MP2188 – DUAL 3A, 5.5V, 1.2MHz, SYNCHRONOUS STEP-DOWN SWITCHER

MP2188 Rev. 1.01

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12

2/2/2016

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hiccup mode until the current drops to prevent

the inductor current from rising and possibly

damaging the components.

Short Circuit and Recovery

The MP2188 also enters short-circuit protection

(SCP) mode when it hits the current limit, and

tries to recover from the short circuit by entering

hiccup mode. In SCP, the MP2188 disables the

output power stage, discharges a soft-start

capacitor,

and

then

enacts

a

soft-start

procedure. If the short-circuit condition still

holds after soft-start ends, the MP2188 repeats

this operation until the short circuit ceases and

output rises back to regulation level.