VLA-R Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) 9-77 www.pwrx.com Circuit Diagram V l V l - 3 E F D D Ω OPTO COUPLER Dimensions Inches Millimeters A.73 Max.. Max. B. Max.. Max. C.33 Max.. Max. D. Max.. Max. E.. F../-.../-. G.7±..±. H../-.../-. J. Max.. Max. K. Max. 3. Max. A INTERFACE LATCH Pin 3 : NC GATE SHUTDOWN CIRCUIT B G DETECT CIRCUIT TIMER & RESET CIRCUIT H J K C VCC CONTROL PIN FOR ttrip DETECT VO FAULT 7 CONTROL PIN FOR FALL TIME 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 Variable Fall Time on Activity of Short-circuit Protection TTL 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 V CES = 7V Series up to A Class / Rev.
Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) 9-77 www.pwrx.com 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 - A I OLP 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 - ~ C Storage Temperature (No Condensation Allowable) T stg - ~ * C Fault Output Current (Applied at Pin ) I FO ma Input Voltage at Pin V R V Electrical Characteristics, T a = C, V CC = V, V EE = -V, R G = 3.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 Switching Frequency f Recommended Range khz Gate Resistance R G Recommended Range Ω "H" Input Signal Current I H V IN = V, HC Drive 3 ma "H" Output Voltage V OH 3 V "L" Output Voltage V OL - -9 V "L-H" Propagation Time t PLH I IH = 3mA.. μs "L-H" Rise Time t r I IH = 3mA.3 μs "H-L" Propagation Time t PHL 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 "L") 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 wiring capacitor from Pin to Pin should be less than cm. / Rev.
Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) 9-77 www.pwrx.com VLA-R Definition of Characteristics SWITCHING OPERATION SHORT CIRCUIT PROTECTION INPUT V I t r t f 9% INPUT V I V O V V -V % t trip, ttimer V O t PLH t PHL % PIN V V V 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 a capacitor (C trip ) between Pin and Pin. Adjustment of Output Fall Time When the protection circuit is operating, the speed of reverse bias can be adjusted by connecting a capacitor (Cs) between Pin and Pin 7. INPUT SIGNAL 9% % t t Operation Flow on Detecting Short Circuit START VOLTAGE (PIN ) % DETECTION OF SHORT-CIRCUIT GATE SHUTDOWN TIMER START ALARM END OF TIMER YES NO ~ ms FALL TIME ON ACTIVITY OF SHORT-CIRCUIT PROTECTION t, t 3 t, t vs CS CHARACTERISTICS V CC = V V EE = -V T a = C t t INPUT SIGN IS OFF NO..... CONNECTIVE CAPACITANCE, C S, (µf) PINS -7 YES CLEAR ALARM ENABLE NOTE: Output voltage with protection circuit operating is about -lv EE l V / Rev. 3
Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) 9-77 www.pwrx.com VLA-R Application Circuit Example.7kΩ Application Example of Single Power Supply.7kΩ HC ETC. f = khz D.F. = % V IN = V V IN 3 C trip VLA μf μf V CC = V V EE = V C trip = ~7pF (Rough Guide) D : Fast Recovery Diode (t rr.μs) RPH (SanKen) etc. D DZ (3V) Rg V CC V EE VIN (V) 3 VLA μf Rg R C rev DZ DZ (3V) V CC V CC = V C rev = µf R =.7kΩ ~ 3.3kΩ NOTE: Do not apply the ON signal until t = R x Crev(s) has passed after supplying power to the IC. D 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 module. 3. If reverse recovery time of D is long, high voltage is applied to Pin. In this case, a zener diode should be inserted between Pin and Pin for necessary protection, as shown above.. If Pin is operating, C trip is expected to be wired as close as possible to Pin and Pin and be less than cm. Application Example of High Power Supply V IN 3 VLA V CC.7kΩ Ctrip C DZ (3V) Rg D V EE C 7 C S V CC = V V EE = V C trip = pf C, C µf (Low Impedance) / Rev.
Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) 9-77 www.pwrx.com VLA-R PROPAGATION DELAY TIME L-H, t PLH PROPAGATION DELAY TIME H-L, t PHL..... t PLH, t PHL -T a CHARACTERISTICS V CC = V V EE = -V R G = 3.Ω V IN = V LOAD C =.µf t PLH t PHL - AMBIENT TEMPERATURE, T a, ( C) PROPAGATION DELAY TIME L-H, t PLH PROPAGATION DELAY TIME H-L, t PHL..... t PLH, t PHL -V I CHARACTERISTICS V CC = V V EE = -V R G = 3.Ω T a = C LOAD C =.µf t PLH t PHL 3...... INPUT SIGNAL VOLTAGE, V I, (VOLTS) CONTROLLED TIME DETECT SHORT CIRCUIT, t trip, t trip... 3... - t trip, t trip -T a CHARACTERISTICS V CC = V V EE = -V t trip (C trip = pf) t trip (C trip = pf) AMBIENT TEMPERATURE, T a, ( C) 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.
Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 97 (7) 9-77 www.pwrx.com VLA-R POWER DISSIPATION, P D, (WATTS).. 3... POWER DISSIPATION - AMBIENT TEMPERATURE CHARACTERISTICS (MAXIMUM RATING) R g =.Ω (INCLUDING THE POWER DISSIPATION OF R g ) CONSUMPTION CURRENT, (ma) CONSUMPTION CURRENT - SUPPLY VOLTAGE (PIN: -) INPUT SIGNAL L T a = C 3 AMBIENT TEMPERATURE, T a, ( C) SUPPLY VOLTAGE, (VOLTAGE) (PIN: -) / Rev.