A high-efficiency heat-dissipation DC-DC power module

By adopting a structure combining an aluminum substrate and a copper heat sink in the DC-DC power module, setting up a heat dissipation array and through holes, and combining passive and active heat dissipation, the circuit layout is optimized, which solves the problems of low heat dissipation efficiency and difficulty in achieving electromagnetic compatibility, and realizes efficient and stable operation of the power module.

CN224343097UActive Publication Date: 2026-06-09NANJING NENZHI ELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING NENZHI ELECTRONICS TECH CO LTD
Filing Date
2025-07-24
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing DC-DC power modules have low heat dissipation efficiency during high-frequency conversion, resulting in high hot spot temperature, reduced lifespan, and difficulty in meeting stringent electromagnetic compatibility standards.

Method used

It adopts a structure combining an aluminum substrate and a copper heat sink, with a heat dissipation array and through holes. It combines passive and active heat dissipation, optimizes the circuit layout, and uses a high-frequency half-bridge PWM drive topology and synchronous rectification technology to enhance EMI control.

Benefits of technology

It significantly improves heat dissipation efficiency and electromagnetic compatibility, ensuring stable operation of the module in high-temperature environments, achieving higher power output, and meeting stringent standards.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of power conversion module technology, specifically disclosing a high-efficiency heat dissipation DC-DC power module, including a housing, a PCB circuit board, and a power module. The power module includes an input module, an output module, a filter protection circuit, a half-bridge inverter circuit, a transformer, and a filter circuit. The input module is electrically connected to the filter protection circuit. The half-bridge inverter circuit outputs the DC voltage from the filter protection circuit as a high-frequency square wave voltage. The transformer transforms the high-frequency square wave voltage, and the voltage after voltage transformation is filtered and rectified by the filter circuit. The filter circuit is electrically connected to the output module, outputting the filtered and rectified DC voltage to the output module. An aluminum substrate PCB circuit board is fixedly connected to the surface of the housing, and a copper heat sink is provided between the PCB circuit board and the aluminum substrate. This module ensures stable operation of the power module in high-temperature environments through the combination of the aluminum substrate PCB circuit board and the copper heat sink.
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