Switch-mode power supply

By integrated the original and sub -border control circuit of the switching power supply on the same chip, and using the millimeter -wave transmission circuit to achieve signal transmission, the problem of complex design, large volume and EMI interference in existing technologies, realized small volumes of small volume Design and EMI interference decrease.

WO2025015587A1PCT designated stage expired Publication Date: 2025-01-23DECO SEMICON(SHENZHEN) CO LTD
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Patent Information

Application Number
PCT/CN2023/108286
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-07-14
Filing Date
2023-07-20
Publication Date
2025-01-23

AI Technical Summary

Technical Problem

The existing switching power supply design is complex, large in size due to discrete components, and has large EMI interference.

Method used

Integrate the original edge control circuit and the auxiliary control circuit of the switching power supply to the same chip, and set the processor on a single chip to realize the signal transmission between the original and the vice -edge control circuit through the millimeter -wave transmission circuit to ensure the safety of safety Distance requirements.

Benefits of technology

The small volume design and EMI interference of the switching power supply have been realized, and the transmission speed and efficiency of the control signal are improved.

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Abstract

Disclosed in the present invention is a switch-mode power supply, comprising a primary-side control circuit and a secondary-side control circuit, and further comprising a processor and a millimeter-wave transmission circuit, wherein the primary-side control circuit, the secondary-side control circuit, the processor and the millimeter-wave transmission circuit are integrated on the same chip; the processor is connected to the primary-side control circuit by means of the millimeter-wave transmission circuit; and the processor is connected to the secondary-side control circuit. The requirement for a safe distance between the primary-side control circuit and the secondary-side control circuit is ensured by means of the degree of isolation of the millimeter-wave transmission circuit, and thus a single-chip design in which the primary-side control circuit and the secondary-side control circuit are combined is also realized. The single-chip design not only ensures a simplified design and small size for the switch-mode power supply, but can also reduce EMI interference. In addition, the control performed by the primary-side control circuit is directly implemented by the processor, and a control signal is transmitted by the processor by means of the millimeter-wave transmission circuit, and thus the transmission speed of the control signal is greatly increased, thereby achieving a short delay and high efficiency.
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Citation Information

Patent Citations

  • Synchronous rectifying control method and control device and switching power supply

    CN105281578A

  • Millimeter wave digital filtering control chip

    CN217691585U

  • Switching power supply based on millimeter waves

    CN218570097U

  • Millimeter-wave transmitting apparatus and millimeter-wave transmitting / receiving system

    JP2010050816A

  • Millimeter-wave isolation device

    US11611364B1