Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance
Piezoelectric resonators have shown promise as efficient, power-dense energy storage element alternatives to continue the miniaturization of DC-DC converters. However, practical piezoelectric resonators diverge from their ideal behavior due to spurious modes that cause high loss regions throughout t...
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Open Journal of Power Electronics |
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| Online Access: | https://ieeexplore.ieee.org/document/9616452/ |
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| author | Eric Stolt Weston D. Braun Lei Gu Jeronimo Segovia-Fernandez Sombuddha Chakraborty Ruochen Lu Juan Rivas-Davila |
| author_facet | Eric Stolt Weston D. Braun Lei Gu Jeronimo Segovia-Fernandez Sombuddha Chakraborty Ruochen Lu Juan Rivas-Davila |
| author_sort | Eric Stolt |
| collection | DOAJ |
| description | Piezoelectric resonators have shown promise as efficient, power-dense energy storage element alternatives to continue the miniaturization of DC-DC converters. However, practical piezoelectric resonators diverge from their ideal behavior due to spurious modes that cause high loss regions throughout their operating frequency range. Typically, control of piezoelectric resonator DC-DC converters is constrained to unidirectional power flow each resonant cycle for maximum efficiency operation. However, output power depends on the frequency with such control, which means the converter cannot operate at loads corresponding to spurious mode frequencies. This paper presents a fixed-frequency control mode utilizing the high-quality factor of piezoelectric resonators to avoid spurious modes. The fixed-frequency control enables efficient operation spanning the converter's full load range, demonstrated through a prototype DC-DC converter with a custom fabricated lithium niobate resonator. At a conversion ratio of 60 V to 30 V, spurious modes limit the converter's operating range from 33 W to 51 W using unidirectional power-constrained control, yet the fixed-frequency control extends operation from 33 W to 2 W. |
| format | Article |
| id | doaj-art-a1831e5ad5854907a47d549fb6148938 |
| institution | Kabale University |
| issn | 2644-1314 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Power Electronics |
| spelling | doaj-art-a1831e5ad5854907a47d549fb61489382025-01-31T00:02:16ZengIEEEIEEE Open Journal of Power Electronics2644-13142021-01-01258259010.1109/OJPEL.2021.31285099616452Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode AvoidanceEric Stolt0https://orcid.org/0000-0003-0198-5182Weston D. Braun1https://orcid.org/0000-0003-1363-2245Lei Gu2https://orcid.org/0000-0001-9556-6426Jeronimo Segovia-Fernandez3Sombuddha Chakraborty4https://orcid.org/0000-0003-0982-8296Ruochen Lu5https://orcid.org/0000-0003-0025-3924Juan Rivas-Davila6https://orcid.org/0000-0003-2494-85791Electrical Engineering Department, Stanford University, Stanford, CA, USA1Electrical Engineering Department, Stanford University, Stanford, CA, USA1Electrical Engineering Department, Stanford University, Stanford, CA, USA<sup>2</sup>Texas Instruments Inc., Dallas, TX, USA3Kilby Labs, Texas Instruments Inc., Santa Clara, CA, USA4Electrical and Computer Engineering Department, The University of Texas at Austin, Austin, TX, USA1Electrical Engineering Department, Stanford University, Stanford, CA, USAPiezoelectric resonators have shown promise as efficient, power-dense energy storage element alternatives to continue the miniaturization of DC-DC converters. However, practical piezoelectric resonators diverge from their ideal behavior due to spurious modes that cause high loss regions throughout their operating frequency range. Typically, control of piezoelectric resonator DC-DC converters is constrained to unidirectional power flow each resonant cycle for maximum efficiency operation. However, output power depends on the frequency with such control, which means the converter cannot operate at loads corresponding to spurious mode frequencies. This paper presents a fixed-frequency control mode utilizing the high-quality factor of piezoelectric resonators to avoid spurious modes. The fixed-frequency control enables efficient operation spanning the converter's full load range, demonstrated through a prototype DC-DC converter with a custom fabricated lithium niobate resonator. At a conversion ratio of 60 V to 30 V, spurious modes limit the converter's operating range from 33 W to 51 W using unidirectional power-constrained control, yet the fixed-frequency control extends operation from 33 W to 2 W.https://ieeexplore.ieee.org/document/9616452/DC-DC power converterspiezoelectric devices |
| spellingShingle | Eric Stolt Weston D. Braun Lei Gu Jeronimo Segovia-Fernandez Sombuddha Chakraborty Ruochen Lu Juan Rivas-Davila Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance IEEE Open Journal of Power Electronics DC-DC power converters piezoelectric devices |
| title | Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance |
| title_full | Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance |
| title_fullStr | Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance |
| title_full_unstemmed | Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance |
| title_short | Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance |
| title_sort | fixed frequency control of piezoelectric resonator dc dc converters for spurious mode avoidance |
| topic | DC-DC power converters piezoelectric devices |
| url | https://ieeexplore.ieee.org/document/9616452/ |
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