Block diagram
Four Channels; Open Load detection in off state;
3 IN1
5 IN2
4 ST1/2
ESD
Voltage
source
V Logic
Voltage
sensor
Logic
2 GND1/2
Signal GND
Chip 1
Chip 1
Overvoltage
protection
Current
limit 1
Gate 1
protection
Level shifter
Rectifier 1
Charge
pump 1
Charge
pump 2
Limit for
unclamped
ind. loads 1
Open load
Short to Vbb
detection 1
Channel 1
Temperature
sensor 1
Current
limit 2
Gate 2
protection
Level shifter
Rectifier 2
Limit for
unclamped
ind. loads 2
Open load
Short to Vbb
detection 2
Channel 2
Temperature
sensor 2
7 IN3
9 IN4
8 ST3/4
Logic and protection circuit of chip 2
(equivalent to chip 1)
Channel 3
BTS712N1
+ V bb
Leadframe
OUT1
18
OUT2
17
Load
Load GND
+ V bb Leadframe
OUT3 14
6 GND3/4
Signal GND
Chip 2
PROFET
Chip 2
Leadframe connected to pin 1, 10, 11, 12, 15, 16, 19, 20
Channel 4
OUT4
13
Load
Load GND
Semiconductor Group
2
2004-Mar-11