MP2192

– 2A, SYNCHRONOUS STEP-DOWN CONVERTER WITH 25µA IQ

MP2192 Rev. 1.0

MonolithicPower.com

15

5/12/2021

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short circuit is removed and the output rises

back to the regulation level.

Over-Voltage Protection (VOUT OVP)

The MP2192 monitors VFB to detect over-

voltage (OV) conditions. If VFB rises above

117% of the target voltage, the controller enters

a dynamic regulation period. During this period,

the LS-FET stays on until the low-side current

drops to -1.5A. This discharges the output to

keep it within the normal range.

If the OV condition still remains, the LS-FET

turns on again after a 1µs time delay. The

MP2192 exits this regulation period when VFB

drops below 104% of VREF. If the dynamic

regulation cannot limit the increasing output

voltage, and input OVP occurs when VIN

exceeds 6.2V, the MP2192 stops switching until

the input voltage drops below 5.7V. Then the

MP2192 resumes operation.