<  Back to the Polytechnique Montréal portal

An Active Dead-Time Control Circuit With Timing Elements for a 45-V Input 1-MHz Half-Bridge Converter

Mousa Karimi, Mohamed Ali, Ahmad Hassan, Mohamad Sawan and Benoit Gosselin

Article (2022)

Open Access document in PolyPublie
Open Access to the full text of this document
Accepted Version
Terms of Use: All rights reserved
Download (3MB)
Show abstract
Hide abstract


In this study, a dead-time control circuit is proposed to generate independent delays for the high and low sides of half-bridge converter switches. In addition to greatly decreasing the losses of power converters, the proposed method mitigates the shoot-through current through the application of superimposed power switches. The circuit presented here comprises a switched capacitor architecture and is implemented in AMS 0.35 μm technology. In the implementation, the proposed dead-time control circuit occupies a silicon area of 70μm×180μm . To realize the technique, a two-sided wide swing current source is employed. Each sides of the current source comes with two capacitors, two Schmitt triggers, and three transmission gates. Results show that the low and high sides of the projected half-bridge converter switches respectively require delays of 35 and 62 ns. The performance of the proposed dead-time circuit is evaluated by assembling it with the half-bridge converter. The proposed dead-time prototype achieves a 40% drop in power losses in the half-bridge circuit.

Uncontrolled Keywords

Power management; half-bridge; switched capacitors; dead-time control circuit; power losses; power converters; shoot-through

Subjects: 2500 Electrical and electronic engineering > 2500 Electrical and electronic engineering
Department: Department of Electrical Engineering
Research Center: Polystim - Neurotechnology Laboratory
PolyPublie URL: https://publications.polymtl.ca/49499/
Journal Title: IEEE Transactions on Circuits and Systems I: Regular Papers (vol. 69, no. 1)
Publisher: IEEE
DOI: 10.1109/tcsi.2021.3096522
Official URL: https://doi.org/10.1109/tcsi.2021.3096522
Date Deposited: 18 Apr 2023 14:58
Last Modified: 25 May 2023 04:12
Cite in APA 7: Karimi, M., Ali, M., Hassan, A., Sawan, M., & Gosselin, B. (2022). An Active Dead-Time Control Circuit With Timing Elements for a 45-V Input 1-MHz Half-Bridge Converter. IEEE Transactions on Circuits and Systems I: Regular Papers, 69(1), 30-41. https://doi.org/10.1109/tcsi.2021.3096522


Total downloads

Downloads per month in the last year

Origin of downloads


Repository Staff Only

View Item View Item