Anti-interference motor driving circuit with current protection

A motor drive circuit, current protection technology, applied in emergency protection circuit devices, protection against overcurrent, circuit devices, etc., can solve the threat of personal safety and public property, the drive circuit is susceptible to external interference, and reduce the service life of the load. and other problems, to prevent the aging of circuit components or more serious accidents, improve the anti-interference ability and acquisition accuracy, and prolong the service life.

CN107070362AInactive Publication Date: 2017-08-18成都佰思汇信科技有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-08-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an anti-interference motor driving circuit with current protection. The anti-interference motor driving circuit comprises a rectification module, a DC / DC pulse constant-current module, a segmented constant-current output module and an anti-interference module. The anti-interference module is connected to a load through a current protection module and comprises a parallel-to-series converter, a filtering unit and a series-to-parallel converter. The output signal of the parallel-to-series converter is input into the series-to-parallel converter via the filtering unit. The output of the series-to-parallel converter is input into the current protection module. According to such structured anti-interference motor driving circuit with current protection, the anti-interference module converts a parallel signal into a series signal by using the parallel-to-series converter so as to achieve good filtering, and converts, by using the series-to-parallel converter, the filtered series signal into the parallel signal for driving control so as to achieve a good anti-interference effect and an overcurrent protection effect. Further, the anti-interference motor driving circuit is provided with an over-temperature protection module so as to be provided with more protection, and has a wide application range.
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Description

technical field

[0001] The present invention relates to the technical field of integrated circuits, in particular to the technical field of drive circuit protection, in particular to an anti-interference motor drive circuit with current protection. Background technique

[0002] In today's society, various electrical equipment are used more and more widely in daily life, and are closely related to people's life. For the motors commonly used in various electrical equipment, it is inevitable to be subject to various interferences during the transmission of the drive signal. Due to the existence of interference, the control signal will be inaccurate, there will be large fluctuations, precise control cannot be achieved, and overcurrent and overload may occur. Interference sources in practical applications are generally divided into external interference and internal interference. The main sources of external interference are: fluctuations in the power grid, start and stop of lar...

Examples

Embodiment Construction

[0017] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0018] In order to achieve the above object, the present invention provides an anti-interference motor drive circuit with current protection, such as figure 1 As shown, the driving circuit of the present invention includes a rectification module, a DC / DC pulse constant current module, a segmented constant current output module and an anti-interference module, and the input AC voltage passes through the rectification module, the DC / DC pulse constant current module in sequence , the segmented constant current output module is input to the anti-jamming module, the anti-jamming module is connected to the load through the current protection module, and the anti-jamming module includes a parallel-to-serial converter, a filter unit and a serial-to-parallel converter, including The output signal of the parallel-ser...