Unlock instant, AI-driven research and patent intelligence for your innovation.

Power supply apparatus

A power supply device and circuit technology, applied in the direction of output power conversion devices, energy industry, electronic switches, etc., can solve the problems of inability to achieve high conversion efficiency and achieve high conversion efficiency

Inactive Publication Date: 2017-07-21
LITE ON ELECTRONICS (GUANGZHOU) LTD +1
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since existing power supply devices are usually carefully designed for a specific output voltage, therefore, existing power supply devices cannot have relatively high conversion efficiency at various specific settings of the output voltage and the load

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power supply apparatus
  • Power supply apparatus
  • Power supply apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

[0048] refer to figure 1 A first embodiment of the power supply device of the present invention is suitable for being electrically connected to a voltage source 8 to receive an AC input voltage Vin, and convert the input voltage Vin into a DC output voltage Vout. The power supply device of this embodiment includes an EMI filter 1 , a rectifier 2 , a power factor corrector 3 , a flyback converter 4 and a controller 7 . The controller 7 includes a first control module 5 and a second control module 6 .

[0049] The EMI filter 1 is adapted to be electrically connected to the voltage source 8 to receive the input voltage Vin, and to filter the input voltage Vin to generate a filtered voltage.

[0050] The rectifier 2 is electrically connected to the EMI filter 1 to receive the filtered voltage, and rectifies the fil...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A power supply apparatus includes a flyback converter and a controller. The flyback converter generates an output voltage according to a bulk voltage, and includes a transformer and a switch electrically connected with the transformer, and the output voltage is stabilized at a selected one of a plurality of predetermined voltage values. The controller generates, in response to the output voltage, a control signal associated with the selection of the predetermined voltage values. Based at least on the output voltage and the control signal, the controller generates a feedback voltage associated with loading of the power supply apparatus, and controls the switch in such a manner that the switch operates at a switching frequency associated with the feedback voltage, and that at least one of the feedback voltage or a curve of the switching frequency with respect to the feedback voltage changes due to the control signal.

Description

technical field [0001] The invention relates to a power conversion technology, in particular to a power supply device. Background technique [0002] An existing power supply using a power factor corrector and a quasi-resonant flyback converter converts an AC input voltage to a DC output voltage. The output voltage is stabilized at a selected one of a plurality of predetermined voltage values. A current provided by the existing power supply device depends on its own loading. Since existing power supply devices are usually carefully designed for a specific output voltage, the conventional power supply devices cannot have relatively high conversion efficiency under various specific settings of the output voltage and the load. Contents of the invention [0003] The object of the present invention is to provide a power supply device capable of overcoming the disadvantages of the prior art. [0004] The power supply device of the present invention includes a flyback converter...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/217H02M1/12H02M3/335
CPCH02M1/12H02M3/33561H02M7/2173H02M3/33523H02M1/42H02M1/44H02M3/33507H03K5/00006Y02B70/10Y02P80/10H02M1/0025H02M1/0009H02M1/08H03K17/687
Inventor 颜铭川宫志华
Owner LITE ON ELECTRONICS (GUANGZHOU) LTD