BATTERY CHARGER INTEGRATED CIRCUIT CHIP

摘要

An on-chip digital communication interface circuit is to be directly coupled to a counterpart interface circuit of a separate battery-side gas gauge circuit. An on-chip battery charging control circuit controls battery charging voltage and current that is supplied from a separate power source interface circuit to a battery cell terminal, according to charging voltage and current limits. The charging limits are read from the gas gauge circuit and in effect carry out a selected one of several different battery charging profiles. Other embodiments are also described and claimed.

主权项

1. An integrated circuit (IC) chip comprising:
an on-chip power source interface to obtain power from a separate power source; an on-chip digital communication interface circuit to be directly coupled to a counterpart interface circuit of a separate battery-side gas gauge circuit; and
an on-chip battery charging control circuit to control battery charging voltage and current at a battery cell terminal, using power that is supplied by the power source interface,the battery charging control circuit being coupled to the digital communication interface circuit to read battery charging voltage and current limits from the gas gauge circuit and to use the battery charging voltage and current limits to implement one of a plurality of different battery charging profiles.