Battery charger reverse-boosting detection

摘要

Exemplary embodiments are related to detecting a reverse-boosting operation of a battery charger. A device may include a plurality of switches for receiving an input voltage at an input port and conveying an output voltage. The device may also include a first sensing device coupled to the input port configured to detect if an input current is less than a threshold current. Further, the device may include a second sensing device selectively coupled to the input port to detect if the input voltage is less than a threshold voltage.

主权项

1. A device for detecting a reverse-boosting operation upon removal of an input power supply from a battery charger, comprising:
a plurality of switches for receiving an input voltage at an input port and conveying an output voltage; a first sensing device coupled to the input port configured to detect if an input current is less than a threshold current; a second sensing device selectively coupled to the input port to detect if the input voltage is less than a threshold voltage; and a control module coupled to an output of each of the first sensing device and the second sensing device and configured to disable the device if the input current is less than the threshold current and the input voltage is less than the threshold voltage.