Skip to main content
SpringerLink
Log in

PSR CC/CV AC–DC converter with an adaptive high-precision closed-loop constant current control scheme

  • Original Article
  • Published:
Journal of Power Electronics Aims and scope Submit manuscript

Abstract

A primary-side regulation (PSR) constant current (CC) output and constant voltage (CV) output AC–DC converter is proposed and an adaptive high-precision closed-loop constant current control scheme is put forward in this paper. In the CC mode, the converter adopts the closed-loop control strategy to realize that the switching period adaptively converges to twice the demagnetization time, which realizes the CC output. In addition, exactly detecting the demagnetization time is a prerequisite for obtaining a high-precision output current. Therefore, a demagnetization time detection circuit is designed to provide accurate and reliable demagnetization information. The control IC was fabricated with the Nuvoton 0.5um BCD process, and a 5 V/2 A prototype circuit was implemented to verify its performance. Experimental results show that the CC deviation is within ± 1.4%, which is lower than the target value of ± 2.0%. Under different loads and AC inputs, the conversion efficiency in the CC mode varies between 76.3% and 80.7%.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11

Similar content being viewed by others

References

  1. Shao. J.: A highly accurate constant voltage (CV) and constant current (CC) primary side controller for offline applications. In: Proc. 28th Annu. IEEE Appl. Power Electron. Conf. Expo., pp. 3311–3316 (2013)

  2. He, L.Y., Chang, C.Y., Chen, C., Wang, L.: Design of a high accuracy PSR CC/CV AC–DC converter without auxiliary winding. IEEE Trans. Power Electron. 35(8), 8165–8172 (2020)

    Article  Google Scholar 

  3. Chang, C.Y., He, L.Y., Bian, B., Han, X.: Design of a highly accuracy PSR CC/CV AC–DC converter based on a cable compensation scheme without an external capacitor. IEEE Trans. Power Electron. 34(10), 9552–9561 (2019)

    Article  Google Scholar 

  4. Chen, Y., Chang, C.Y., Yang, P.L.: A novel primary-side controlled universal-input AC–DC LED driver based on a source-driving control scheme. IEEE Trans. Power Electron. 30(8), 4327–4335 (2015)

    Article  Google Scholar 

  5. Wang, Z.Y., Lai, X.Q., Wu, Q.: A PSR CC/CV flyback converter with accurate CC control and optimized CV regulation strategy. IEEE Trans. Power Electron. 32(9), 7045–7055 (2017)

    Article  Google Scholar 

  6. Chang, C.Y., Jiang, T.L., Yang, P.L., Xu, Y., Xu, C.X., Chen, Y.: Adaptive line voltage compensation scheme for a source-driving controlled AC–DC LED driver. IET Circuits Devices Syst. 11(1), 21–28 (2017)

    Article  Google Scholar 

  7. Zhu, Z.M., Wu, Q., Wang, Z.Y.: Self-compensating OCP control scheme for primary-side controlled flyback AC/DC converters. IEEE Trans. Power Electron. 32(5), 3673–3682 (2017)

    Article  Google Scholar 

  8. Wang, C., Xu, S., Lu, S.L., Sun, W.F.: A low-cost constant current control method for DCM and CCM in digitally controlled primary-side regulation flyback converter. IEEE J. Emerg. Sel. Topics Power Electron. 6(3), 1483–1494 (2018)

    Article  Google Scholar 

  9. Wu, C.N., Chen, Y.L., Chen, Y.M.: Primary-side peak current measurement strategy for high-precision constant output current control. IEEE Trans. Power Electron. 30(2), 967–975 (2015)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Microelectronics, Southeast University, Nanjing, China

    Yang Gu, Dongqian Ju, Lei Wang, Jie Ren & Changyuan Chang

Authors
  1. Yang Gu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Dongqian Ju
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Lei Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Jie Ren
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Changyuan Chang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Changyuan Chang.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Gu, Y., Ju, D., Wang, L. et al. PSR CC/CV AC–DC converter with an adaptive high-precision closed-loop constant current control scheme. J. Power Electron. 21, 965–973 (2021). https://doi.org/10.1007/s43236-021-00250-8

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s43236-021-00250-8

Keywords

Search

Navigation