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

Bridgeless PFC converter, control method thereof and packaged IC device

A converter and converter technology, applied in the direction of output power conversion device, high-efficiency power electronic conversion, irreversible AC power input conversion to DC power output, etc., can solve the problem of increasing the high-efficiency operation of bridgeless PFC converters, etc.

Active Publication Date: 2019-10-22
SEMICON COMPONENTS IND LLC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One challenge of such designs is to accurately sense the current within the bridgeless PFC converter in a manner that increases the efficient operation of the bridgeless PFC converter

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
  • Bridgeless PFC converter, control method thereof and packaged IC device
  • Bridgeless PFC converter, control method thereof and packaged IC device
  • Bridgeless PFC converter, control method thereof and packaged IC device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] This application claims the benefit of U.S. Provisional Application No. 62 / 655,598, entitled "CURRENT SENSING TECHNIQUE FOR TOTEM POLE BRIDGELESS PFC," filed April 10, 2018. Said provisional application is incorporated herein by reference as if reproduced in its entirety below.

[0047] The following discussion refers to various embodiments of the invention. Although one or more of these embodiments may be preferred, the disclosed embodiments should not be interpreted or otherwise used as limitations on the scope of the disclosure, including the claims. Furthermore, those skilled in the art will appreciate that the following description has broad application, and that discussion of any embodiments is intended to be illustrative of such embodiments only, and not intended to limit the scope of the present disclosure, including the claims, to such embodiments.

[0048] Various example embodiments relate to methods and systems for bridgeless power factor correction (PFC) c...

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

The invention relates to a bridgeless PFC converter, a control method thereof and a packaged IC device. Example embodiments are methods of operating a power converter including operating the power converter during a positive half-line cycle of an alternating current (AC) source by: charging an inductance through a low-side switch with a first charging current having a first polarity; measuring thefirst charging current using a low-side current transformer (CT), while shorting a secondary winding of a high-side CT; and discharging the inductance through a high-side switch with a first discharging current having the first polarity. Operating the power converter during a negative half-line cycle of the AC source by: charging the inductance through the high-side switch with a second chargingcurrent having a second polarity; measuring the second charging current using the high-side CT, while shorting a secondary winding of the low-side CT; and discharging the inductance through the low-side switch with a second discharging current having the second polarity.

Description

technical field [0001] The present application relates to the technical field of power converters, and in particular, to bridgeless power factor correction power converters. Background technique [0002] There is an increasing need for power converters with higher efficiency and smaller footprint. Recent attention to meeting said needs has focused on bridge rectifiers, and specific advances in bridgeless power factor correction (PFC) converters. One challenge of such designs is to accurately sense the current within the bridgeless PFC converter in a manner that increases the efficient operation of the bridgeless PFC converter. Any method or system that improves the accuracy of current sensing would provide a competitive advantage in the marketplace. Contents of the invention [0003] At least one example embodiment is a method of operating a power converter including operating the power converter during a positive half line cycle of an alternating current (AC) source and...

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): H02M1/42
CPCH02M1/4233H02M1/4225Y02B70/10H02M7/21H02M1/4208
Inventor 尼基莱什·S·卡马特阿尔曼多·加布里尔·梅萨阿贾伊·卡尔蒂克·哈里
Owner SEMICON COMPONENTS IND LLC