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Automotive switching power supply and control method thereof

A switching power supply and control method technology, applied in the direction of electrical components, output power conversion devices, etc., can solve the problems of unfavorable product performance consistency and product quality control, affecting radio AM reception performance, large operating frequency deviation, etc., to achieve Improve reception performance, avoid frequency overlap, and avoid interference

Inactive Publication Date: 2014-06-18
FORYOU GENERAL ELECTRONICS
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  • Summary
  • Abstract
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Problems solved by technology

[0004] 1.) The operating frequency of the switching power supply is fixed, because its operating frequency and its multiplier are in the radio AM frequency band, which will generate electromagnetic interference and seriously affect the AM reception performance of the radio
[0005] 2.) Due to the consistency of the IC process and the deviation of peripheral components, the switching power supply has a large deviation in the operating frequency of different machines, which is not conducive to the consistency of product performance and the control of product quality.

Method used

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  • Automotive switching power supply and control method thereof
  • Automotive switching power supply and control method thereof
  • Automotive switching power supply and control method thereof

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Embodiment Construction

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] like figure 1 As shown, it is a functional block diagram of a specific composition of the vehicle switching power supply in the embodiment of the present invention. The switching power supply for the vehicle includes a microprocessor and a switching power supply unit; wherein, the microprocessor is connected with the vehicle-mounted human-computer interaction unit, and is used to acquire the radio AM frequency set by the user through the human-computer interaction unit, and according to the The AM frequency determines the operating frequency of the switching powe...

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Abstract

The embodiment of the invention discloses an automotive switching power supply, which comprises a microprocessor and a switching power supply unit, wherein the microprocessor is connected with a vehicle-mounted human-machine interaction unit, and is used for acquiring radio amplitude modulation AM frequency set by a user through the human-machine interaction unit, and determining the working frequency of the switching power supply unit according to the AM frequency, the working frequency and double frequency thereof are different from the AM frequency, and the switching power supply unit is connected with the microprocessor and is used for supply power to vehicle-mounted electronic equipment under the working frequency.

Description

technical field [0001] The invention relates to the field of automotive electronics, in particular to an automotive switching power supply and a control method thereof. Background technique [0002] A switching power supply is a power supply that maintains a stable output voltage through the time ratio of the switch tube being turned on and off. It is generally composed of a pulse width modulation (PWM) control integrated circuit (IC), MOSFET, and an inductor. It is a device that realizes voltage conversion. . [0003] At present, the switching power supply has been widely used because of its high efficiency and high output power, but the vehicle (or vehicle) switching power supply has the following shortcomings: [0004] 1.) The operating frequency of the switching power supply is fixed, because its operating frequency and its multiplier are in the radio AM frequency band, which will generate electromagnetic interference and seriously affect the AM receiving performance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/44
Inventor 张晓龙罗浩菱邱逸炜龙林云
Owner FORYOU GENERAL ELECTRONICS
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