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| TD350 ADVANCED IGBT/MOSFET DRIVER ADVANCE DATA s 0.75A MIN GATE DRIVE s NEGATIVE GATE DRIVE ABILITY s INPUT COMPATIBLE WITH PULSE TRANSFORMER OR OPTOCOUPLER s SEPARATE SINK AND SOURCE OUTPUTS FOR EASY GATE DRIVE s TWO STEPS TURN-ON AND TURN-OFF WITH ADJUSTABLE LEVEL AND DELAY s MILLER CLAMP FEATURE s s s s DESATURATION PROTECTION FAULT STATUS OUTPUT UVLO PROTECTION 2kV ESD PROTECTION D SO14 (Plastic MicroPackage) PIN CONNECTIONS (top view) DESCRIPTION TD350 is an advanced gate driver for IGBT and power MOSFET. Control and protection functions are included and allow the design of high reliability systems. APPLICATION IN VREF FAULT CON COFF 1 2 3 4 5 6 7 14 13 12 DESAT VH OUTH OUTL VL CLAMP GND s MOTOR CONTROL ORDER CODE Part Number TD350I Temperature Range -40, +125C Package TD350 11 10 9 8 LVON D * N LVOFF D = Small Outline Package (SO) - also available in Tape & Reel (DT) N = Dual in Line Package (DIP) January 2003 - rev. 2.4 This is preliminary information on a new product now in development. Details are subject to change without notice. 1/10 TD350 BLOCK DIAGRAM Vref IN Pulse Transformer VH Vref UVLO Desat 1.75V-3.25V DESAT 16V VH Optionnal VREF FAULT CON COFF LVON LVOFF Vref Block OUTH OUTL VL CLAMP GND -10V Vref Vref VH On Level Off Level VH TD350 PIN DESCRIPTION Name IN VREF FAULT CON COFF LVON LVOFF GND CLAMP VL OUTL OUTH VH DESAT Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Type Analog input Analog output Digital output Timing capacitor Timing capacitor Analog input Analog input Power supply Analog output Power supply Analog output Analog output Power supply Analog input Input +5V reference voltage Fault status output Turn on delay Turn off delay Turn on level Turn off level Signal ground Miller clamp Negative supply Gate drive output (sink) Gate drive output (source) Positive supply Desaturation protection Function 2/10 Control On-Off delay TD350 ABSOLUTE MAXIMUM RATINGS Symbol VHL VH VL Vout Vdes Vter Pd Tstg Tj Rhja Rhjc ESD Parameter Maximum Supply Voltage (VH - VL) Maximum VH voltage vs GND Minimum VL voltage vs GND Voltage on OUTH, OUTL, CLAMP pins Voltage on DESAT, FAULT, LVON, LVOFF pin Voltage on other pins (IN, CON, COFF, VREF) Power dissipation Storage temperature Maximum Junction Temperature Thermal Resistance Junction-Ambient Thermal Resistance Junction-Case Electrostatic discharge Value 28 28 -12 VL-0.3 to VH+0.3 -0.3 to VH+0.3 -0.3 to 7 500 -55 to 150 150 125 22 2 Unit V V V V V V mW C C C/W C/W kV OPERATING CONDITIONS Symbol VH VL VH-VL Toper Parameter Positive Supply Voltage vs GND Negative Supply Voltage vs GND Maximum Total Supply Voltage Operating Free Air Temperature Range Value UVLO to 26 0 to -10 26 -40 to 125 Unit V V V C ELECTRICAL CHARACTERISTICS Tamb = -20 to 125C, VH=16V, VL=-10V unless otherwise specified Symbol Input Vton Vtoff tonmin Iinp IN turn-on threshold voltage IN turn-off threshold voltage Minimum pulse width IN Input current 1.0 4.0 135 V V ns A V V mA Parameter Test Condition Min Typ Max Unit 100 220 1 Voltage reference - Note 1 Vref Iref Voltage reference Maximum output current T=25C Tmin 3/10 TD350 ELECTRICAL CHARACTERISTICS (continued) Tamb = -20 to 125C, VH=16V, VL=-10V unless otherwise specified Symbol Parameter Test Condition Min Typ Max Unit Desaturation protection Vdes Ides Fault output tfault VFL Clamp Vtclamp VCL On-Off Delay Vtdel Rdel Voltage threshold Discharge resistor 2.35 I=1mA 2.50 2.65 500 V mA A V CLAMP pin voltage threshold Clamp low voltage at Icsink=500mA 2.0 T=25C Tmin tf tpd tw UVLOH UVLOL Vhyst 270 60 Under Voltage Lockout (UVLO) UVLO top threshold UVLO bottom threshold UVLO hysteresis 10 9 0.5 11 10 1 12 11 V V V UVH-UVL Supply current Iin Quiescent current output=0V, no load 5 mA 4/10 TD350 FUNCTIONAL DESCRIPTION Input Input is compatible with optocoupler or pulse transformer. Input is triggered by signal edge and allows the use or low size, low cost pulse transformer. Input is active low (output is high when input is low) to ease the use of optocoupler. When driven by a pulse transformer, the input pulse (positive and negative) width must be larger than tonmin Voltage reference Voltage reference is used to build accurate timing for the two-level turn-on and turn-off with external resistor and capacitor. Desaturation protection Desaturation protection ensures protection of IGBT in case of overcurrent events. When the DESAT voltage goes higher that 7V, the output is driven low (with 2-level turn-off if applicable). FAULT output is activated. Fault state is exit at the next rising edge of IN input. A programmable blanking time is used to allow enough time for IGBT saturation. Blanking time is made with internal