A multimode digital controller IC for flyback converter with high accuracy primary-side feedback

Jian-ping QIU; Le-nian HE; Yu-lin WANG

doi:10.1631/jzus.C1200344

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A multimode digital controller IC for flyback converter with high accuracy primary-side feedback

电子工程 | Updated：2022-12-09

- A multimode digital controller IC for flyback converter with high accuracy primary-side feedback
- A multimode digital controller IC for flyback converter with high accuracy primary-side feedback
- 信息与电子工程前沿（英文） 2013年14卷第8期页码：652-662
- Affiliations：
  
  Institute of Very Large Scale Integrated Circuits Design, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  [ "Jian-ping QIU, qiujp@vlsi.zju.edu.cn" ]
  Le-nian HE, helenian@vlsi.zju.edu.cn
- Funds：
- DOI：10.1631/jzus.C1200344
  中图分类号： TN4
- 收稿：2012-12-03，
  
  修回：2013-;7-12，
  
  纸质出版：2013-08
- Accepted：
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A multimode digital controller IC for flyback converter with high accuracy primary-side feedback[J]. 信息与电子工程前沿（英文）, 2013,14(8):652-662.

Jian-ping QIU, Le-nian HE, Yu-lin WANG. A multimode digital controller IC for flyback converter with high accuracy primary-side feedback[J]. Frontiers of Information Technology & Electronic Engineering, 2013, 14(8): 652-662.
A multimode digital controller IC for flyback converter with high accuracy primary-side feedback[J]. 信息与电子工程前沿（英文）, 2013,14(8):652-662. DOI： 10.1631/jzus.C1200344.

Jian-ping QIU, Le-nian HE, Yu-lin WANG. A multimode digital controller IC for flyback converter with high accuracy primary-side feedback[J]. Frontiers of Information Technology & Electronic Engineering, 2013, 14(8): 652-662. DOI： 10.1631/jzus.C1200344.

摘要

Abstract

A digital controller IC for the flyback converter with primary-side feedback is proposed. The controller is used for adapter charger or LED driver applications. To obtain high accuracy for the primary-side feedback

a digital primary-side sensing technology is adopted

which can auto-track the knee point of the primary auxiliary winding voltage. Furthermore

an internal digital compensator eliminates the need for external loop compensation components while achieving excellent line and load regulation. The controller could output both constant voltage and constant current depending on the load current. Pulse width modulation and pulse frequency modulation are used in constant voltage mode while quasi-resonant control is used in constant current mode. The digital controller is validated by using FPGA.

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references

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