Power converter for providing output power limit and depending on load voltage adjustment

A power adapter and output voltage technology, which is applied in the direction of output power conversion device, current collector, regulating electric variable, etc., can solve high power loss, reduce the conversion efficiency of battery charger 108 and DC-DC converter 106, etc. problems, to achieve the effect of improving power efficiency, reducing circuit design complexity and manufacturing costs, and reducing power loss

Active Publication Date: 2008-01-16
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, considerable power loss will be generated on the battery charger 108 and the DC-DC converter 1

Method used

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  • Power converter for providing output power limit and depending on load voltage adjustment
  • Power converter for providing output power limit and depending on load voltage adjustment
  • Power converter for providing output power limit and depending on load voltage adjustment

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Embodiment Construction

[0074] Preferred embodiments embodying the features and advantages of the present invention will be described in detail in the ensuing description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and that the description and drawings therein are illustrative in nature and not intended to limit the present invention. invention.

[0075]A preferred embodiment of the invention is shown in FIG. 3 . As shown in FIG. 3 , the power adapter (power adapter) 300 is configured to convert an AC input voltage into an output DC voltage, and the output DC voltage is used to provide the power required for the operation of the portable computer 302 . The portable computer 302 has a battery pack (battery pack) 304 and a DC-DC converter (DC-DC converter) 306 inside, wherein the DC-DC converter 306 is set to convert the DC voltage provided by the power adapter 300 into portable The vo...

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PUM

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Abstract

The invention discloses a power supply adapter with a voltage limiting circuit. For the voltage limiting circuit, the output voltage of the limiting power supply adapter is a predetermined value when the output current of the power supply adapter is lower than the threshold current. For the power limiting circuit, the output power of the limiting power supply adapter is a predetermined value when the output current of the power supply adapter reach to the threshold current. Wherein, the voltage limiting circuit is set to receive the current control signal from the load and send load current adjusting signal to the switching control circuit of the power supply adapter according to the current control signal, thereby the output voltage of the power converting unit can be adjusted via the switching control circuit. The power supply adapter can flexibly adjust the output voltage and the load current according to the demand of the load, reducing the power loss of the load significantly, improving the power efficiency greatly, and lowering the design complexity of the load and the manufacturing cost.

Description

technical field [0001] The present invention relates to a power adapter, and more particularly, the present invention relates to a power adapter capable of providing output power limitation and load-dependent voltage regulation. Background technique [0002] FIG. 1 is a system block diagram of a conventional power supply system for a portable computer. As shown in FIG. 1 , a power adapter 100 is configured to convert an AC input voltage into an output DC voltage, and the output DC voltage is used to provide the power required for the operation of the portable computer 102 . The portable computer 102 has a battery pack (battery pack) 104 and a DC-DC converter (DC-DC converter) 106 inside, wherein the DC-DC converter 106 is set to convert the DC voltage provided by the power adapter 100 into a portable The voltage required by the internal components of the computer 102, and the battery pack 104 is set to provide power to operate the portable computer 102 when the portable com...

Claims

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Application Information

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IPC IPC(8): H02M7/155G05F1/46H02J7/02
Inventor 蒋进财
Owner DELTA ELECTRONICS INC
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