MP8794
DESCRIPTION
The MP8794 is a fully integrated, highfrequency, synchronous, buck converter. The MP8794 offers a pact solution that achieves up to 20A of output current with excellent load and line regulation over a wide input supply range. The MP8794 operates at high efficiency over a wide output current load range.
The device adopts an internally pensated constant-on-time (COT) control mode that provides fast transient response and eases loop stabilization.
The operating frequency can be set to 600k Hz, 800k Hz, or 1000k Hz with MODE configuration, allowing the MP8794 frequency to remain constant regardless of the input and output voltages.
The output voltage start-up ramp is controlled by an internal 1ms timer that can be increased by adding a capacitor on REF/TRK. An opendrain power good (PGOOD) signal indicates whether the output is within its nominal voltage range. PGOOD is clamped at about 0.7V with an external pull-up voltage when the input supply fails to power the MP8794.
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