Abstract
In this paper, a digitally controlled boost DC-DC power converter featuring a high-resolution Dyadic Digital Pulse Width Modulator (DDPWM) is proposed to achieve Limit-Cycle oscillations (LCOs)-free operation, high DC accuracy, low output voltage ripple at high switching frequency. The effectiveness of the DDPWM in suppressing the onset of LCOs, increasing DC accuracy, and reducing output ripple is verified by both Simulink/Modelsim co-simulations and experimental testing on a 7-10V input, 13.8V output boost converter operated at 1.17MHz switching frequency. Thanks to the proposed modulator, improvement of more than 6X DC accuracy is achieved compared to a plain digital PWM. Moreover, approximately 3X less output ripple in comparison to a digital PWM with thermometric dithering is achieved.
| Original language | English |
|---|---|
| Pages (from-to) | 9403-9414 |
| Number of pages | 12 |
| Journal | IEEE Access |
| Volume | 11 |
| DOIs | |
| State | Published - 2023 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2013 IEEE.
Keywords
- Digital pulse width modulator (DPWM)
- HDL verilog
- digitally controlled boost converter
- dyadic digital pulse width modulation (DDPWM)
- limit-cycles oscillations (LCOs)
- simulink/modelsim co-simulation
- switch-mode power converters
ASJC Scopus subject areas
- General Computer Science
- General Materials Science
- General Engineering
- Electrical and Electronic Engineering
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