, of. V.. When > V UVLO and the output state is allowed to go HIGH, the -detection feature is active and provides the primary source of IGBT protection. UVLO is needed to ensure detection is functional.. The blanking time, t BLANK, is adjustable by an external capacitor (C BLANK ), where t BLANK = C BLANK (V / I CHG ). 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

9 Switching Characteristics Apply over all recommended conditions; typical value is measured at = V, = 0 V, = 0 V, and T A = C; unless otherwise specified. Symbol Parameter Conditions Min. Typ. Max. Units Figure t PHL Propagation Delay to Logic Low Output () Rg = 0 Ω, Cg =0 nf, f = 0 khz, 00 0 ns,, 0,, t Duty Cycle = 0%, PLH Propagation Delay to Logic ns High Output () I F = 0 ma, = 0 V () PWD Pulse Width Distortion, 00 ns t PHL t PLH (0) PDD Skew Propagation Delay Difference Between Any Two Parts or Channels, ( t PHL t PLH ) () -0 0 ns t R Output Rise Time 0 ns (0% to 0%) t F Output Fall Time (0% to 0%) 0 ns t (LOW) Sense to Low Propagation Delay () Rg = 0 Ω, Cg = 0 nf, = 0 V 0. µs t (C = 00pF, (0%) Sense to 0% Delay () R F =. kω, =. V) µs, t (0%) Sense to 0% Delay (), t () Sense to Low Level Signal Delay () t (MUTE) Input Mute 0 µs t UVLO ON UVLO Turn-On Delay () = 0 V in.0 ms.0 µs t UVLO OFF UVLO Turn-Off Delay () Ramp.0 µs t GP Time-to-Good Power () = 0 to 0 V in 0 µs Ramp CM H Common Mode Transient Immunity at Output High CM L Common Mode Transient Immunity at Output Low T A = C, = V, = V, = Ground, C F = pf, R F =. kω, V CM = 00 V PEAK () T A = C, = V, = V, = Ground, C F = pf, R F =. kω, V CM = 00 V PEAK () µs,, 0 kv/µs, 0 kv/µs 0, Notes:. This load condition approximates the gate load of a 00 V / 0 A IGBT.. Propagation delay t PHL is measured from the 0% level on the falling edge of the input pulse to the 0% level of the falling edge of the signal.. Propagation delay t PLH is measured from the 0% level on the rising edge of the input pulse to the 0% level of the rising edge of the signal. 0. PWD is defined as t PHL t PLH for any given device.. The difference between t PHL and t PLH between any two parts under same operating conditions with equal loads.. The length of time the threshold must be exceeded before begins to go LOW. This is supply voltage dependent. 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

10 . The time from threshold is exceeded until the output goes LOW.. The length of time the threshold must be exceeded before begins to go LOW and the output begins to go LOW.. The UVLO turn-on delay, t UVLO ON, is measured from the V UVLO threshold level of the rising edge of the output supply voltage ( ) to the V level of the rising edge of the signal.. The UVLO turn-off delay, t UVLO OFF, is measured from the V UVLO threshold level of the falling edge of the output supply voltage ( ) to the V level of the falling edge of the signal.. The time to good power, t GP, is measured from the V UVLO threshold level of the rising edge of the output supply voltage ( ) to the V level of the rising edge of the signal.. Common-mode transient immunity at output HIGH state is the maximum tolerable negative dvcm / dt on the trailing edge of the common-mode pulse, V CM, to assure the output remains in HIGH state (i.e., > V or V > V).. Common-mode transient immunity at output LOW state is the maximum positive tolerable dvcm / dt on the leading edge of the common-mode pulse, V CM, to ensure the output remains in LOW state (i.e., <.0 V or V < 0. V). 0 Fairchild Semiconductor Corporation FOD Rev FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

11 Timing Diagrams I F I F V.V t BLANK t PLH t () t R Figure. t PLH, t PHL, t R, and t F Timing Diagram t (LOW) 0% t (0%) 0% t (0%) 0% 0% Figure. Definitions for, and Timing Waveforms 0 Fairchild Semiconductor Corporation FOD Rev..0. t PHL t (MUTE) t F 0% 0% 0% 0% Automatic Reset after Mute Time FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

