STA517B13TR datasheet(8/13 Pages) STMICROELECTRONICS

номер детали	STA517B13TR

подробное описание детали	60 V 6 A quad power half bridge

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Power supply and control sequencing

STA517B

8/13

4

Power supply and control sequencing

To guarantee correct operation and reliability, a correct turn on/off sequence must be

followed. Figure 3 shows the correct power on sequence.

Figure 3.

Correct power-on sequence

Vcc must turn on before VL in order to prevent uncontrolled current flowing through an

internal protection diode connected between VL (logic supply) and Vcc (high power supply).

Failure to do so could result in damage to the device.

PWRDN must be released after VL is switched on. An input signal can then be sent to the

power stage.

PWRDN

IN

Vcc

VL

Vcc > VL

V

t

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