A Comparator-Less Buck Converter with Fast Transient Response Using a Reactive Ramp Generator.
Saved in:
| Title: | A Comparator-Less Buck Converter with Fast Transient Response Using a Reactive Ramp Generator. |
|---|---|
| Authors: | Kim, Young-Kyu1 (AUTHOR) kkimyk0315@naver.com, Jang, Chung-Hee1 (AUTHOR), Shin, Dong-Hyun1 (AUTHOR), Baek, Kwang-Hyun1 (AUTHOR) kbaek@cau.ac.kr |
| Source: | Energies (19961073). Jan2025, Vol. 18 Issue 2, p307. 17p. |
| Subjects: | DC-to-DC converters, Pulse width modulation inverters, Transfer functions, Comparator circuits, Voltage |
| Abstract: | This paper introduces a voltage-mode DC-DC buck converter designed to address the challenges of high-frequency operation. The proposed comparator-less Reactive Ramp Generator (RRG) topology mitigates the issues associated with comparator delays, achieving a fast load transient response. By eliminating all comparators from the buck converter's control circuit, we prevent potential delay-induced malfunctions, thereby enhancing overall operational reliability. The rapid response of the RRG, enabled by a short feedback loop, allows for swift output voltage regulation during load transients. Replacing comparators in the PWM controller with inverters effectively removes delay issues without adding complexity. Since the proposed design retains the conventional voltage-mode transfer function, standard type-3 compensation is readily applicable. Operating with a 3.3 V input, the buck converter provides an output range from 0.65 V to 3.0 V, achieving a settling time of 0.802 µs for load changes from 200 mA to 1 A, and 1.27 µs for load changes from 1 A to 200 mA. The proposed architecture achieves a peak efficiency of 92.78% at 2.4 V and 600 mA. [ABSTRACT FROM AUTHOR] |
| Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| FullText | Links: – Type: pdflink Text: Availability: 1 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 182443649 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: A Comparator-Less Buck Converter with Fast Transient Response Using a Reactive Ramp Generator. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Kim%2C+Young-Kyu%22">Kim, Young-Kyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kkimyk0315@naver.com</i><br /><searchLink fieldCode="AR" term="%22Jang%2C+Chung-Hee%22">Jang, Chung-Hee</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shin%2C+Dong-Hyun%22">Shin, Dong-Hyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Baek%2C+Kwang-Hyun%22">Baek, Kwang-Hyun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kbaek@cau.ac.kr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Jan2025, Vol. 18 Issue 2, p307. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22DC-to-DC+converters%22">DC-to-DC converters</searchLink><br /><searchLink fieldCode="DE" term="%22Pulse+width+modulation+inverters%22">Pulse width modulation inverters</searchLink><br /><searchLink fieldCode="DE" term="%22Transfer+functions%22">Transfer functions</searchLink><br /><searchLink fieldCode="DE" term="%22Comparator+circuits%22">Comparator circuits</searchLink><br /><searchLink fieldCode="DE" term="%22Voltage%22">Voltage</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper introduces a voltage-mode DC-DC buck converter designed to address the challenges of high-frequency operation. The proposed comparator-less Reactive Ramp Generator (RRG) topology mitigates the issues associated with comparator delays, achieving a fast load transient response. By eliminating all comparators from the buck converter's control circuit, we prevent potential delay-induced malfunctions, thereby enhancing overall operational reliability. The rapid response of the RRG, enabled by a short feedback loop, allows for swift output voltage regulation during load transients. Replacing comparators in the PWM controller with inverters effectively removes delay issues without adding complexity. Since the proposed design retains the conventional voltage-mode transfer function, standard type-3 compensation is readily applicable. Operating with a 3.3 V input, the buck converter provides an output range from 0.65 V to 3.0 V, achieving a settling time of 0.802 µs for load changes from 200 mA to 1 A, and 1.27 µs for load changes from 1 A to 200 mA. The proposed architecture achieves a peak efficiency of 92.78% at 2.4 V and 600 mA. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=182443649 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/en18020307 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 307 Subjects: – SubjectFull: DC-to-DC converters Type: general – SubjectFull: Pulse width modulation inverters Type: general – SubjectFull: Transfer functions Type: general – SubjectFull: Comparator circuits Type: general – SubjectFull: Voltage Type: general Titles: – TitleFull: A Comparator-Less Buck Converter with Fast Transient Response Using a Reactive Ramp Generator. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Kim, Young-Kyu – PersonEntity: Name: NameFull: Jang, Chung-Hee – PersonEntity: Name: NameFull: Shin, Dong-Hyun – PersonEntity: Name: NameFull: Baek, Kwang-Hyun IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 01 Text: Jan2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19961073 Numbering: – Type: volume Value: 18 – Type: issue Value: 2 Titles: – TitleFull: Energies (19961073) Type: main |
| ResultId | 1 |