12 Typical Performance Characteristics I F INPUT FORWARD CURRENT (ma) L LOW LEVEL OUTPUT VOLTAGE (V) IOL LOW LEVEL OUTPUT CURRENT (A) C C -0 C V F INPUT FORWARD VOLTAGE (V) Figure. Input Forward Current (I F ) vs. Voltage (V F ) L = V L = V I LED = 0 A = 0 V T A TEMPERATURE ( C) Figure. Low Level Output Current (I OL ) vs. Temperature I LED = 0 A = 0 V I OL = 00 ma T A TEMPERATURE ( C) Figure. Low Level Output Voltage (L ) vs. Temperature 0 Fairchild Semiconductor Corporation FOD Rev..0. HIGH LEVEL OUTPUT VOLTAGE (V) VOH VDD VOH HIGH LEVEL OUTPUT VOLTAGE (V) IOH HIGH LEVEL OUTPUT CURRENT (A) I LED = 0 ma = 0 V T A TEMPERATURE ( C) H = V H = V Figure. High Level Output Current (I OH ) vs. Temperature -0. I LED = 0 ma = 0 V I OH = -00 ma T A TEMPERATURE ( C) Figure. High Level Output Voltage (H ) vs. Temperature 00 C I LED = 0 ma = 0 V I OH HIGH LEVEL OUTPUT CURRENT (A) T A = -0 C C Figure 0. High Level Output Voltage (H ) vs. High Level Output Current (I OH ) FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

13 Typical Performance Characteristics (Continued) VOL LOW LEVEL OUTPUT VOLTAGE (V) IDD OUTPUT SUPPLY CURRENT (ma) V THRESHOLD (V) I OL LOW LEVEL OUTPUT CURRENT (A) Figure. Low Level Output Voltage (L ) vs. Low Level Output Current (I OL ).0..0 T A = 00 C I LED = 0 A (I DDL ) / 0 ma (I DDH ) = 0 V = Open I LED = 0 A = 0 V I DDL I DDH OUTPUT SUPPLY VOLTAGE (V) C -0 C Figure. Output Supply Current (I DD ) vs. Voltage ( ) I LED = 0 ma = 0 V T A TEMPERATURE (C) Figure. Threshold (V ) vs. Temperature 0 Fairchild Semiconductor Corporation FOD Rev..0. IDD OUTPUT SUPPLY CURRENT (ma) ICHG BLANKING CAPACITOR CHARGE CURRENT (ma) ICLAMPL CLAMP LOW LEVEL SINKING CURRENT (A).0... I DDL I DDH OH. I LED = 0 A (I DDL ) / 0 ma (I DDH ) = 0 V = Open T A TEMPERATURE ( C) Figure. Output Supply Current (I DD ) vs. Temperature I LED = 0 ma = 0 V V = V T A TEMPERATURE ( C) Figure. Blanking Capacitor Charge Current (I CHG ) vs. Temperature 0. I LED = 0 ma = 0 V =.V T A TEMPERATURE ( C) Figure. Clamp Low Level Sinking Current (I CLAMPL ) vs. Temperature FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

14 Typical Performance Characteristics (Continued) I L LOGIC LOW OUTPUT CURRENT (ma) tp PROPAGATION DELAY (ns) tp PROPAGATION DELAY (ns) =. V I LED = 0 ma Figure. Logic Low Output Current (I L ) vs. Voltage (V L ) 0 I LED = 0 ma f = 0 khz 0% Duty Cycle R g = 0 Ω, C g = 0 nf V L LOGIC LOW OUTPUT VOLTAGE (V) SUPPLY VOLTAGE (V) t PLH t PHL Figure. Propagation Delay (t P ) vs. Supply Voltage ( ) I LED = 0 ma f = 0 khz 0% Duty Cycle = 0 V R g = 0 Ω 00 C C -0 C t PLH t PHL C g LOAD CAPACITANCE (nf) Figure. Propagation Delay (t P ) vs. Load Capacitance (C g ) Figure. Propagation Delay (t P ) vs. Temperature 0 Fairchild Semiconductor Corporation FOD Rev..0. tp PROPAGATION DELAY (ns) tp PROPAGATION DELAY (ns) t (0%) SENSE TO 0% VO DELAY (µs) t PLH t PHL 0 I LED = 0 ma f = 0 khz 0% Duty Cycle = 0 V R g = 0 Ω, C g = 0 nf I LED = 0 ma f = 0 khz 0% Duty Cycle = 0 V C g = 0 nf T A TEMPERATURE ( C) R g LOAD RESISTANCE (Ω) Figure 0. Propagation Delay (t P ) vs. Load Resistance (R g ) = 0 V = V 0. = V / 0 V I LED = 0 ma R g = 0 Ω, C g = 0 nf T A TEMPERATURE ( C) t PLH t PHL Figure. Sense to 0% Delay (t (0%) ) vs. Temperature FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

