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Digital switching power supply

A technology of digital switching power supply and auxiliary power supply, which is applied in the direction of electrical components, adjusting electric variables, instruments, etc., can solve the problems of digital switching power supply, such as unreliable performance and poor stability performance, so as to improve control flexibility, stability and speed, The effect of high load regulation

Inactive Publication Date: 2019-05-07
张学一
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  • Description
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  • Application Information

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Problems solved by technology

Moreover, the existing digital switching power supply is not widespread and its reliability, flexibility, stability, etc. are not good.

Method used

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  • Digital switching power supply

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Embodiment Construction

[0017] combined with figure 1 Shown, a kind of digital switching power supply of the present invention is made up of power main circuit, auxiliary power supply circuit and DSP control circuit, it is characterized in that: described power main circuit is made of AC input EMI anti-electromagnetic interference power supply filter, rectifier filter, Composed of a high-frequency converter and a high-frequency rectification filter output circuit, the signal output end of the AC input EMI anti-electromagnetic interference power filter is connected to the signal input end of the rectification filter, and the signal output end of the rectification filter is connected to the high-frequency The signal input end of the converter, the signal output end of the high-frequency converter is connected with the high-frequency rectification filter output circuit; the signal output end of the rectification filter is also connected with the auxiliary power circuit, and the DC signal of the auxiliary...

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Abstract

The invention discloses a digital switching power supply, which is composed of a main power circuit, an auxiliary power supply circuit and a DSP control circuit. The main power circuit is composed ofan AC input EMI anti-electromagnetic-interference power filter, a rectifier filter, a high-frequency converter and a high-frequency rectifier and filter output circuit. The signal output end of the ACinput EMI anti-electromagnetic-interference power filter is connected with the signal input end of the rectifier filter, the signal output end of the rectifier filter is connected with the signal input end of the high-frequency converter, and the signal output end of the high-frequency converter is connected with the high-frequency rectifier and filter output circuit. The signal output end of therectifier filter is also connected with the auxiliary power supply circuit, and the DC electrical signal output end of the auxiliary power supply circuit is connected with the DSP control circuit. Effective control on the switching power supply can be realized. The control circuit can be simplified, and the reliability of the equipment can be improved. Moreover, the digital switching power supplyhas advantages such as flexible control, fast stabilization and high load adjustment rate, and can be popularized and applied in the field of switching power supplies.

Description

technical field [0001] The invention belongs to the technical field of modern power electronics, and in particular relates to a digital switching power supply. Background technique [0002] Switching power supply is a kind of power supply that uses modern power electronic technology to control the time ratio of switching on and off to maintain a stable output voltage. Switching power supply is generally composed of pulse width modulation (PWM) control IC and MOSFET. With the development and innovation of power electronics technology, switching power supply technology is constantly innovating. At present, switching power supply is widely used in almost all electronic devices due to its small size, light weight and high efficiency. It is an indispensable power supply method for the rapid development of today's electronic information industry. Due to its small size, light weight and high efficiency, switching power supply is widely used in electronic computers, household appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02M1/44H02M7/06
Inventor 张学一
Owner 张学一
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