VB922

® VB922 HIGH VOLTAGE IGNITION COIL DRIVER POWER IC s s s s NO EXTERNAL COMPONENT REQUIRED INTEGRATED HIGH VOLTAGE CLAMP COIL CURRENT LIMIT INTERNALLY SET HIGH RUGGEDNESS DESCRIPTION The VB922 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 VB922 ABSOLUTE MAXIMUM RATING Symbol HVc Ic I in Ptot T stg Tj E s/b Collector Voltage Collector Current Input Current Total Dissipation at T c = 2 5 o C Storage Temperature Operating Junction Temperature Avalanche Energy Parameter Value Internally Limited Internally Limited 40 150 -40 to 150 -40 to150 350 Unit V A mA W o o C C mJ THERMAL DATA Symbol R thj-case R thj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient Max Max Value 0.83 30 Unit o o C/W C/W ELECTRICAL CHARACTERISTICS (Vbatt = 14 V, HEI Coil = xx, Tcase = 25 oC unless otherwise specified) Symbol Icgo V cl V cg(sat ) I cl * Vf ** V inCL V inTH t d(off) Parameter Collector Cut-off Current Clamping Voltage Power Stage Saturation Voltage Coil Current Limit V in = 0 Test Conditions H V c = 2 00 V o Min. Typ. Max. 250 Unit µA V V A A V V V µs -40 < T j < 1 25 C Ic = 5 A Vin = 4 V Ic = 5 A 350 400 2 500 2.5 7.9 8.1 3.5 50 ≤ T j ≤ 1 50 o C -30 ≤ T j ≤ 5 0 o C -30 ≤ T j ≤ 1 20 C I c = 5 A I in = 1 0 mA see note 1 -30 ≤ T j ≤ 1 20 o C s ee note 2 Ic = 3 A Ic = 5 A (see fig.1) o 6.7 6.4 7.3 7.3 Diode Forward Voltage I f = 1 0 A Input Voltage During On State Threshold Input Voltage Switching Time 4 0.5 15 4 40 L = 6 mH * 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 VB922 Fig. 1 Switching Time Fig. 2 Coil Current Limit Spread 3/5 VB922 TO-247 MECHANICAL DATA mm MIN. A D E F F3 F4 G H L L3 L4 L5 M Dia 2 3.55 15.3 19.7 14.2 34.6 5.5 3 3.65 0.079 0.140 4.7 2.2 0.4 1 2 3 10.9 15.9 20.3 14.8 0.602 0.776 0.559 0.413 1.362 0.217 0.118 0.144 TYP. MAX. 5.3 2.6 0.8 1.4 2.4 3.4 MIN. 0.185 0.087 0.016 0.039 0.079 0.118 0.429 0.626 0.779 0.582 inch TYP. MAX. 0.209 0.102 0.031 0.055 0.094 0.134 DIM. P025P 4/5 VB922 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