15 Typical Performance Characteristics (Continued) t (0%) SENSE TO 0% V t O DELAY (µs) (0%) SENSE TO 0% DELAY (µs) t (MUTE) INPUT MUTE (µs) = 0 V = V = V / 0 V I LED = 0 ma R g = 0 Ω, C g = 0 nf T A TEMPERATURE ( C) Figure. Sense to 0% Delay (t (0%) ) vs. Temperature C g LOAD CAPACITANCE (nf) Figure. Sense to 0% Delay (t (0%) ) vs. Load Capacitance (C g ) = V / 0 V I LED = 0 ma R g = 0 Ω = V / 0 V I LED = 0 ma R g = 0 Ω, C g = 0 nf = 0 V = V T A TEMPERATURE ( C) Figure. Input Mute (t (MUTE) ) vs. Temperature = V / 0 V I LED = 0 ma C g = 0 nf R g LOAD RESISTANCE (Ω) Figure. Sense to 0% Delay (t (0%) ) vs. Load Resistance (R g ) 0 Fairchild Semiconductor Corporation FOD Rev..0. t (0%) SENSE TO 0% VO DELAY (µs) t () SENSE TO LOW LEVEL SIGNAL DELAY (µs) = 0 V = 0 V = V =. V =. V 00 C 00 C 0. 0 R F LOAD RESISTANCE (kω) C -0 C C -0 C Figure. Sense to Low Level Fault Signal Delay (t () ) vs. Fault Load Resistance (R F ) t GP TIME TO GOOD POWER (µs) = 0 V I LED = 0 ma T A TEMPERATURE ( C) Figure. Time-to-Good Power (t GP ) vs. Temperature FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

16 Typical Performance Characteristics (Continued) t GP TIME TO GOOD POWER (µs) I LED = 0 ma T A = C OUTPUT SUPPLY VOLTAGE (V) Figure. Time-to-Good Power (t GP ) vs. Output Supply Voltage ( ) 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

17 Test Circuits 0A Period = ms PW = 0μs V 0mA 0V 0mA V IN V LED V LED V LED V LED FOD V LED 0 Figure 0. Threshold Input Current Low-to-High (I FLH ) Test Circuit V LED V LED V LED V LED FOD V LED 0 Figure. Threshold Input Voltage High-to-Low (V FHL ) Test Circuit R M V LED V LED V LED V LED FOD V LED 0 Figure. High Level Output Current (I OH ) Test Circuit 0 Fairchild Semiconductor Corporation FOD Rev..0. I OH 0V 0V µf 0V µf FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

18 Test Circuits (Continued) Period = ms PW =.ms 0mA V IN 0mA 0mA V IN.kΩ V R M R M V LED V LED V LED V LED FOD V LED 0 Figure. Low Level Output Current (I OL ) Test Circuit Figure. Low Level Output Current During Fault Condition (I OLF ) Test Circuit V LED V LED V LED V LED V LED V LED V LED V LED FOD FOD V LED V LED 0 H 0 Figure. High Level Output Voltage (H ) Test Circuit 0 Fairchild Semiconductor Corporation FOD Rev..0. I OL 0nF 00pF 0Ω I OLF µf V 00mA 0V 0V µf 0V FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

19 Test Circuits (Continued) 0mA V LED V LED V LED V LED FOD V LED L Figure. Low Level Output Voltage (L ) Test Circuit 0 Figure. High Level Supply Current (I DDH ), High Level Supply Current (I EH ) Test Circuit V LED V LED V LED V LED V LED V LED V LED V LED FOD FOD V LED V LED 0 0 Figure. Low Level Supply Current (I DDL ), Low Level Supply Current (I EL ) Test Circuit 0 Fairchild Semiconductor Corporation FOD Rev..0. I EH I DDH I EL I DDL 00mA 0V 0V 0V FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

