TB9051FTG
Ver.1.1 2019-03-14
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4. Block Diagram
Figure 4.1 Block diagram
Note: Some of the functional blocks, circuits in the block diagram may be omitted or simplified for
explanatory purposes.
The signal which is performed the logical operation of the EN and ENB pin input, is not connected
to each driver output circuit. However, each EN and ENB signal is connected independently to the
output circuit of each driver.
Control
・Over current detection
・POR
・Low voltage detection
・High voltage detection
・Thermal detection
Pre-Driver
Over-temperature
detection
Over current
detection
Hi-side current
monitoring
VBAT
OUT1
OUT2
PGND
AGND
PWM2
PWM1
EN
ENB
M
Battery
Microcontroller
5V ECU
VCC
DIAG
OSC circuit
OCC
OCM
EN circuit
5.1kΩ
Low voltage
detection
Initial
diagnosis
Low voltage
detection, and high
voltage detection
Initial
diagnosis
POR