JAJSHS0C March 2019 – March 2021 TPS92682-Q1
PRODUCTION DATA
The power MOSFET is required to sustain the maximum switch node voltage, VSW, and switch RMS current derived based on the converter topology. TI recommends a drain voltage VDS rating of at least 10% greater than the maximum switch node voltage to ensure safe operation.
The worst case MOSFET RMS current for Boost and Buck-Boost topology depends on the maximum output power, PO(MAX), and is calculated for Boost in Equation 11 and for Buck-Boost in Equation 12.
Select a MOSFET with low total gate charge, Qg, to minimize gate drive and switching losses.