ZHCSKJ3D december 2019 – may 2023 TPS652353
PRODUCTION DATA
When the TPS652353 operates in PSM mode, locating the switching frequency at the range of audio frequency is possible. Which causes audible noise, especially when the VLNB voltage is lower or closer to the VIN voltage, and the current load is light.
When audible noise occurs, setting the TPS652353 device to operate in Forced PWM mode is recommended. In Forced PWM mode, a special design is implemented to avoid the audible noise.