Output Voltage Regulation Apparatus and Method
AssigneeHuawei Technologies Co., Ltd.
InventorsJiake Wang, Liang Chen, Peng Zou
Life of this patent
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Abstract
An output voltage regulation apparatus includes a voltage regulation circuit, a control circuit, a power stage circuit, a filtering network, and a feedback network. The feedback network is configured to output a feedback voltage to a feedback voltage node of the control circuit. The voltage regulation circuit is configured to regulate the feedback voltage. The control circuit is configured to switch on or off power transistors in the power stage circuit. The filtering network is configured to perform filtering on an output voltage of the power stage circuit to obtain the regulated output voltage.
Claims20
An output voltage regulation apparatus, comprising:
- a control circuit;
- a power stage circuit;
- a filtering network;
- a feedback network, wherein an input end of the feedback network is coupled to an output end of the filtering network, wherein the input end of the feedback network is configured to acquire a regulated output voltage of the filtering network, wherein an output end of the feedback network is coupled to a feedback voltage node of the control circuit, and wherein the output end of the feedback network is configured to output a feedback voltage to the feedback voltage node of the control circuit;
- and
- a voltage regulation circuit, wherein an output end of the voltage regulation circuit is coupled between the output end of the feedback network and the feedback voltage node of the control circuit, wherein the voltage regulation circuit is configured to regulate the feedback voltage,
- wherein the control circuit is configured to:
- receive the feedback voltage;
- and
- switch on or off power transistors in the power stage circuit, and
- wherein the filtering network is configured to perform filtering on an output voltage of the power stage circuit to obtain the regulated output voltage.
An output voltage regulation method, comprising:
- acquiring a regulated output voltage of a filtering network;
- outputting a feedback voltage to a feedback voltage node of a control circuit using a feedback network;
- regulating the feedback voltage using a voltage regulation circuit;
- switching on or off power transistors in a power stage circuit using the control circuit;
- and
- performing filtering on an output voltage of the power stage circuit using the filtering network to obtain the regulated output voltage.
Dependencies are inferred from the claim text.