UNIVERSAL POWER ADAPTER

摘要

A charger circuit includes an interface connector that may be coupled to a power adapter that provides an input signal having an input voltage, and a buck-boost converter circuit that may be coupled to a battery having a charging voltage. At a given time, the buck-boost converter circuit operates in a mode in a group of modes based on a control signal, where the group of modes may include at least a buck mode and a boost mode. In particular, the charger circuit includes control logic that generates the control signal based on the charging voltage and a charging capability of the power adapter. Thus, if the charging voltage suitably exceeds the input voltage, the buck-boost converter circuit may operate in the boost mode. However, if the charging voltage is approximately less than or equal to the input voltage, the buck-boost converter circuit may operate in the buck mode.

主权项

1. A charger circuit, comprising:
an interface connector configured to couple to a power adapter; a buck-boost converter circuit, coupled to the interface connector, and configured to couple to a battery having a charging voltage and to provide an output signal to the battery, wherein, at a given time, the buck-boost converter circuit is configured to operate in a mode in a group of modes based on a control signal, and wherein the group of modes comprises: a buck mode and a boost mode; and control logic, coupled to the buck-boost converter circuit, configured to generate the control signal based on the charging voltage and information received via the interface connector.