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Monolithically Integrated PWM Circuit Based on AlGaN/GaN MIS-HMETs for All-GaN Smart Power System

  • Yi Shen
  • , Ziqian Li
  • , Ang Li
  • , Wen Liu
    • Xi'an Jiaotong-Liverpool University

    Research output: Contribution to journalConference articlepeer-review

    7 Citations (Scopus)

    Abstract

    This work investigates a monolithic integrated pulse width modulation (PWM) circuit based on aluminum-gallium-nitride/gallium-nitride (AlGaN/GaN) metal-insulator-semiconductor (MIS) high-electron-mobility transistors (HEMTs). The PWM circuit contains comparator, hysteresis comparator, and sawtooth generator, which all show stable performances. The PWM circuit is able to generate a 500 kHz high-frequency PWM signal with a 5.5 V swing and an adjustable duty cycle from 30% to 70%. These results exhibit a feasible example to achieve the all-GaN monolithic integration of signal and control blocks in smart power ICs by using GaN MIS-HMETs.

    Original languageEnglish
    JournalProceedings of International Conference on ASIC
    DOIs
    Publication statusPublished - 2021
    Event14th IEEE International Conference on ASIC, ASICON 2021 - Kunming, China
    Duration: 26 Oct 202129 Oct 2021

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