Power supply device
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsWEI-CHIEH CHOU, DUEN-YI HO, CHUN-JEN CHEN, TSUNG-SHENG HUANG
Life of this patent
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Abstract
A power supply device includes a power supply unit and a feedback control unit. The power supply unit is configured for generating an electric potential to be provided to a load. The feedback control unit detects the electric potential and adjusts relevant parameters of the electrical potential to achieve predetermined values. The feedback control unit includes a first feedback circuit and a second feedback circuit electrically connected in series.
Claims15
A power supply device, comprising:
- a power supply unit configured for generating an electric potential provided to a load;
- and
- a feedback control unit electrically connected to the power supply unit;
- the feedback control unit detecting the electric potential and adjusting relevant parameters of the electrical potential to predetermined values;
- wherein the feedback control unit includes a first feedback circuit and a second feedback circuit electrically connected in series;
- wherein the first feedback circuit includes a first operational amplifier, an input end of the first operational amplifier electrically connected to the power supply unit via a first resistor and a first capacitor electrically connected in series, and further electrically connected to the power supply unit via a second resistor;
- an output end of the first operational amplifier electrically connected to the input end of the first operational amplifier via a third resistor and a second capacitor electrically connected in series;
- and further electrically connected to the input end of the first operational amplifier via a third capacitor;
- and
- wherein the second feedback circuit includes a second operational amplifier, an input end of the second operational amplifier electrically connected to the output end of the first operational amplifier via a fourth resistor and a fourth capacitor electrically connected in series, and further electrically connected to the output end of the first operational amplifier via a fifth resistor;
- an output end of the second operational amplifier electrically connected to the input end of the second operational amplifier via a sixth resistor and a fifth capacitor electrically connected in series, and further electrically connected to the input end of the second operational amplifier via a sixth capacitor.
A feedback control circuit electrically connected between a filtering circuit and a pulse width modulation circuit, the feedback control circuit comprising:
- a first feedback circuit and a second feedback circuit electrically connected in series;
- wherein the first feedback circuit comprises a first operational amplifier comprising a first input node, a second input node, and a first output node, the first input node is connected to the first output node via a first impedance circuit, and connected to the filtering circuit via a second impedance circuit;
- wherein the second feedback circuit comprises a second operational amplifier comprising a third input node, a fourth input node, and a second output node, the second output node connected to the third input node via a third impedance circuit, the second output node also connected to the pulse width modulation circuit, wherein the second input node is connected to the fourth input node and further connected to a voltage reference source, and wherein the first output node is connected to the third input node via a fourth impedance circuit.
Dependencies are inferred from the claim text.