June 1999

1/7

®

VB027BSP

HIGH VOLTAGE IGNITION COIL DRIVER

POWER I.C.

s

PRIMARY COIL VOLTAGE INTERNALLY SET

s

COIL CURRENT LIMIT INTERNALLY SET

s

LOGIC LEVEL COMPATIBLE INPUT

s

DRIVING CURRENT QUASI PROPORTIONAL

TO COLLECTOR CURRENT

s

DOUBLE FLAG-ON COIL CURRENT

DESCRIPTION

The VB027BSP is a high voltage power integrated

circuit

made

using

the

STMicroelectronics

VIPower

™ technology, with vertical current flow

power darlington and logic level compatible

driving circuit. Built-in protection circuit for coil

current limiting and collector voltage clamping

allows the device to be used as smart, high

voltage, high current interface in advanced

electronic ignition system.

TYPE

VB027BSP

320V

10.5A

160mA

BLOCK DIAGRAM

PowerSO-10

™

1

10

DRIVER

OVERTEMP.

FLAG 1

REFERENCE

PROTECTION

FLAG

INPUT

FLAG 2

QUASI PROP.

BASE CURRENT

+

-

+

-