JAJSEC4E September 2012 – January 2018 BQ24157
PRODUCTION DATA.
In boost mode, under light load conditions, the IC operates in pulse skipping mode (PFM mode) to reduce the power loss and improve the converter efficiency. During boosting, the PWM converter is turned off once the inductor current is less than 75mA; and the PWM is turned back on only when the voltage at PMID pin drops to about 99.5% of the rated output voltage. A unique pre-set circuit is used to make the smooth transition between PWM and PFM mode.