Patent ID: 8248035
Filing Date: 2012-08-21
Classification: H02J,H02M

Abstract:
1. A voltage converting apparatus, comprising: an input interface to be connected to an adapter; a sense resistor connected to the input interface, to sense a voltage from the adapter; a plurality of power switches, to set the power rating of the adapter connected to the input interface; a comparator connected to the sense resistor, to receive a voltage from the adapter via the sense resistor, the comparator also connected to the plurality of power switches, to receive the voltage corresponding to the power rating of the adapter through setting one of the plurality of power switches, the comparator comparing the received voltage from the adapter with the voltage corresponding to the power rating and outputting a control signal; a first control switch comprising a control terminal connected to an output terminal of the comparator, a first terminal connected to the sense resistor, and a second terminal, the comparator controlling the first terminal of the first control switch to connect to the second terminal of the first control switch when the adapter is at a little traffic state, the comparator controlling the first terminal of the first control switch to disconnect to the second terminal of the first control switch when the adapter is at a fully loaded state; a voltage converter connected to the second terminal of the first control switch, the voltage converter receiving the voltage from the adapter and converting the received voltage when the first terminal of the first control switch is connected to the second terminal of the first control switch; an output interface connected to the sense resistor, to connect to an electronic device, to provide the voltage from the adapter to the electronic device; and a plurality of output ports connected to the voltage converter, to provide the converted voltage from the voltage converter to electronic devices connected to the plurality of output ports.