SLVSH40 November 2023 TPS92201 , TPS92201A
PRODMIX
Adaptive off-time with peak current control scheme is used in the device. The device operates at typically 1.5-MHz pulse width modulation (PWM) mode in full current range. At medium to heavy load, the device operates in pulse width modulation (PWM) mode with 1.5-MHz switching frequency. At light load, the device automatically enters pulse frequency modulation (PFM) to maintain high efficiency over the entire load current range. Based on the VIN/VOUT ratio, a simple circuit sets the required off time for the low-side MOSFET. The switching frequency relatively constant regardless of the variation of input voltage, output voltage, and load current.