Integrated power factor correction (PFC) high-voltage half-bridge resonant and synchronous rectification AC/DC power module

A half-bridge resonance and synchronous rectification technology, which is applied in high-efficiency power electronics conversion, energy industry, electrical components, etc., can solve the problems of backward circuit technology, low conversion efficiency, poor electromagnetic compatibility, etc., and achieve no dynamic response current distortion, fast The effect of output dynamic response and wide input voltage range

Pending Publication Date: 2017-11-21
AEROSPACE CHANGFENG CHAOYANG POWER SUPPLY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these circuits have defects such as backward circuit technology, large volume, many peripheral components, low conversion efficiency, poor electromagnetic compatibility, and high cost.

Method used

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  • Integrated power factor correction (PFC) high-voltage half-bridge resonant and synchronous rectification AC/DC power module
  • Integrated power factor correction (PFC) high-voltage half-bridge resonant and synchronous rectification AC/DC power module
  • Integrated power factor correction (PFC) high-voltage half-bridge resonant and synchronous rectification AC/DC power module

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing and example the present invention will be further described

[0026] like figure 1 As shown, the input AC voltage is stepped down by the transformer T1, then rectified by the rectifier bridge BR1, and the filter capacitors C1 and C2 are connected to the input terminal of the three-terminal voltage regulator. The output terminal of the three-terminal voltage regulator is connected to the sampling circuit and the output filter Circuit, and finally get the DC voltage we need. This kind of AC / DC power conversion has defects such as large pressure drop loss, small output power, large volume, low efficiency, and poor EMI characteristics.

[0027] to solve figure 1 Existing defects, the current standard AC / DC power supply is solved in a modular way, such as figure 2 As shown, the input AC voltage passes through the filter and is directly connected to the rectification filter circuit without voltage transformation. The rectified...

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Abstract

The invention discloses an integrated power factor correction (PFC) high-voltage half-bridge resonant and synchronous rectification AC/DC power module. An input interference resistant and rectification filtering circuit, a PFC and control circuit, an LLC high-voltage half-bridge resonant and control circuit, a dual-quick-breaking intelligent control circuit, a voltage detection system reset IC circuit, a synchronous rectification circuit, a filtering circuit, a voltage stabilization circuit, an auxiliary power supply circuit and a protection circuit are mainly integrated to form a brand-new module design. The AC/DC power module has the characteristics of small size, high integration degree, light weight, high reliability, high efficiency, wide application range and the like; in the AC/DC power module, a plurality of advanced circuits are matched with one another, so that the defect of a traditional circuit is overcome, the protection function is optimized, and meanwhile, brand-new module AC/DC and DC/DC secondary conversion is perfectly achieved.

Description

technical field [0001] The invention relates to an integrated PFC high-voltage half-bridge resonant synchronous rectification AC / DC power supply module, which belongs to the technical field of AC / DC power supply modules. Background technique [0002] Usually, the standard AC / DC power supply has two connection methods, one is through the power frequency transformer transformation, and then through the rectification filter circuit, voltage stabilization circuit to become the required voltage, the other is the AC voltage directly through the The rectifier bridge is rectified and then filtered, and the DC / DC converter becomes the required voltage. When the output power is large, multiple parallel connections are needed to solve it. However, these circuits have defects such as backward circuit technology, large volume, many peripheral components, low conversion efficiency, poor electromagnetic compatibility, and high cost. Contents of the invention [0003] The present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/219H02M3/335H02M1/44H02M1/42
CPCH02M1/4241H02M1/44H02M3/33523H02M3/33569H02M7/219H02M7/2195Y02B70/10Y02P80/10
Inventor 张占荣刘建华高海燕
Owner AEROSPACE CHANGFENG CHAOYANG POWER SUPPLY
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