VLA567-01R. Hybrid IC IGBT Gate Driver + DC/DC Converter

Transcription

1 VLA57-R Powerex, Inc., 73 Pavilion Lane, Youngwood, Pennsylvania 597 (7) Hybrid IC IGBT Gate Driver + DC/DC Converter A 3 B D Description: VLA57-R is a hybrid integrated circuit designed for driving n-channel IGBT modules. This device includes the isolated DC-DC converter required for gate drive. F E The built-in short circuit protection provides gate lockout to maintain reverse bias for a predetermined time after the detection of the short circuit. H G VI+ VI- TEST TEST V D Gi 3 J kω Ω DC-AC CONVERTER PC UVL UVL TIMER & RESET INTERFACE V EE V EE LATCH GATE SHUTDOWN C DETECT DETECT C trip V O E F O C S V EE NC NC Features: Low Height, DIP Structure Built-in Isolated DC-DC Converter for Gate Drive Output Peak Current is ±A Max. Built-in Short Circuit Protection Electrical Isolation Voltage is 5 Vrms (for Minute) CMOS Compatible Input Interface Adjustable Fall Time for Short Circuit Protection Recommended IGBT Modules: V CES = V up to A V CES = V up to A VI+ TIMER & RESET LATCH DETECT DETECT C trip kω INTERFACE 9 V O VI- 5 VI- Ω PC GATE SHUTDOWN 7 5 E F O C S NC 3 V EE Outline Drawing and Circuit Diagram Dimensions Inches Millimeters A. Max.. Max. B.9 Max.. Max. C.±.39.5±. D. 5.7 Dimensions Inches Millimeters F.7 Max. 7. Max. G.77±..5±.5 H. 3.5 J..5 E.+.7/ /-. 5/ Rev.

2 VLA57-R Absolute Maximum Ratings, T a = 5 C unless otherwise specified Characteristics Symbol Rating Units Supply Voltage (DC) V D.5 Volts Input Signal Voltage (Applied Between Vl+ - Vl-, 5% Duty Cycle, Pulse Width ms) V I - ~ +7 Volts Output Peak Current (Pulse Width μs) I OHP + Amperes I OLP - Amperes Operating Temperature (No Condensation Allowable) T opr - ~ 7 C Storage Temperature (No Condensation Allowable) * T stg - ~ 9 C Fault Output Current (Applied F O -Pin) IF O ma Input Voltage at DETECT-pin (Applied DETECT-Pin) V R-DET 5 Volts Gate Drive Current (Gate Average Current Per One Circuit) I drive ma Isolation Voltage Between Input and Output (Sine Wave Voltage, Hz for Minute) V iso 5 V rms Isolation Voltage Between Each Onput (Sine Wave Voltage, Hz for Minute) V iso 5 V rms * Differs from H/C condtion. 5/ Rev.

3 VLA57-R Electrical Characteristics, T a = 5 C,, R G = Ω unless otherwise specified Characteristics Symbol Test Conditions Min. Typ. Max. Units Supply Voltage V D Recommended Range Volts Pull-up Voltage on Input Side V IN Recommended Range, (When V IN = 5V, "H" Volts Input Current Must Stay in Recommended Range) "H" Input Signal Current *3 I IH Recommended Range 3 ma Switching Frequency f Recommended Range khz Gate Resistance R G Recommended Range Ω Gate Positive Supply Voltage. Volts Gate Negative Supply Voltage V EE -.5 Volts Gate Supply Efficiency η, Load Current = ma x 7 79 % "H" Output Voltage *3 V OH R G = Ω, f = khz, Load Current =.μf Volts "L" Output Voltage *3 V OL R G = Ω, f = khz, Load Current =.μf -. Volts "L-H" Propagation Time *3 t PLH I IH = 3mA.. μs "L-H" Rise Time *3 t r I IH = 3mA. μs "H-L" Propagation Time *3 t PHL I IH = 3mA.. μs "H-L" Fall Time *3 t f I IH = 3mA.3 μs Timer t timer Between Start and Cancel (Under Input Sign "L") ms Fault Output Current I FO Applied Pin, 9 * 5 ma Controlled Time Detect Short Circuit t trip Pin, 3 : 5V or More, Pin, : Open. μs Controlled Time Detect Short Circuit * t trip Pin, 3 : 5V and More, 3. μs Pin 7-, - : 7pF SC Detect Voltage V SC Collector Voltage of Module 5 Volts Under Voltage Lock Out UVLO_ Voltage of.5 Volts * Length of wiring of condenser controlled time detect short-circuit is within 5cm from Pin 7 and ( and ) coming and going. *3 When LED of PC is ON (luminescence), V O is high. * With pull-up.7k ohm. 5/ Rev. 3

