MP6545A

– SIMPLE THREE-PHASE POWER STAGE W/ CURRENT MEASUREMENT

MP6545A Rev. 1.1

MonolithicPower.com

14

5/12/2023

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Over-Voltage Protection (OVP)

If VIN exceeds the OVP threshold (VOVP), then

the outputs are disabled and nFAULT is pulled

low. The driver remains disabled until the

device is reset by pulling nRESET low, or

cycling the power on the MP6545A.

Input

Under-Voltage

Lockout

(UVLO)

Protection

If VIN falls below the under-voltage lockout

(UVLO) threshold (VUVLO), then all circuitry in

the device is disabled and the internal logic

resets. Once VIN exceeds VIN_UVLO, the device

starts up again and resumes normal operation.

Thermal Shutdown

If the die temperature exceeds safe limits, then

all the MOSFETs in the H-bridge are disabled

and nFAULT is pulled low. Once the die

temperature

returns

to

a

safe

level,

the

MP6545A automatically starts up again and

resumes normal operation.