Hi
The schematic below is from ISP150x application note. The OTG application uses external charge pump to source 5V@100ma in the host mode. If the OTG application role is changed from Host to Device/ Peripheral powered from the connected USB Host, the VBUS line receives
5V from the host. The charge pump is in disabled state but since its output is connected directly to the VBUS on which we have 5V supplied by the host will it not cause any damage to the charge pump IC? Any suggestions or reference schematic for interfacing external charge pump with OTG controllers.Schematic :
Thanks
-Mahen J