TA7354P データシートの表示（PDF） - Toshiba

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TA7354P

BRIDGE DRIVER

Toshiba 

APPLICATION CIRCUIT

TA7354P

Fig. 1

Note:

Fig.1 shows the basic application circuit.

Optimum values of the C, R depend on the inherent constant of a motor and parasitic C, R values around the

circuit.

APPLICATION NOTE

(1) Input circuit

Fig. 2

Input circuit is shown in Fig.2. It’s a “High Active” type.

If a voltage above specified VIN (H) value fed into input terminal that means “Logic 1”, and the voltage less

than VIN (L) or connect to GND means “Logic 0”.

And the circuit have a hysteresis for stable operation. (See Fig.1)

(2) If the braking operation is so loose, connect a additional diode between each output to GND. (See Fig.3)

(3) If the back electromotive pulse generated in output coil is so strong.

Internally connected back electromotive suppression diode may be damaged by this pulse.

In such a case connect a additional diode between each output to VCC. (See Fig.4)

Fig. 3

Fig. 4

(4) Utmost care is necessary in the design of the output line, VCC and GND line since IC may be destroyed due to

short−circuit between outputs, air contamination fault, or fault by improper grounding.

4

2001-06-13

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