®
VB921ZVFI / VB921ZVSP
HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C.
ADVANCED DATA
TYPE VB921ZVFI VB921ZVSP
n n n n
Vcl 340V
Icl 7.5A
Vcg(sat) 2.5V
NO EXTERNAL COMPONENT REQUIRED INTEGRATED HIGH VOLTAGE CLAMP COIL CURRENT LIMIT INTERNALLY SET HIGH RUGGEDNESS
3 1 2
10
1
ISOWATT220 DESCRIPTION The VB921ZVFI, VB921ZVSP is a monolithic high voltage integrated circuit made using the 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 particularly suitable for application in high performance electronic car ignition, where coil current limitation and voltage clamping are required.
PowerSO-10™
ORDER CODES: ISOWATT220 VB921ZVFI POWERSO-10™ VB921ZVSP
BLOCK DIAGRAM
HVc
VIN
CONTROL UNIT
R
SENSE
ND8012
GND
July 1999
1/7
1
VB921ZVFI / VB921ZVSP
ABSOLUTE MAXIMUM RATING
Symbol HVc IC VIN IIN Ptot Tj T stg Parameter Collector Voltage Collector Current Maximum Input Voltage Input current Total dissipation at TC=25 °C Junction operating temperature Storage temperature Value ISOWATT220 PowerSO-10 Internally limited Internally limited 8 10 40 100 - 40 to 150 - 40 to 150 Unit V A V mA W °C °C
THERMAL DATA
Symbol Rthj-case Rthj-amb Parameter Thermal resistance junction-case Thermal resistance junction-ambient (MAX) (MAX) Value ISOWATT220 PowerSO-10 3.12 1.25 62.5 62.5 Unit °C/W °C/W
CONNECTION DIAGRAM (TOP VIEW)
V IN VIN V IN VIN V IN
6 7 8 9 10 11
HVC
5 4 3 2 1
GND GND GND GND GND
3 2 1 GND HVC VIN
ELECTRICAL CHARACTERISTICS (VCC=12V; Tcase=25ºC unless otherwise specified)
Symbol VIN IIN Icgo Vcl (*) Icl (*) Vcg(sat) Vf (**) ∆ Icl Parameter Input Voltage Input Current Collector Cut-off Current High voltage clamp Coil Current Limit Power Stage Saturation Voltage Diode Forward Voltage Coil current variation in respect to VIN=5V Test Conditions VIN=4.2V; IC=5A (See test circuit) VIN=5V; IC=5A VIN=0V; HVC=250V -40°C