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Double-output power supplier

A dual-input power supply and supply technology, which is applied to instruments, DC power input conversion to DC power output, AC power input conversion to DC power output, etc., can solve problems such as inability to isolate input and output

Inactive Publication Date: 2009-07-08
CHICONY POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The known DC / DC boost converter uses a metal oxide semiconductor field effect transistor 15 (MOSFET) as a synchronous rectification element. The metal oxide semiconductor field effect transistor 15 has a body diode 13 (Body diode) and cannot completely conduction, so it is impossible to isolate the input and output to produce a protection function, which needs to be improved

Method used

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Embodiment Construction

[0028] Please refer to figure 1 , showing a block diagram of the dual-input power supply of the present invention. The dual-input power supply 10 of the present invention includes: a dual-input terminal, the dual-input terminal is the first input terminal 12 and the second input terminal 14; a connector 17, the connector 17 is an integrated magnetic component; a power conversion circuit 20 , the power conversion circuit 20 has an AC / DC converter 22 , a DC / DC converter 24 , a filter circuit 25 , a feedback circuit 26 ; and an output terminal 16 .

[0029] Please continue to refer figure 1 , in this embodiment, the aforementioned first input end 12 is used for an AC power input, the aforementioned second input end 14 is used for a DC power input, and the aforementioned connector 17 is used for connecting and integrating the aforementioned first input end 12 The input power of the different power signal from the second input terminal 14, and the AC / DC converter 22 of the afor...

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Abstract

The dual-input power supply of the present invention includes: a dual-input terminal, a connector, a power conversion circuit, and an output terminal, wherein the aforementioned dual-input terminal is a first input terminal and a second input terminal, and the aforementioned connector is an integrated magnetic component , which is used to integrate the input power of the different power signals of the aforementioned first input end and the second input end, and the aforementioned power conversion circuit includes: AC / DC converter, DC / DC converter, feedback circuit, and filter circuit, wherein two The input terminal shares a transformer coil group or an inductance coil to reduce the size of the power supply.

Description

technical field [0001] The invention relates to a dual-input power supply, in particular to a dual-input power supply with integrated magnetic components. Background technique [0002] Common electronic devices, such as notebook computers, personal digital assistants, and mobile phones, all require an AC / DC converter to provide the DC power required for the operation of the electronic devices. Generally speaking, besides the built-in battery, the AC / DC converter is another important source of power supply in the electronic device. [0003] In recent years, more and more electronic products require high efficiency and low energy consumption. How to provide stable power supplies for these products and maintain the lowest energy consumption has become an important consideration. With the improvement of semiconductor technology, it is more and more common for semiconductor components (such as MOSFETs) to be used in same-frequency rectification power supply devices. As far as t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/10H02M3/135H02M7/155
Inventor 汪嘉华
Owner CHICONY POWER TECH CO LTD
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