Dc-dc converter and a method for producing the same
AssigneeNVIDIA Corporation
InventorsShuang Xu, Weiwei Tang
Life of this patent
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Abstract
A DC-DC converter adopted in a mobile device, for converting a DC input voltage to a DC output voltage is provided. The converter comprises an input circuit, a control circuit, and a switch. The input circuit is connected in series with a line for supplying the DC input voltage and includes a parallel connection of a first capacitor and a snubber circuit. The control circuit is provided for producing a control signal. The switch, connected with the input circuit, is adapted to turn ON or OFF in accordance with the control signal, so as to produce the DC output voltage.
Claims16
A DC-DC converter for converting a DC input voltage to a DC output voltage, comprising:
- an input circuit connected with a line for supplying said DC input voltage and said input circuit comprising a parallel connection of a first capacitor and a snubber circuit;
- a control circuit for producing a control signal;
- and
- a switch connected with said input circuit and adapted to turn ON or OFF in accordance with said control signal, so as to produce said DC output voltage;
- wherein the quality factor of said parallel connection is lower than the quality factor of said first capacitor.
A method for producing a DC-DC converter for converting a DC input voltage to a DC output voltage, said DC-DC converter comprising a switch and a control circuit for producing a control signal to said switch, said method comprising:
- providing an input circuit connected with a line for supplying said DC input voltage, said input circuit having a parallel connection of a first capacitor and a snubber circuit;
- connecting said switch with said input circuit, wherein said switch is adapted to turn ON or OFF in accordance with said control signal to produce said DC output voltage;
- adjusting the quality factor of said input circuit by selecting said snubber circuit, to make the drop of said input voltage not to exceed a predetermined percentage when said switch is turned OFF;
- and
- embedding said selected snubber circuit into said input circuit.
Dependencies are inferred from the claim text.