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STSPIN250

Device description

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6

Device description

The STSPIN250 is a single brush DC motor driver integrating a PWM current controller and

a power stage composed by a fully-protected full-bridge.

6.1

Standby and power-up

The device provides a low settable consumption mode forcing the STBY\RESET input

When the device is in the standby status, the power stage is disabled (outputs are in high

impedance) and the supply to the integrated control circuitry is cut-off.

6.2

Motor driving

The outputs of the full-bridge are controlled by the PWM and PH inputs as listed in Table 8.

Table 8. Truth table

EN\FAULT

PH

PWM

OUTx1

OUTx2

Full-bridge condition

0

X

X

HiZ

HiZ

Disabled

1

0

0

GND

GND

Both LS on

1

0

1

GND

VS

HSx2 and LSx1 on (current X1

1

1

0

GND

GND

Both LS on

1

1

1

VS

GND

HSx1 and LSx2 on (current X1