MP86950

– INTELLI-PHASETM SOLUTION

W/ INTEGRATED MOSFETS AND DRIVERS

MP86950 Rev. 1.0

www.MonolithicPower.com

11

12/18/2020

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25°C. For example, the TMON/FLT is 0.8V at TJ

= 25°C, and 1.4V at TJ = 100°C.

Fault Function

When a fault occurs, TMON/FLT is pulled to

VDD to report the fault event, regardless of the

junction

temperature.

TMON/FLT

monitors

three different fault events: over-current, over-

temperature, and SW to PGND short.

1. Over-current fault: Four consecutive current

limit faults trigger an over-current fault.

Once a fault occurs, the part latches off to

turn off the HS-FET. The LS-FET turns off

when the inductor current reaches 0A.

2. Over-temperature fault: At TJ > 160°C, once

a fault occurs, the part latches off to turn off

the HS-FET. The LS-FET turns off when the

inductor current reaches 0A.

3. SW to PGND short: Once a fault occurs, the

part latches off to turn off the HS-FET.

The fault latch does not reset when it enters

standby mode. The fault latch can be released

by cycling the power on VIN or VDD.