MP6604A

– SIMPLE, DUAL H-BRIDGE DRIVER WITH SEPARATE IN AND EN PINS

MP6604A Rev. 1.1

MonolithicPower.com

14

5/12/2023

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than the OCP deglitch time (tOCP), then all of the

MOSFETs in the H-bridge are disabled, and

nFAULT is pulled low. The driver turns on again

once the device is reset by pulling the nRESET

pin low, or by cycling the power on VIN. An OC

fault on either the HS-FET or LS-FET (e.g. an

excessive current to ground, to the supply, or

across the motor winding) can cause an OC

shutdown.

Over-Voltage Protection (OVP)

If VIN exceeds the OVP threshold, then the H-

bridge output is disabled, and nFAULT is pulled

low. The driver turns on again once the device

is reset by pulling the nRESET pin low, or by

cycling the power on VIN.

VIN

Under-Voltage

Lockout

(UVLO)

Protection

If VIN drops below the under-voltage lockout

(UVLO) threshold, then all

of the IC’s circuitry is

disabled, and the internal logic is reset. Once

VIN exceeds the UVLO threshold, the part

resumes normal operation.

Thermal Shutdown

If the die temperature the thermal shutdown

threshold (165°C), then all of the MOSFETs in

the H-bridge are disabled, and nFAULT is

pulled low. Once the die temperature drops to

150°C, the part resumes normal operation .