A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise
Due to ever-increasing demand for high-level integration, low power dissipation and high fidelity, Class D amplifier ICs (CDA ICs) need to feature very high power supply rejection ratio (PSRR), very low total harmonic distortion plus noise (THD + N), low output noise, high power-efficiency, low elec...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160566 |
| _version_ | 1826117670244712448 |
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| author | Ge, Tong He, Huiqiao Guo, Linfei Chang, Joseph Sylvester |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Ge, Tong He, Huiqiao Guo, Linfei Chang, Joseph Sylvester |
| author_sort | Ge, Tong |
| collection | NTU |
| description | Due to ever-increasing demand for high-level integration, low power dissipation and high fidelity, Class D amplifier ICs (CDA ICs) need to feature very high power supply rejection ratio (PSRR), very low total harmonic distortion plus noise (THD + N), low output noise, high power-efficiency, low electromagnetic interference (EMI), and fixed switching frequency. We propose a fully integrated filterless CDA IC embodying a novel loop-filter that simultaneously features an ultrahigh loop gain of >200 dB and high carrier attenuation of -10 dB. Due to the ultrahigh loop gain and high carrier attenuation, the linearity and PSRR of the CDA IC is significantly improved. The proposed CDA IC further embodies a novel deadtime circuit that can eliminate the false switching in the Class D output stage, hence reducing the EMI and further improving the linearity of the CDA IC. The proposed CDA IC simultaneously features an ultrahigh PSRR (>100 dB from 100 Hz to 1 kHz), very low THD + N (0.005%), very low output noise (16 μV), and low EMI (10 dB below the EN55022 Class B standard) - yet with fixed switching frequency (400 kHz). When benchmarked against state-of-the-art designs, our CDA IC features the highest PSRR, allowing hookup directly to the battery and features the lowest output noise. |
| first_indexed | 2024-10-01T04:31:05Z |
| format | Journal Article |
| id | ntu-10356/160566 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:31:05Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1605662022-07-26T08:52:19Z A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise Ge, Tong He, Huiqiao Guo, Linfei Chang, Joseph Sylvester School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Amplifier Noise Audio Amplifiers Due to ever-increasing demand for high-level integration, low power dissipation and high fidelity, Class D amplifier ICs (CDA ICs) need to feature very high power supply rejection ratio (PSRR), very low total harmonic distortion plus noise (THD + N), low output noise, high power-efficiency, low electromagnetic interference (EMI), and fixed switching frequency. We propose a fully integrated filterless CDA IC embodying a novel loop-filter that simultaneously features an ultrahigh loop gain of >200 dB and high carrier attenuation of -10 dB. Due to the ultrahigh loop gain and high carrier attenuation, the linearity and PSRR of the CDA IC is significantly improved. The proposed CDA IC further embodies a novel deadtime circuit that can eliminate the false switching in the Class D output stage, hence reducing the EMI and further improving the linearity of the CDA IC. The proposed CDA IC simultaneously features an ultrahigh PSRR (>100 dB from 100 Hz to 1 kHz), very low THD + N (0.005%), very low output noise (16 μV), and low EMI (10 dB below the EN55022 Class B standard) - yet with fixed switching frequency (400 kHz). When benchmarked against state-of-the-art designs, our CDA IC features the highest PSRR, allowing hookup directly to the battery and features the lowest output noise. 2022-07-26T08:52:19Z 2022-07-26T08:52:19Z 2019 Journal Article Ge, T., He, H., Guo, L. & Chang, J. S. (2019). A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise. IEEE Transactions On Power Electronics, 35(1), 789-799. https://dx.doi.org/10.1109/TPEL.2019.2915542 0885-8993 https://hdl.handle.net/10356/160566 10.1109/TPEL.2019.2915542 2-s2.0-85074200479 1 35 789 799 en IEEE Transactions on Power Electronics © 2019 IEEE. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Amplifier Noise Audio Amplifiers Ge, Tong He, Huiqiao Guo, Linfei Chang, Joseph Sylvester A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise |
| title | A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise |
| title_full | A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise |
| title_fullStr | A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise |
| title_full_unstemmed | A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise |
| title_short | A direct battery hookup filterless pulsewidth modulation class D amplifier with >100 dB PSRR for 100 Hz to 1 kHz, 0.005% THD+N and 16 μv Noise |
| title_sort | direct battery hookup filterless pulsewidth modulation class d amplifier with 100 db psrr for 100 hz to 1 khz 0 005 thd n and 16 μv noise |
| topic | Engineering::Electrical and electronic engineering Amplifier Noise Audio Amplifiers |
| url | https://hdl.handle.net/10356/160566 |
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