Toshiba e-STUDIO283 - Page 275

12
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DEVELOPMENT SYSTEM
12 - 5
The block diagram of TA8428 and the operation of the control logic are shown below.
Fig. 12-4
Input Output
State
IN1 IN2 M (+) M (-)
HHL LBrake
L H L H CCW
HLHLCW
LL OFF
(High impedance)
Stop
1 2 3 4 5 6 7
IN1 IN2 M(+) GND M(-) N.C. VCC
Thermal shutdown
over-current
protection circuit
Control logic