VLA541-01R. IGBT Gate Driver

Transcription

1 VLA-R Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) Circuit Diagram V l V l - 3 Dimensions Inches Millimeters A.73 Max.. Max. B. Max.. Max. C.3 Max.. Max. D. Max.. Max. E.. F../-.../-. G.7±..±. H../-.../-. J. Max.. Max. K. Max. 3. Max. A E F D D Ω OPTO COUPLER INTERFACE LATCH GATE SHUTDOWN CIRCUIT Pins 3, 7, 9, : NC B G DETECT CIRCUIT TIMER & RESET CIRCUIT H J C K VCC CONTROL PIN FOR ttrip DETECT VO FAULT VEE Description: VLA-R is a hybrid integrated circuit designed for driving n-channel IGBT modules in any gate-amplifier application. This device is a fully isolated gate drive circuit with an optically isolated gate drive amplifier that provides an over-current protection function based on desaturation detection. Features: Electrical Isolation Between Input and Output via an Opto-coupler (V iso = V rms for Minute) Two Supply Drive Topology Built in Short-Circuit Protection with a pin for Fault Output CMOS Compatible Input Interface Applications: To Drive IGBT Modules for Inverter or AC Servo Systems Application. Recommended IGBT Modules: V CES = V Series up to A Class V CES = V Series up to A Class / Rev.

2 Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) VLA-R Absolute Maximum Ratings, T a = C unless otherwise specified Characteristics Symbol Rating Units Supply Voltage (DC) V CC V Supply Voltage (DC) V EE - V Input Signal Voltage (Applied Between; Pin 3 and Pin, % Duty Cycle, Pulse Width ms) V I - ~ 7 V Output Voltage (When Output Voltage is "H") V O V CC V Output Peak Current (Pulse Width μs) I OHP -3 A I OLP 3 A Isolation Voltage (Sine Wave Voltage Hz, for min.) V iso V rms Case Temperature T C 9 C Operating Temperature (No Condensation Allowable) T opr - ~ 7 C Storage Temperature (No Condensation Allowable) T stg - ~ * C Fault Output Current (Applied at Pin ) I FO ma Input Voltage at Pin (Applied at Pin ) V R V Electrical Characteristics, T a = C, V CC = V, V EE = -V, R G = Ω Characteristics Symbol Test Conditions Min. Typ. Max. Units Supply Voltage V CC Recommended Range 7 V Supply Voltage V EE Recommended Range -7 - V Pull-up Voltage on Primary Side V IN Recommended Range.7. V "H" Input Signal Current I IH Recommended Range 3 ma V IN = V, HC Drive 3 ma Switching Frequency f Recommended Range khz Gate Resistance R G Recommended Range 3 Ω "H" Output Voltage V OH 3 V "L" Output Voltage V OL - -9 V "L-H" Propagation Time I IH = 3mA.. μs "L-H" Rise Time t r I IH = 3mA.3 μs "H-L" Propagation Time I IH = 3mA.. μs "H-L" Fall Time t f I IH = 3mA.3 μs Timer t timer Between Start and Cancel ms (Under Input Sign "OFF") Fault Output Current I FO Applied at Pin, R =.7kΩ ma Controlled Time Detect Short-Circuit t trip Pin : V or more, Pin : Open. μs Controlled Time Detect Short-Circuit * t trip Pin : V or more, Pins -: pf 3 μs (Connective Capacitance) SC Detect Voltage V SC Collector Voltage of IGBT V * Differs from H/C condition. * The length of the capacitor from Pin to Pin should be less than cm. / Rev.

3 Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) VLA-R Operation of Protection Circuit. In the case where the gate voltage is "H" and the collector voltage is high, the hybrid IC will recognize a short-circuit condition and immediately reduce the gate voltage. Additionally, it will output an error signal ("L") which indicates that the protection circuit is operating at the same time from Pin.. The protection circuit resets if the input signal is "OFF" when the premised ~msec passed. ("OFF" period needs μm or more.) 3. When the output rises, the controlled time detect short-circuit (typically.μs) is set up so that the on-time of the IGBT can be secured properly. It is possible to adjust this time by connecting the capacitor (C trip ) between Pin and Pin. Operation Flow on Detecting Short Circuit START Application Circuit Example.7k V IN (V) C trip VLA 3 7μF HC ETC. 7μF D DZ (3V) Rg V CC V EE DETECTION OF SHORT-CIRCUIT V CC = V V EE = V C trip = ~7pF (Rough Guide, V, Ceramic) D : Fast Recovery Diode (t rr.μs) RPH (SanKen) etc. GATE SHUTDOWN TIMER START ALARM END OF TIMER YES NO ~ ms Precaution. Voltage compensation capacitors are expected to be located as close as possible to the hybrid IC.. D requires approximately the same voltage rating as the power modules. 3. If reverse recovery time of D is long, Pin is applied a high voltage. In that case, a zener diode between Pin and Pin is inserted for necessary protection as shown above.. In case Pin is operating, the C trip is expected to be wired as close as possible to Pin and Pin (less than cm). INPUT SIGN IS OFF NO Application Example of Single Power Supply.7k YES CLEAR ALARM ENABLE NOTE: Output voltage with protection circuit operating is about -lv EE l V V IN (V) 3 C trip VLA 7μF R D DZ (3V) Rg V CC 7μF DZ V CC = V DZ :.V, /W R :.7k ~ 3.3kΩ / Rev. 3

4 Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) VLA-R PROPAGATION DELAY TIME L-H, PROPAGATION DELAY TIME H-L,....., -T a CHARACTERISTICS V CC = V V EE = -V R G = Ω V IN = V LOAD = CMDY-NF - PROPAGATION DELAY TIME L-H, PROPAGATION DELAY TIME H-L,....., -V I CHARACTERISTICS V CC = V V EE = -V R G = Ω T a = C LOAD = CMDY-NF INPUT SIGNAL VOLTAGE, V I, (VOLTS) CONTROLLED TIME DETECT SHORT CIRCUIT, t trip, t trip t trip, t trip -T a CHARACTERISTICS V CC = V V EE = -V t trip (C trip = pf) t trip (C trip = pf) CONTROLLED TIME DETECT SHORT CIRCUIT, t trip 7 3 t trip -C trip CHARACTERISTICS V CC = V V EE = -V T a = C CONNECTIVE CAPACITANCE, C trip, (pf) (PIN: -) / Rev.

5 Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) VLA-R POWER DISSIPATION, P D, (WATTS) POWER DISSIPATION - AMBIENT TEMPERATURE CHARACTERISTICS (MAXIMUM RATING) R g = 3Ω (INCLUDING THE POWER DISSIPATION OF R g ) CONSUMPTION CURRENT, (ma) DISSIPATION CURRENT - SUPPLY VOLTAGE (PIN: -) INPUT SIGNAL L T a = C 3 SUPPLY VOLTAGE, (VOLTAGE) (PIN: -) Definition of Characteristics SWITCHING OPERATION OPERATION OF SHORT CIRCUIT PROTECTION INPUT V I t r t f 9% INPUT V I V O V V -V % t trip, ttimer V O % PIN V V V / Rev.