VB325SP-E Datasheet, PDF (1/9 Pages) STMicroelectronics – HIGH VOLTAGE IGNITION COIL DRIVER POWER I.C.

®
VB325SP
HIGH VOLTAGE IGNITION COIL DRIVER
POWER I.C.
TYPE
VB325SP
V_cl
380V
I_cl
I_CC
10A
150mA
s PRIMARY COIL VOLTAGE INTERNALLY SET
) ^{s COIL CURRENT LIMIT INTERNALLY SET}
t(s ^{s LOGIC LEVEL COMPATIBLE INPUT}
s DRIVING CURRENT QUASI PROPORTIONAL
c _{TO COLLECTOR CURRENT}
du s SINGLE FLAG-ON COIL CURRENT
ro ^{s LOW VOLTAGE CLAMP THERMAL}
SHUTDOWN
10
1
PowerSO-10™
te ^P _DESCRIPTION
le _{The VB325SP is a high voltage power integrated}
o _{circuit made using the STMicroelectronics}
s _{VIPower™ M1-3 technology, with vertical current}
b _{flow power darlington and logic level compatible}
O _{driving circuit. The enable pin allows to externally}
- _{block the switch when the input is on. Built-in}
) _{protection circuit for coil current limiting and}
t(s ^{collector voltage clamping allows the device to be}
used as smart, high voltage, high current interface
duc ^{BLOCK DIAGRAM}
ro _VCC
in advanced electronic ignition system. If the input
signal from the micro happens to remain high, the
device protects itself against over-heating by
forcing collector current to smooth decrease (low
voltage clamp feature) and no undesidered spark
occurs (see figure 4).
BD
te ^P HV_C
le^VIN
DRIVER
Obso ^{QUASI PROP.}
BASE CURRENT
DIAGNOSTIC
OUTPUT
LIMITER
V_CC
V_F1
V_R
-
REFERENCE
V_LIM
V_TH
THERMAL
PROTECTION
R_SENSE
SN
September 2013
E
LGND
DocID9671 Rev 4
GND
1/9