SLVSEI1C June 2019 – October 2020 TPS62864 , TPS62866
PRODUCTION DATA
As the load current decreases, the device enters Power Save Mode (PSM) operation. PSM occurs when the inductor current becomes discontinuous, which is when it reaches 0 A during a switching cycle. Power Save Mode is based on a fixed on-time architecture, as shown in Equation 1.
In Power Save Mode, the output voltage rises slightly above the nominal output voltage. This effect is minimized by increasing the output capacitor or inductor value.