20 Test Circuits (Continued) 0mA.kΩ V LED V LED V LED V LED FOD V LED 0 V I CHG I DSCHG Figure. Threshold (V ), Blanking Capacitor Charge Current (I CHG ), Blanking Capacitor Discharge Current (I DSCHG ) Test Circuit 0mA V LED V LED V LED V LED FOD V LED 0 Figure 0. Under-Voltage Lockout Threshold (V UVLO / V UVLO- ), Under-Voltage Lockout Threshold Hysteresis (UVLO HYS ) Test Circuit 0mA 0A V LED V LED V LED V LED FOD V LED Figure. Clamping Threshold Voltage (_THRES ) Test Circuit 0 Fairchild Semiconductor Corporation FOD Rev V 0V V 0Ω 0 V TCLAMP V V 0V 0V V UVLO V UVLO 0V 0V FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

21 Test Circuits (Continued) V V V LED V LED V LED V LED I CLAMPL Figure. Clamp Low Level Sinking Current (I CLAMPL ) Test Circuit I CCH Figure. High Level Supply Current (I CCH ) Test Circuit I CCL V V V LED V LED V LED V LED V LED V LED V LED V LED FOD FOD FOD Figure. Low Level Supply Current (I CCL ) Test Circuit 0 Fairchild Semiconductor Corporation FOD Rev..0. V LED V LED V LED V 0V ma FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

22 Test Circuits (Continued).V.V I H.V V L.mA 0mA f = 0kHz DC = 0% V LED V LED V LED V LED Figure. High Level Output Current (I H ) Test Circuit Figure. Low Level Output Voltage (V L ) Test Circuit V IN R M V LED V LED V LED V LED V LED V LED V LED V LED FOD FOD FOD Figure. Propagation Delay (t PLH, t PHL ), Rise Time(t R ), Fall Time (t F ), Pulse Width Distortion (PWD) Test Circuit 0 Fairchild Semiconductor Corporation FOD Rev..0. V LED V LED V LED Ω 0nF 0V 0mA FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

23 Test Circuits (Continued) 0mA V IN.kΩ R M V LED V LED V LED V LED FOD V LED Figure. Sense Delay (t (0%) ), t (0%) ), t (LOW) ), Sense to Low Level Signal Delay (t () ), Input Mute (t (MUTE) ) Test Circuit V V 0mA 0 Figure. Under-Voltage Lockout Delay (t UVLO ), Time-to-Good-Power (t GP ) Test Circuit.kΩ pf or nf 0Ω V LED V LED V LED V LED V LED V LED V LED V LED V CM FOD FOD V LED V LED 0 0 Figure 0. Common-Mode Low (CML) LED-Off Test Circuit 0 Fairchild Semiconductor Corporation FOD Rev..0. 0nF 00pF 0Ω V 0V 0V t UVLO t r = t f = ms TGP t r = t f = 0μs Scope 0Ω 0nF 0.μF V FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

24 Test Circuits (Continued) V V V.kΩ pf or nf 0Ω V LED V LED V LED V LED V CM FOD Figure. Common-Mode High (CMH) LED-On Test Circuit Scope.kΩ pf or nf 0Ω Figure. Common-Mode High (CMH) LED-Off Test Circuit.kΩ Scope pf or nf 0Ω V LED V LED V LED V LED V LED V LED V LED V LED FOD V CM FOD V CM Figure. Common-Mode High (CML) LED-On Test Circuit 0 Fairchild Semiconductor Corporation FOD Rev..0. V LED V LED V LED Scope 0Ω 0nF 0Ω 0nF 0Ω 0.μF 0.μF 0nF 0.μF V V V FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

25 Application Information Micro Controller R LED Functional Description The functional behavioral of FOD is illustrated by the detailed internal schematic shown in Figure. V LED, V LED,, R F C F V LED V LED V LED V LED V LED FOD V LED 0 Figure. Recommended Application Circuit Pulse Generator Figure. Detailed Internal Behavioral Schematic Figure and the timing diagrams explain the interaction and sequence of internal and external signals. 0 Fairchild Semiconductor Corporation FOD Rev..0. R G Delay C BLANK D 00Ω Q V CE Q V CE UVLO Comparator V UVLO 0μA V x V 0x 0 x HVDC -Phase AC HVDC FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

