參數(shù)資料
型號: MCZ33198EF
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Automotive High-Side TMOS Driver
中文描述: 汽車高邊的TMOS驅(qū)動器
文件頁數(shù): 14/17頁
文件大?。?/td> 203K
代理商: MCZ33198EF
Analog Integrated Circuit Device Data
Freescale Semiconductor
14
33198
FUNCTIONAL DESCRIPTION
INTRODUCTION
Pin 2, which is normally connected to a resistor, can
sustain a reverse battery operation, providing that the DRN
resistor is higher than 3.3K. A 1K resistor at pin 1 is also
necessary to limit the reverse current flowing through the
MOSFET body diode.
Figure 19. 33198 GND Disconnection Circuitry
OPERATION
When module GND is disconnected, and if the VBAT
connection is still present, pin 3 of the MC33198 goes to
about 2/3 of V
BAT
,
if additional circuitry is not inserted. With
R1/Q1, the Gate/Source voltage of the MOSFET is shorted
as soon as pin 3 voltage rises above GND level. See
Figure
19, 33198 GND Disconnection Circuitry
C
7
6
Vbat
4
R1
5
1
3
8
MC33198
5V
Q1
Vbat
R1 = 3,3K
Q1 = 2N2222
IN
Additional circuitry
to present MOSFET
turn-on in case of module
Gnd disconnection
Device drive
circuitry and
interface
Module Gnd
LOAD
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