ZHCSAI3F May 2012 – August 2024 TPS65131-Q1
PRODUCTION DATA
During shutdown, when connected to a power supply, a path from the power supply to the positive output conducts through the inductor and an external diode. Optionally, in oder to fully disconnect the positive output VPOS during shutdown, add an external p-MOSFET (Q1). The BSW pin controls the gate of the p-MOSFET. When choosing a proper p-MOSFET, the VGS and VGD voltage ratings must cover the input voltage range, the drain current rating must not be lower than the maximum input current flowing into the application, and conditions of the p-MOSFET operating area must fit.
If there is no intention to use an external p-MOSFET, leave the BSW pin floating.