Figure 6. VCC power ON and UVLO, LVG timing

Fault pin connected to external pull-up.

VCC

VCCthON

VCCthOFF

0 V

0 V

FAULT

LIN

0 V

0 V

LVG

UVLO VCC

Figure 7. VCC power ON and UVLO, HVG timing

Fault pin connected to external pull-up.

VCC

VCCthON

VCCthOFF

0 V

0 V

VBO

BOthON

VBOthOFF

0 V

0 V

FAULT

HIN

HVG-OUT

V

UVLO VCC

5.4

VBO UVLO protection

Dedicated undervoltage protection is available on each bootstrap section between BOOTx and OUTx supply

pins. In order to avoid intermittent operation, a hysteresis sets the turn-off threshold with respect to the turn-on

threshold.

When VBO voltage goes below VBOTHOFF threshold, the HVG output of corresponding bootstrap section is

switched off. When VBO voltage reaches VBOTHON threshold device returns to normal operation and the output

remains off up to the next input pins transition that requests HVG to turn on.

STDRIVE601

VBO UVLO protection

DS12949 - Rev 2

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