A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism
In this paper, a triangular spread-spectrum mechanism is proposed to suppress the electromagnetic interference (EMI) of a DC-DC buck converter. The proposed triangular spread-spectrum mechanism, which is implemented in the chip, can avoid modifying the printed circuit board of switching regulators....
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-02-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/13/4/856 |
| _version_ | 1811300532949614592 |
|---|---|
| author | Jing-Yuan Lin Yi-Chieh Hsu Yo-Da Lin |
| author_facet | Jing-Yuan Lin Yi-Chieh Hsu Yo-Da Lin |
| author_sort | Jing-Yuan Lin |
| collection | DOAJ |
| description | In this paper, a triangular spread-spectrum mechanism is proposed to suppress the electromagnetic interference (EMI) of a DC-DC buck converter. The proposed triangular spread-spectrum mechanism, which is implemented in the chip, can avoid modifying the printed circuit board of switching regulators. In addition, a lower ripple of output voltage of switching regulators and a better system stability can be realized by the inductive DC resistance (DCR) current sensing circuit. The chip is fabricated by using TSMC 0.18-μm 1P6M CMOS technology. The chip area including PADs is 1.2 × 1.15 mm<sup>2</sup>. The input voltage range is 2.7~3.3 V and the output voltage is 1.8 V. The maximum load current is 700 mA. The off-chip inductor and capacitor are 3.3 μH and 10 μF, respectively. The experimental results demonstrate that the maximum spur of the proposed DC-DC buck converter with the triangular spread-spectrum mechanism improves to 14dBm. Moreover, the transient recovery time of step-up and step-down loads are both 5 μs. The measured maximum efficiency is 94% when the load current is 200 mA. |
| first_indexed | 2024-04-13T06:53:38Z |
| format | Article |
| id | doaj.art-e83afca3c6b4487b87af155a01d2479f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T06:53:38Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e83afca3c6b4487b87af155a01d2479f2022-12-22T02:57:20ZengMDPI AGEnergies1996-10732020-02-0113485610.3390/en13040856en13040856A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum MechanismJing-Yuan Lin0Yi-Chieh Hsu1Yo-Da Lin2Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, TaiwanDepartment of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, TaiwanDepartment of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, TaiwanIn this paper, a triangular spread-spectrum mechanism is proposed to suppress the electromagnetic interference (EMI) of a DC-DC buck converter. The proposed triangular spread-spectrum mechanism, which is implemented in the chip, can avoid modifying the printed circuit board of switching regulators. In addition, a lower ripple of output voltage of switching regulators and a better system stability can be realized by the inductive DC resistance (DCR) current sensing circuit. The chip is fabricated by using TSMC 0.18-μm 1P6M CMOS technology. The chip area including PADs is 1.2 × 1.15 mm<sup>2</sup>. The input voltage range is 2.7~3.3 V and the output voltage is 1.8 V. The maximum load current is 700 mA. The off-chip inductor and capacitor are 3.3 μH and 10 μF, respectively. The experimental results demonstrate that the maximum spur of the proposed DC-DC buck converter with the triangular spread-spectrum mechanism improves to 14dBm. Moreover, the transient recovery time of step-up and step-down loads are both 5 μs. The measured maximum efficiency is 94% when the load current is 200 mA.https://www.mdpi.com/1996-1073/13/4/856constant on-time controlelectromagnetic interferencespread-spectrum mechanismbuck converter |
| spellingShingle | Jing-Yuan Lin Yi-Chieh Hsu Yo-Da Lin A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism Energies constant on-time control electromagnetic interference spread-spectrum mechanism buck converter |
| title | A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism |
| title_full | A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism |
| title_fullStr | A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism |
| title_full_unstemmed | A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism |
| title_short | A Low EMI DC-DC Buck Converter with a Triangular Spread-Spectrum Mechanism |
| title_sort | low emi dc dc buck converter with a triangular spread spectrum mechanism |
| topic | constant on-time control electromagnetic interference spread-spectrum mechanism buck converter |
| url | https://www.mdpi.com/1996-1073/13/4/856 |
| work_keys_str_mv | AT jingyuanlin alowemidcdcbuckconverterwithatriangularspreadspectrummechanism AT yichiehhsu alowemidcdcbuckconverterwithatriangularspreadspectrummechanism AT yodalin alowemidcdcbuckconverterwithatriangularspreadspectrummechanism AT jingyuanlin lowemidcdcbuckconverterwithatriangularspreadspectrummechanism AT yichiehhsu lowemidcdcbuckconverterwithatriangularspreadspectrummechanism AT yodalin lowemidcdcbuckconverterwithatriangularspreadspectrummechanism |