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power supply

A technology of power supply device and reference signal, applied in the direction of output power conversion device, electrical components, adjusting electrical variables, etc., can solve problems such as interference, overshoot, undershoot, etc. Effect

Inactive Publication Date: 2011-12-21
AU OPTRONICS CORP
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Problems solved by technology

However, since the MOSFET switch is actually a non-ideal element, when the modulation signal controls it to charge and discharge the inductance in the Boost converter, the switching of the modulation signal is too severe, which is prone to overshoot (Overshoot) and undershoot ( Undershoot) phenomenon, and this will cause the output voltage of the Boost converter to be unstable, which will have adverse effects on subsequent circuits, such as interference

Method used

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Embodiment Construction

[0015] The following is a detailed description of the embodiments in conjunction with the accompanying drawings, but the provided embodiments are not used to limit the scope of the present invention, and the description of the structure and operation is not used to limit the order of its execution, and any recombination of components The structure of the resulting device with equal efficacy is within the scope of the present invention. In addition, the drawings are for illustrative purposes only and are not drawn to original scale.

[0016] As used herein, "about", "approximately" or "approximately" generally means that the error or range of the value is within 20 percent, preferably within 10 percent, and more preferably It is within five percent. If there is no explicit statement in the text, the numerical values ​​mentioned are regarded as approximate values, that is, the error or range indicated by "about", "approximately" or "approximately".

[0017] Please refer to fi...

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Abstract

The present invention provides a power supply device, comprising: a reference signal generator, used to provide a reference signal; a proportional-integral fuzzy controller, coupled to the reference signal generator; and a DC-DC converter, coupled to the The proportional-integral fuzzy controller is used to generate a DC voltage signal; wherein, the proportional-integral fuzzy controller generates a first control signal to control the DC-DC converter according to the reference signal and the DC voltage signal. For the power supply device proposed by the present invention, since the control signals generated by the fuzzy controller are all digital signals, it can generate more precise control signals, thereby reducing overshoot and undershoot phenomena, and will not cause adverse effects on subsequent circuits .

Description

technical field [0001] The content of the present invention relates to a power supply device, and in particular to a fuzzy-controlled power supply device. Background technique [0002] For the DC power supply in the circuit, a DC-DC converter, such as a step-up (Boost) converter, is generally required. In the prior art, Boost converters generally perform boost operation by switching Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) on / off, and through the pulse width Modulation (Pulse Width Modulation, PWM) to generate a modulation signal to control the on / off of the MOSFET switch. However, since the MOSFET switch is actually a non-ideal element, when the modulation signal controls it to charge and discharge the inductance in the Boost converter, the switching of the modulation signal is too severe, which is prone to overshoot (Overshoot) and undershoot ( Undershoot) phenomenon, and this will cause the output voltage of the Boost converter to be unstable, which wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/00H02M1/08
Inventor 黄竑旻
Owner AU OPTRONICS CORP
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