Design of Bootstrap Power Supply for Half-Bridge Circuits using Snubber Energy Regeneration

Se-Kyo Chung; Jung-Gyu Lim

Design of Bootstrap Power Supply for Half-Bridge Circuits using Snubber Energy Regeneration

Se-Kyo Chung

Jung-Gyu Lim

Vol. 7, No. 4, pp. 294-300, Oct. 2007

10.6113/JPE.2007.7.4.294

Bootstrap circuit

charge pump technique

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Abstract

This paper deals with a design of a bootstrap power supply using snubber energy regeneration, which is used to power a high-side gate driver of a half-bridge circuit. In the proposed circuit, the energy stored in the low-side snubber capacitor is transferred to the high-side bootstrap capacitor without any magnetic components. Thus, the power dissipation in the RCD snubber can be effectively reduced. The operation principle and design method of the proposed circuit are presented. The experimental results are also provided to show the validity of the proposed circuit.

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Cite this article

[IEEE Style]

S. Chung and J. Lim, "Design of Bootstrap Power Supply for Half-Bridge Circuits using Snubber Energy Regeneration," Journal of Power Electronics, vol. 7, no. 4, pp. 294-300, 2007. DOI: 10.6113/JPE.2007.7.4.294.

[ACM Style]

Se-Kyo Chung and Jung-Gyu Lim. 2007. Design of Bootstrap Power Supply for Half-Bridge Circuits using Snubber Energy Regeneration. Journal of Power Electronics, 7, 4, (2007), 294-300. DOI: 10.6113/JPE.2007.7.4.294.