4 VLA57-R Definition of Characteristics SWITCHING OPERATION OPERATION OF SHORT CIRCUIT PROTECTION V I VI V V O t r t f 9% VO V -5V 5% ttrip, ttimer % FO V V t PLH t PHL V Application Example 9.7kΩ PC P V IN : 5V GATE SIGNAL HC ETC. GND V D : 5V 3 R G 5 + C + C 7 Ctrip CS DZ.7kΩ DZ, DZ3 D IGBT MODULE GATE SIGNAL 3 5 VLA57-R 3 R G 9 + C3 D DZ5, DZ HC ETC. GND 7 + C Ctrip CS DZ N 5.7kΩ.7kΩ PC NOTE:. Low impedance capacitors (C~C) should be connected as close as possible to the hybrid IC.. D requires approximately the same blocking voltage as the power modules. 3. If the reverse recovery time of D or D is long, Pin or Pin 3 can end up with high voltage. For additional protection, insert a zener diode between Pin and Pin as well as between Pin 3 and Pin 7 as shown in the application example circuit.. If using an external C trip capacitor at Pin or Pin, the C trip must be wired as close as possible to the IC s pins (less than 5cm total). 5. The wiring length from the driver s output to the IGBT s gate should be kept as short as possible, as should the signal connections from the controller to the driver s inputs in order to avoid errors caused by circuit noise.. A.7kΩ resistor can be connected between Pins 7 and as well as between Pins 3 and if short-circuit protection is not desired. In this case D, D, DZ and DZ should be left out and Pins and 9 should be left unconnected. 7. Pins and are for manufacturing test purposes, and should be left unconnected. ±5% V IN = 5V ±5% C ~ = μf, 5V (Low Impedance) C trip, C trip : Depended on R G, R G (Aim : ~ 7pF, V, Ceramic) CS, CS : Depends on Serge Voltage Z, Z : 3V DZ, DZ3, DZ5, DZ : V D, D : Fast Recovery Diode (t rr :.µs max.) RPH(Sanken) etc. PC, PC : TLP7(Toshiba), PS5 (NEC) etc. 5/ Rev.

5 VLA57-R Operation of Protection Circuit Adjustment of Output Fall Time. When an ON input signal is applied for a period longer than T trip and the collector voltage is high, the hybrid IC will recognize the condition as a short-circuit and immediately reduce the gate voltage. It will also produce a low voltage fault signal at the respective Pin 9 or Pin alerting that the protection circuit is in operation.. The protection circuit will reset if an OFF input signal is applied and the minimum ~ms shutdown time has passed. OFF signal must be μs or more. 3. The controlled time to detect a short-circuit (T trip ) should be set so that the IGBT can be fully turned ON before a short-circuit condition can be detected. It is possible to adjust T trip by connecting a capacitor (C trip ) between Pins 7 and, as well as Pins and.. When the short-circuit protection is activated, the soft gate shutdown circuit reduces the collector surge voltage on the IGBT. The gate shut down speed can be slowed even more by adding a capacitor to the C S terminal (between Pins 5 and ; Pins 7 and 3). VO ts 3V V Operation Flow on Detecting Short Circuit START DETECTION OF SHORT CIRCUIT 7 t s - C S CHARACTERISTICS GATE SHUTDOWN CIRCUIT OPERATE TIMER START OUTPUT FAULT SIGN END OF TIMER YES INPUT SIGN IS OFF NO NO ~ ms FALL TIME ON ACTIVITY OF SHORT CIRCUIT PROTECTION, t s, (µs) 5 3 YES RESET 3 5 CONNECTIVE CAPACITANCE, C S, (pf) PIN: 5- (7 3) NOTE: L output voltage (VOL) with protection circuit operating is about V EE + V 5/ Rev. 5

6 VLA57-R, V EE CHARACTERISTICS, V EE -I O CHARACTERISTICS, V EE, (VOLTS) V = 5V D R G = Ω LOAD : C =.μf f = khz V EE -, V EE, (VOLTS) DC LOAD V D = 5.V V D =.V LOAD CURRENT, I O, (AMPERES) PIN: - (7-5) PROPAGATION DELAY TIME L-H, t PLH, (μs) PROPAGATION DELAY TIME H-L, t PHL, (μs)..... t PLH, t PHL -T a CHARACTERISTICS R G = Ω LOAD : C =.μf t PLH t PHL - PROPAGATION DELAY TIME L-H, t PLH, (μs) PROPAGATION DELAY TIME H-L, t PHL, (μs) t PLH, t PHL -V I CHARACTERISTICS.. LOAD : C =.μf t PLH t PHL INPUT SIGNAL VOLTAGE, V I, (VOLTS) 5/ Rev.

7 VLA57-R CONTROLLED TIME DETECT SHORT CIRCUIT, t trip, t trip, (μs) t trip -T a CHARACTERISTICS R G = Ω LOAD : C =.μf t trip (C trip = pf) t trip (C trip = 7pF) CONTROLLED TIME DETECT SHORT CIRCUIT, t trip, (μs) t trip -C trip CHARACTERISTICS R G = Ω LOAD : C =.μf CONNECTIVE CAPACITANCE, C trip, (pf) PIN: 7- (-) INPUT CURRENT, I D, (AMPERES) I D -I O CHARACTERISTICS DRIVING DOUBLE CIRCUIT..... LOAD CURRENT, I O, (AMPERES) PIN:, - (7-5) H OUTPUT VOLTAGE, V OH, (VOLTS) L OUTPUT VOLTAGE, V OL, (VOLTS) V OH, V OL -T a CHARACTERISTICS R G = Ω LOAD : C =.μf V OH f = khz V OL - 5/ Rev. 7

8 VLA57-R 9 η-i drive CHARACTERISTICS, V EE -V D CHARACTERISTICS EFFICIENCY, η, (%) DRIVING DOUBLE CIRCUIT..... GATE DRIVE CURRENT, I drive, (AMPERES), V EE, (VOLTS) I O =.A V EE SUPPLY VOLTAGE, V D, (VOLTS). DERATING CHARACTERISTICS 9 η-v D CHARACTERISTICS GATE DRIVE CURRENT, I drive, (AMPERES)..... LOAD : C =.μf DRIVING DOUBLE CIRCUIT V IN = 5.V V IN = 5V V IN =.V - EFFICIENCY, η, (%) 5 75 I O =.A DRIVING DOUBLE CIRCUIT SUPPLY VOLTAGE, V D, (VOLTS) 5/ Rev.