VB923 ® HIGH VOLTAGE IGNITION COIL DRIVER POWER IC ■ ■ ■ ■ NO EXTERNAL COMPONENT REQUIRED INTEGRATED HIGH VOLTAGE CLAMP COIL CURRENT LIMIT INTERNALLY SET HIGH RUGGEDNESS DESCRIPTION The VB923 is a monolithic high voltage integrated circuits made using STMicroelectronics VIPower Technology, which combines a vertical current flow power trilinton with a coil current limiting circuit and a collector voltage clamping. The device is peculiarly suitable for application in high performance electronic car ignition, where coil current limitation and voltage clamping are required. 3 2 1 TO-247 BLOCK DIAGRAM October 1998 1/5 VB923 ABSOLUTE MAXIMUM RATING Symbol Value Unit HVc Collector Voltage Internally Limited V Ic Collector Current Internally Limited A I in Input Current 40 mA Ptot T stg Tj E s/b Parameter Total Dissipation at T c = 25 o C 150 W Storage Temperature -40 to 150 o Operating Junction Temperature -40 to150 o Avalanche Energy 350 C C mJ THERMAL DATA Symbol R thj-case R thj-amb Parameter Value Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max Max Unit o 0.83 30 o C/W C/W ELECTRICAL CHARACTERISTICS (Vbatt = 14 V, HEI Coil = xx, Tcase = 25 oC unless otherwise specified) Symbol Parameter Test Conditions Icgo Collector Cut-off Current V in = 0 V cl Clamping Voltage -40 < T j < 125 C V cg(sat ) Power Stage Saturation Voltage Ic = 5 A I cl * Coil Current Limit -30 ≤ T j ≤ 50 o C Min. Typ. Max. Unit 250 µA 400 500 V 2 2.5 V 6.6 7.2 A 3.5 V 4 V 0.5 4 V 15 40 µs HV c = 200 V o Ic = 5 A 350 Vin = 4 V 6.0 V f ** Diode Forward Voltage I f = 10 A V inCL Input Voltage During On State -30 ≤ T j ≤ 120 o C I c = 5 A I in = 10 mA see note 1 V inTH Threshold Input Voltage -30 ≤ T j ≤ 120 o C see note 2 t d(off) Switching Time Ic = 3 A Ic = 5 A L = 6 mH (see fig.1) * ICL is measured 1ms after the maximum peak ** Pulsed: Pulse duration = 300 µs, duty cycle 1.5 % Note 1: After adjusting input signal (frequency and duty) to be IC = 5A, Vin (Tr ON) should be measured. Note 2: The device is biased with 14V on collector with respectto emitter. Then a voltage ramp (0 to 5V) is put on input. VinTH is the input voltage when the device is in on-state with IC=5A 2/5 VB923 Fig. 1 Switching Time 3/5 VB923 TO-247 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 4.7 5.3 0.185 0.209 D 2.2 2.6 0.087 0.102 E 0.4 0.8 0.016 0.031 F 1 1.4 0.039 0.055 F3 2 2.4 0.079 0.094 F4 3 3.4 0.118 0.134 G 10.9 0.429 H 15.3 15.9 0.602 0.626 L 19.7 20.3 0.776 0.779 L3 14.2 14.8 0.559 0.413 L4 34.6 1.362 L5 5.5 0.217 0.582 M 2 3 0.079 0.118 Dia 3.55 3.65 0.140 0.144 P025P 4/5 VB923 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. Specification 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. The ST logo is a registered trademark of STMicroelectronics © 1998 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com . 5/5