current source and external capacitor. DESAT input can also be used with an external comparator for overcurrent or overtemperature detection. Active Miller clamp Miller clamp allows to control the Miller current during high dV/dt situation and can avoid the use of negative supply voltage During turn-off, the gate voltage is monitored and the clamp output is activated when gate voltage goes below 2V (relative to GND). The clamp voltage is VL+3V max for Miller current up to 500mA. The clamp is disabled when IN input is triggered again. Two level turn-on and turn-off The two-level turn-on and turn-off are used to increase the reliability of the application. During turn-on, the gate voltage can be reduced to a programmable level in order to reduce the maximum IGBT current before desaturation protection takes place. During turn-off, gate voltage can also be reduced to a programmable level in order to reduce the IGBT current in case of over-current to avoid dangerous overvoltage across the IGBT and RBSOA problems specially at short circuit turn-off. Both turn-on (Tb) and turn-off (Ta) delays are programmable through external resistors and capacitors for accurate timing. Turn-off delay (Ta) is also used to delay the input signal to prevent distortion of input pulse width Minimum ON time In normal operation, minimum ON input signals should be greater than Ta+Tb. Input signals smaller than Ta are ignored. Input signals larger than Ta+Tb are transmitted to the output stage with a delay of Ta with minimum width distortion (Tw=Twout-Twin) For input signals between Ta and Ta+Tb, the IGBT could be partially turned on. These input signals should be avoided during normal operation. Output Output stage is able to sink/source 1.5A (0.75A min over full temperature range). Separated sink and source outputs allow independent gate charge and discharge control without extra external diode. Fault status output Fault output is used to signal a fault event (desaturation, UVLO) to a controller. Fault pin is designed to drive an optocoupler. Undervoltage protection Undervoltage detection protects the application in case of low VH supply voltage (during start-up or fault situation). During undervoltage, the OUTH pin is open and the OUTL pin is driven low (active pull-down for VH>2V, passive pull-down for VH<2V). Fault output signals the undervoltage state and is reset only when undervoltage state disappears. UVH VH UVL Vccmin 2V OUT FAULT 5/10 TD350 Figure 1 : Detailed Internal Schematic UVLO Comp_Input IN Delay Vref 1.75V-3.25V VH Vref VREF 250uA CON Comp_DelayOn Comp_Desat DESAT 2.5V 7.2V S1 Control Block Vref FAULT Comp_DelayOff COFF Comp_Clamp 2.5V S2 2V CLAMP VH LVON VH 2-level ON driver OUTH VH OUTL LVOFF 2-level OFF driver VL GND rev. 2 6/10 TD350 TIMING DIAGRAM Turn-on and turn-off Twin IN 2.5V COFF Ta 2.5V Ta CON Tb VH level LVON OUT Twout Open CLAMP VH level LVOFF VL level Clamp threshold Vge VL level Vce DESAT protection Minimum ON time Tin 2.5V COFF Ta Ta 2.5V CON Tb VH level LVON OUT VL level Open CLAMP LVOFF Ta Ta Desaturation fault IN 2.5V COFF Ta Ta 2.5V CON Tb LVON OUT Tb VH level LVOFF VL level Ta 7V DESAT Desat Blanking Time FAULT open 7/10 TD350 APPLICATION DIAGRAM Single supply IGBT drive with active Miller clamp Vref IN Pulse Transformer VH Vref UVLO Desat 1.75V-3.25V DESAT 16V VH OUTH OUTL VL CLAMP GND VREF FAULT CON COFF LVON LVOFF Vref Block On Level Off Level Vref Vref VH VH TD350 Large IGBT drive with negative gate drive Vref IN Pulse Transformer VH Vref UVLO Desat 1.75V-3.25V Control On-Off delay DESAT 16V VH OUTH OUTL VL CLAMP GND -10V VREF FAULT CON COFF LVON LVOFF Vref Block On Level Off Level Vref Vref VH VH TD350 8/10 Control On-Off delay TD350 Use of DESAT input for direct overcurrent detection Vref Vref IN Pulse Transformer VH Vref UVLO Desat 1.75V-3.25V DESAT 16V VH OUTH OUTL VL CLAMP GND VREF FAULT CON COFF LVON LVOFF Vref Block On Level Off Level Vref Vref VH VH TD350 Control On-Off delay 9/10 TD350 PACKAGE MECHANICAL DATA 14 PINS - PLASTIC MICROPACKAGE (SO) L C G c1 a2 b e3 D M e A s E 14 1 8 7 F Millimeters Dimensions Min. A a1 a2 b b1 C c1 D (1) E e e3 F (1) G L M S 0.1 0.35 0.19 0.5 45 (typ.) 8.55 5.8 1.27 7.62 3.8 4.6 0.5 4.0 5.3 1.27 0.68 8 (max.) 0.150 0.181 0.020 8.75 6.2 0.336 0.228 Typ. Max. 1.75 0.2 1.6 0.46 0.25 Min. 0.004 0.014 0.007 a1 Inches Typ. Max. 0.069 0.008 0.063 0.018 0.010 0.020 0.344 0.244 0.050 0.300 0.157 0.208 0.050 0.027 Note : (1) D and F do not include mold flash or protrusions - Mold flash or protrusions shall not exceed 0.15mm (.066 inc) ONLY FOR DATA BOOK. Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States (c) http://www.st.com 10/10 b1 |
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