26 I F Normal Operation Figure. Operating Relationsip Among Desaturation Voltage (), Fault Output (), and Reset Conditions. LED Input and Operation Explanation FOD is an advanced IGBT gate-drive optocoupler capable of driving most 00 V / 0 A IGBTs and power MOSFETs in motor control and inverter applications. The following section describes driving IGBT, but is also applicable to driving MOSFET. Adjust the supply based on the gate threshold voltages. Critical protection features and controls are incorporated to simplify the design and improve reliability. The device includes an IGBT desaturation detection protection and a status output. This highly integrated device consists of two highperformances AlGaAs LEDs and two integrated circuits. LED directly controls the isolated gate driver IC output, while the returned optical signal path is transmitted by LED, which reports the fault status through the opencollector fault-sense IC output. The control LED input and the fault-sense IC output can be connected to a standard. V / V DSP or microcontroller. The gate driver output can be connected to the gate of the power devices on the high-voltage side. A typical recommended application is shown in Figure. A typical shunt LED drive can be used to improve noise immunity. The LED is connected in parallel with the bipolar transistor switch, creating a current shunt drive. Common-mode transients from the load coupling via the package capacitance can be coupled into a low-impedance path, either the conducting LED or the on resistance of the conducting bipolar transistor, increasing its noise immunity. During normal operation, when no fault is detected, LED controls the gate driver output. is set to HIGH when the current flowing from the anode to the cathode Fault Condition Blanking Time.V V Automatic Reset (LED) is greater than I FLH and the forward voltage V F is greater than V F (MIN). The timing relationship between the LED input and gate driver output is illustrated in Figure. When a fault is detected, the gate driver ouptut IC immediately enters soft turn-off mode, where the output voltage changes slowly from HIGH to LOW state. This also disables the gate control input on the gate driver IC side for a minimum mute time, t (MUTE), of 0 µs. The output, which is open-collector configuration, is latched to LOW state to report a fault status to the microcontroller. It is only reset or pulled back to HIGH automatically after the fixed mute time, t (MUTE). The active Miller clamp function avoids the need of negative gate driving in most applications and allows the use of a simple bootstrap supply for the high-side driver.. Gate Driver Output A pair of PMOS and NMOS make up the output driver stage, which facilitates close to rail-to-rail output swing. This feature allows tight control of gate voltage during on-state and short-circuit conditions. The output driver can typically sink. A and source. A at room temperature. Due to the low R DS(ON) of the MOSFETs, the power dissipation is lower than bipolartype driver output stages. The absolute maximum rating of the output peak current, I O(PEAK), is A. Careful selection of the gate resistor, R G, is required to avoid violation of this rating. For charging and discharging, the R G value is approximated by: R G = E L / I OL(PEAK) () 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

