A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter With Hysteresis-Voltage-Controlled Techniques
A low-noise fast-transient-response second-order delta-sigma-modulation buck converter with hysteresis-voltage-controlled techniques is proposed. With the proposed control approach, the transient time can be accelerated by roughly 60%. The rail-to-rail OTA generates a current I<sub>...
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IEEE
2022-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9795302/ |
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| author | Jiann-Jong Chen Yuh-Shyan Hwang Tz-Shiuan Tzeng Chien-Hung Lai Joshua Ku |
| author_facet | Jiann-Jong Chen Yuh-Shyan Hwang Tz-Shiuan Tzeng Chien-Hung Lai Joshua Ku |
| author_sort | Jiann-Jong Chen |
| collection | DOAJ |
| description | A low-noise fast-transient-response second-order delta-sigma-modulation buck converter with hysteresis-voltage-controlled techniques is proposed. With the proposed control approach, the transient time can be accelerated by roughly 60%. The rail-to-rail OTA generates a current I<sub>Sense</sub>, which replicates the inductor current I<sub>L</sub> with K times. As ISense flows through the capacitor C<sub>Sense</sub>, it will be converted into VSense. Then, the hysteresis-voltage-controlled (HVC) circuit compares the two terminal voltages of hysteresis comparator to detect the overshoot and undershoot of V<sub>Sense</sub>. Once V<sub>Sense</sub> is detected, the output signal of HVC circuits becomes opposite to the previous state to conduct M<sub>P</sub> and M<sub>N</sub> previously. Besides, the 2<sup>nd</sup>-order delta-sigma-modulation (DSM) circuit plays a vital role of mitigating noise-interference and elevating noise in whole circuits. The proposed converter has been fabricated in TSMC <inline-formula> <tex-math notation="LaTeX">$0.18~\mu \text{m}$ </tex-math></inline-formula> 1P6M CMOS processes with an active area of <inline-formula> <tex-math notation="LaTeX">$1.19\times 1.09$ </tex-math></inline-formula>mm<sup>2</sup>. The measured results show the transient time are <inline-formula> <tex-math notation="LaTeX">$3.5~\mu \text{s}$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$3.2~\mu \text{s}$ </tex-math></inline-formula>, respectively, when the load current changes between 500mA and 100mA. On the basic of the measured results of fast-fourier-transform (FFT), the value of output-to-noise ratio (ONR) is 76.6dB at the sampling frequency of 10MHz. The peak conversion efficiency is 92.1% while the load current is 300mA. |
| first_indexed | 2024-04-12T13:58:01Z |
| format | Article |
| id | doaj.art-956288d9ae1f4a25a52585f9790e5e88 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-12T13:58:01Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
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| series | IEEE Access |
| spelling | doaj.art-956288d9ae1f4a25a52585f9790e5e882022-12-22T03:30:18ZengIEEEIEEE Access2169-35362022-01-0110630636307210.1109/ACCESS.2022.31830289795302A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter With Hysteresis-Voltage-Controlled TechniquesJiann-Jong Chen0https://orcid.org/0000-0003-2990-3572Yuh-Shyan Hwang1https://orcid.org/0000-0002-1486-4059Tz-Shiuan Tzeng2Chien-Hung Lai3https://orcid.org/0000-0003-1391-0639Joshua Ku4Department of Electronic Engineering, National Taipei University of Technology, Taipei, TaiwanDepartment of Electronic Engineering, National Taipei University of Technology, Taipei, TaiwanDepartment of Electronic Engineering, National Taipei University of Technology, Taipei, TaiwanDepartment of Electronic Engineering, National Taipei University of Technology, Taipei, TaiwanDepartment of Electrical Engineering, California State University, Fullerton, Fullerton, CA, USAA low-noise fast-transient-response second-order delta-sigma-modulation buck converter with hysteresis-voltage-controlled techniques is proposed. With the proposed control approach, the transient time can be accelerated by roughly 60%. The rail-to-rail OTA generates a current I<sub>Sense</sub>, which replicates the inductor current I<sub>L</sub> with K times. As ISense flows through the capacitor C<sub>Sense</sub>, it will be converted into VSense. Then, the hysteresis-voltage-controlled (HVC) circuit compares the two terminal voltages of hysteresis comparator to detect the overshoot and undershoot of V<sub>Sense</sub>. Once V<sub>Sense</sub> is detected, the output signal of HVC circuits becomes opposite to the previous state to conduct M<sub>P</sub> and M<sub>N</sub> previously. Besides, the 2<sup>nd</sup>-order delta-sigma-modulation (DSM) circuit plays a vital role of mitigating noise-interference and elevating noise in whole circuits. The proposed converter has been fabricated in TSMC <inline-formula> <tex-math notation="LaTeX">$0.18~\mu \text{m}$ </tex-math></inline-formula> 1P6M CMOS processes with an active area of <inline-formula> <tex-math notation="LaTeX">$1.19\times 1.09$ </tex-math></inline-formula>mm<sup>2</sup>. The measured results show the transient time are <inline-formula> <tex-math notation="LaTeX">$3.5~\mu \text{s}$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$3.2~\mu \text{s}$ </tex-math></inline-formula>, respectively, when the load current changes between 500mA and 100mA. On the basic of the measured results of fast-fourier-transform (FFT), the value of output-to-noise ratio (ONR) is 76.6dB at the sampling frequency of 10MHz. The peak conversion efficiency is 92.1% while the load current is 300mA.https://ieeexplore.ieee.org/document/9795302/Buck converterfast-transient-responsedelta-sigma-modulator (DSM)hysteresis-voltage-controlled (HVC)rail-to-rail OTA |
| spellingShingle | Jiann-Jong Chen Yuh-Shyan Hwang Tz-Shiuan Tzeng Chien-Hung Lai Joshua Ku A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter With Hysteresis-Voltage-Controlled Techniques IEEE Access Buck converter fast-transient-response delta-sigma-modulator (DSM) hysteresis-voltage-controlled (HVC) rail-to-rail OTA |
| title | A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter With Hysteresis-Voltage-Controlled Techniques |
| title_full | A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter With Hysteresis-Voltage-Controlled Techniques |
| title_fullStr | A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter With Hysteresis-Voltage-Controlled Techniques |
| title_full_unstemmed | A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter With Hysteresis-Voltage-Controlled Techniques |
| title_short | A Low-Noise Fast-Transient-Response Delta-Sigma-Modulation Buck Converter With Hysteresis-Voltage-Controlled Techniques |
| title_sort | low noise fast transient response delta sigma modulation buck converter with hysteresis voltage controlled techniques |
| topic | Buck converter fast-transient-response delta-sigma-modulator (DSM) hysteresis-voltage-controlled (HVC) rail-to-rail OTA |
| url | https://ieeexplore.ieee.org/document/9795302/ |
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