JAJSOX4A march 2023 – june 2023 TPSM83100
PRODMIX
The TPSM83100 and TPSM83101 have input overvoltage protection which avoids any damage to the device in case the current flows from the output to the input and the input source cannot sink current (for example, a diode in the supply path).
If forced PWM mode is active, the current can go negative until it reaches the sink current limit. Once the input voltage threshold, VT+(IVP), is reached on the VIN pin, the protection disables forced PWM mode and only allows current to flow from VIN to VOUT. After the input voltage drops under the input voltage protection threshold, forced PWM mode can be activated again.