27 As shown in Figure, the gate driver output is influenced by signals from the photodetector circuitry, the UVLO comparator, and the signals. Under no-fault condition, normal operation resumes while the supply voltage is above the UVLO threshold and the output of the photodetector drives the MOSFETs of the output stage. The logic circuitry of the output stage ensures that the push-pull devices are never turned ON simultaneously. When the output of the photodetector is HIGH, output is pulled to HIGH state by turning on the PMOS. When the output of the photodetector is LOW, is pulled to LOW state by turning on the 0XNMOS. When supply goes below V UVLO, which is the designated ULVO threshold at the comparator, is pulled to LOW state regardless of photodetector output. When is HIGH and desaturation is detected, turns off slowly as it is pulled LOW by the XNMOS device. The input to the fault-sense circuitry is latched to HIGH state and turns on the LED. The fault-sense signal remains in HIGH state until LED is switched from LOW to HIGH. When goes below V, the 0XNMOS device turns on, clamping the IGBT gate firmly to.. Desaturation Protection, Output and RESET Desaturation detection protects the IGBT in short circuit by monitoring the collector-emitter voltage of the IGBT when it s turned on. When the pin voltage goes above the threshold voltage, a short-circuit condition is detected and the driver output stage executes a soft IGBT turn-off and is eventually driven LOW. This sequence is illustrated in Figure. The opencollector output is triggered active LOW to report a desaturation error. The gate driver output is muted for minimum of 0 µs. All input LED signals are ignored during the mute period to allow the driver to completely soft shutdown the IGBT. The fault mechanism is reset automatically after the t (MUTE) (see Figure ). During OFF state of the IGBT, or if is LOW, the fault sense circuitry is disabled to prevent false fault signals. The comparator should be disabled for a short period (blanking time) before the IGBT turns on to allow the collector voltage to fall below the threshold. This blanking period protects against false triggering of the while the IGBT is turning on. The blanking time is controlled by the internal charge current, the voltage threshold, and the external capacitor (capacitor between and pin). The nominal blanking time can be calculated using external capacitance (C BLANK ), threshold voltage (V ), and charge current (I CHG ): t BLANK = C BLANK x V / I CHG () With a recommended 00 pf capacitor, the nominal blanking time is: 00 pf x. V / 0 µa =. µs. Soft Turn-Off The soft turn-off feature ensures the safe shutdown of the IGBT under fault condition. The gate-driver voltage turns off the IGBT in a controlled slow manner. This reduces the voltage spike on the collector of the IGBT. Without this, the IGBT would see a heavy spike on the collector, resulting in a permanent damage to the device when it s turned off immediately. The is pulled to LOW slowly in µs.. Under-Voltage Lockout (UVLO) Under-Voltage detection prevents the application of insufficient gate voltage to the IGBT. This could be dangerous, as it would drive the IGBT out of saturation and into the linear operation where losses are very high and the IGBT quickly overheats. This feature ensures proper operation of the IGBTs. The output voltage,, remains LOW irregardless of the inputs, as long as the supply voltage,, is less than V UVLO during power up. When the supply voltage falls below V UVLO-, goes LOW, as illustrated in Figure.. Active Miller Clamp Function An active Miller clamp feature allows the sinking of the Miller current to ground during a high-dv/dt situation. Instead of driving the IGBT gate to a negative supply voltage to increase the safety margin, the device has a dedicated pin to control the Miller current. During turn-off, the gate voltage of the IGBT is monitored and the output is activated when the gate voltage goes below V (relative to ). The Miller clamp NMOS transistor is then turned on and provides a low resistive path for the Miller current, which helps prevent a self-turn-on due to the parasitic Miller capacitor in power switches. The clamp voltage is. V, typical for a Miller current up to 00 ma. In this way, the function does not affect the turnoff characteristic. It helps to clamp the gate to the low level throughout the turn-off time. During turn-on, where the input of the driver is activated, the function is disabled or opened. 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

28 I FLH I F. Time to Good Power During fast power up (e.g. bootstrap power supply), the LED is off and the output of the gate driver should be in the LOW or OFF state. Sometimes, race conditions exist that cause the output to follow until all of the circuits in the output IC stabilize. This condition can result in output transitions or transients that are coupled to the driven IGBT. These glitches can cause the high- and low-side IGBTs to conduct shoot-through current that can damage the power semiconductor devices. Fairchild has introduced a initial turn-on delay, called time to good power. This delay, typically µs, is only present during the initial power-up of the device. If the LED is ON during the initial turn-on activation, low-tohigh transition at the output of the gate driver only occurs µs after the power is applied.. Dual Supply Operation Negative Bias at The IGBT s off-state noise immunity can be enhanced by providing a negative gate-to-emitter bias when the IGBT is in OFF state. This static off-state bias can be supplied by connecting a separate negative voltage source between the (pin ) and (pin and pin ). The primary ground reference is the IGBT s emitter connection, (pin ). The under-voltage lockout threshold and desaturation voltage detection are referenced to the IGBT s emitter ( ) ground. The negative voltage supply at appears at the gate drive output,, when in LOW state. When the input drives the output HIGH, the output voltage,, has the potential of the and. Proper power supply bypass capacitors are added to provide paths for the instantaneous gate charging and discharging currents. The Schottky diode is recommended connected between and to protect against a reverse voltage greater than 0. V. The (pin 0) should be connected to when not in use. Figure. Time to Good Power V UVLO V UVLO. Pin Protection During turn off, especially with inductive load, a large instantaneous forward-voltage transient can appear on the freewheeling diode of the IGBT. A large negative voltage spike on the pin can result and draw substantial current out of the gate driver IC if there is not current-limiting resistor. To limit this current, a 00 Ω to kω resistor should be inserted in series with the diode. The added resistance does not change the threshold or the blanking time. The diode protects the gate driver IC from high voltages when the IGBT is turning off, while allowing a forward I CHG current of 0 µa to be conducted to sense the IGBT s saturated collector to emitter voltage when the IGBT is turned on. A fast-recovery diode, t rr below ns, with sufficient reverse-voltage rating, should be used. Fairchild offers many of these ultra-fast diodes/ rectifiers, such as ESJ-00V, with t rr at ns. If two diodes or more are used, the required maximum reverse voltage can be reduced by half or accordingly. This modifies the trigger level for a fault condition. The sum of the diode forward-voltage and the IGBT collector-emitter V CE voltage form the voltage at the pin. The trigger level for a fault condition given by: V CE@ = V n x V F () where n is the number of the diodes. 0. Pull-Up Resistor on Pin The pin is an open-collector output and can be connected as wire-or operation with other types of protection (e.g., over-temperature, over-voltage, overcurrent) to alert the microcontroller. Being an opencollector output, it requires a pull-up resistor to provide a normal high output voltage level. This resistor value must be properly considered based on various IC interface requirements. The sinking current capability is given by I L. 0 Fairchild Semiconductor Corporation FOD Rev..0. t GP FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

