Texas Instruments Incorporated
Battery sensing voltage controller

Abstract:

A battery pack includes a housing, a battery, a battery pack output voltage path that includes a charge power switch and a discharge power switch, and a battery sense output. A switch can be operably coupled between the battery and the battery sense output and configured to selectively open and close a battery sense path between the battery and the battery sense output. By one approach a first control circuit controls the open and close state of the aforementioned switch (in response, for example, to a comparison of the voltage differential across the switch to a predetermined threshold such that the switch is opened when the voltage differential across the switch becomes too positive or too negative with respect to battery voltage).