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US 10,483,794 B2Granted
Power continuation control circuit
AssigneeNanning Fugui Precision Industrial Co., Ltd.
InventorYi-Feng Wang
Life of this patent
Estimating the term…
Abstract
A power continuation control circuit includes a power supply circuit, a detection circuit, an energy storage circuit, a switch module, and a control circuit. The detection circuit is coupled to the power supply circuit. The switch module is coupled to the energy storage circuit. The control circuit is coupled to the switch module and the detection circuit. The power supply output terminal is coupled to the control circuit and the power supply circuit.
Claims10
A power continuation control circuit comprising:
- a power supply circuit configured to output a preset voltage;
- a detection circuit coupled to the power supply circuit, and configured to obtain the voltage outputted by the power supply circuit to determine whether the power supply circuit is powered normally;
- an energy storage circuit configured to store energy;
- a switch module coupled to the energy storage circuit, wherein the switch module comprises a first electronic switch and a second electronic switch;
- a control circuit coupled to the switch module and the detection circuit, and configured to output a first square wave signal with a first preset duty ratio according to a first signal outputted by the detection circuit, to control the first electronic switch and the second electronic switch to turn on or off resulting in that the energy storage circuit stores energy, and further configured to output a second square wave signal with a second preset duty ratio according to a second signal outputted by the detection circuit, to control the first electronic switch and the second electronic switch to turn on or off resulting in that the energy storage circuit supplies energy, wherein the control circuit comprises:
- a DC voltage output unit coupled to the detection circuit, and configured to output a first voltage signal when the first signal is outputted by the detection circuit, and further configured to output a second voltage signal when the second signal is outputted by the detection circuit;
- a triangle wave generator configured to produce a triangular wave with preset amplitude and frequency;
- and
- a voltage comparison unit coupled to the triangle wave generator and the DC voltage output unit, and configured to compare one of the first voltage signal and the second voltage signal outputted by the DC voltage output unit with the triangular wave, and further configured to output the square wave signal of the first preset duty ratio according the first voltage signal or the square wave signal of the second preset duty ratio according to the second voltage signal;
- and
- a power supply output terminal coupled to the control circuit and the power supply circuit, and configured to supply power to an external device.
8 more elements
A power continuation control circuit comprising:
- a power supply circuit configured to output a preset voltage;
- a detection circuit coupled to the power supply circuit, and configured to obtain the preset voltage outputted by the power supply circuit to determine whether the power supply circuit is powered normally;
- an energy storage circuit configured to store energy;
- a switch module coupled to the energy storage circuit, wherein the switch module comprises a first electronic switch and a second electronic switch;
- a control circuit coupled to the switch module and the detection circuit, and configured to output a first square wave signal with a first preset duty ratio according to a first signal outputted by the detection circuit, to control the first electronic switch and the second electronic switch to turn on or off resulting in that the energy storage circuit stores energy, and further configured to output a second square wave signal with a second preset duty ratio according to a second signal outputted by the detection circuit, to control the first electronic switch and the second electronic switch to turn on or off resulting in that the energy storage circuit supplies energy;
- and
- a power supply output terminal coupled to the control circuit and the power supply circuit, and configured to supply power to an external device, wherein the detection circuit comprises:
- a diode;
- a third voltage comparator with a third voltage comparator positive input terminal, a third voltage comparator reverse input terminal and a third voltage comparator output terminal, configured to judge whether the power supply circuit is powered normally according to a voltage difference between a voltage value of an anode of the diode and a voltage value of a cathode of the diode
- a second detection circuit comprises a second detection circuit first terminal and a second detection circuit second terminal, the second detection circuit first terminal coupled to the anode of the diode, the second detection circuit second terminal coupled to the third voltage comparator reverse input terminal, and configured to detect the voltage value of the anode of the diode;
- and
- a third detection circuit comprises a third detection circuit first terminal and a third detection circuit second terminal the third detection circuit first terminal coupled to the cathode of the diode, the third detection circuit second terminal coupled to the third voltage comparator positive input terminal, and configured to detect the voltage value of the cathode of the diode.
9 more elements
Dependencies are inferred from the claim text.