29 . Increasing the Output Drive Current Using an External Booster Stage If larger gate drive capability is needed for large IGBT modules or parallel operation, an output booster stage may be added to driver for optimum performance. FOD V LED 0 A possible implementation is by a discrete NPN/PNP totem-pole configuration. These booster transistors should be fast switching and have sufficient current gain to deliver the desired peak output current. Figure. Output Booster Stage for Increased Output Drive Current 0 Fairchild Semiconductor Corporation FOD Rev..0. R G C BLANK D 00Ω FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

30 Ordering Information Part Number Package Packing Method FOD SO -Pin Tube (0 units per tube) FODR SO -Pin Tape and Reel (0 units per reel) FODV SO -Pin, DIN EN/IEC 0-- Option Tube (0 units per tube) FODRV SO -Pin, DIN EN/IEC 0-- Option Tape and Reel (0 units per reel) All packages are lead free per JEDEC: J-STD-00B standard. Marking Information Definitions D X YYKK Fairchild logo Device number, e.g., for FOD DIN EN/IEC0-- Option (only appears on component ordered with this option) (pending approval) Plant code, e.g., D Alphabetical year code, e.g., E for 0 Two-digit work week ranging from 0 to Lot traceability code Package assembly code, e.g., J 0 Fairchild Semiconductor Corporation FOD Rev V J FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

31 Reflow Profile Temperature ( C) TP TL T smax T smin Max. Ramp-Up Rate = C/s Max. Ramp-Down Rate = C/s Preheat Area Time C to Peak Time (seconds) Figure. Relow Profile Profile Freature Pb-Free Assembly Profile Temperature Minimum (T smin ) 0 C Temperature Maximum (T smax ) 00 C Time (t S ) from (T smin to T smax ) 00 seconds Ramp-up Rate (t L to t P ) C/second maximum Liquidous Temperature (T L ) C Time (t L ) Maintained Above (T L ) 00 seconds Peak Body Package Temperature 0 C 0 C / C Time (t P ) within C of 0 C 0 seconds Ramp-Down Rate (T P to T L ) C/second maximum Time C to Peak Temperature minutes maximum 0 Fairchild Semiconductor Corporation FOD Rev..0. ts tl tp FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

32 Physical Dimensions Figure 0. L SOIC Wide Body Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor s online packaging area for the most recent package drawings: For current packing container specifications, visit Fairchild Semiconductor s online packaging area: Carrier Tape Specification (SOIC-L OPTO R & Rption) NOTES: UNLESS OTHERWISE SPECIFIED A) DRAWING REFERS TO JEDEC MS-0, VARIATION AA. B) ALL DIMENSIONS ARE IN MILLIMETERS. C) DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH AND TIE BAR PROTRUSIONS D) DRAWING CONFORMS TO ASME Y.M- E) LAND PATTERN STANDARD: SOICP00X-N F) DRAWING FILE NAME: MKT-MFREV For current carrier tape specifications, visit Fairchild Semiconductor s online packaging area: 0 Fairchild Semiconductor Corporation FOD Rev..0. FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing,

33 FOD Input LED Drive,. A Output Current, IGBT Drive Optocoupler with Desaturation Detection, Isolated Fault Sensing, 0 Fairchild Semiconductor Corporation FOD Rev..0.