Zhi-hua Ning, Lenian He, Zhicheng Hu, G. Jin, W. Ng
{"title":"一种用于浮式降压DC-DC变换器的反馈电压感应转换器","authors":"Zhi-hua Ning, Lenian He, Zhicheng Hu, G. Jin, W. Ng","doi":"10.1109/EDSSC.2013.6628084","DOIUrl":null,"url":null,"abstract":"A feedback-voltage-sensing translator for floating buck DC-DC converter is designed for CSMC's 0.5 μm 60 V BCD process. The proposed circuit utilizes one NPN, one PNP and a resistor to translate a V<sub>in</sub>-referenced (input voltage as the reference, instead of GND) feedback voltage to a current, which is then translated to a ground-referenced voltage with another two bipolar transistors and one resistor. High precision translation is accomplished based on the equivalent base-emitter voltages of the bipolar transistors. Simulation results show that, for a V<sub>in</sub>-referenced feedback voltage of V<sub>fb</sub> = V<sub>in</sub> - V<sub>n</sub>, the proposed translator generates a ground-referenced voltage of V<sub>n</sub> with a variation of only 0.6 mV over a wide range of V<sub>in</sub> from 18 to 60 V. The translator also achieves a low temperature coefficient of 6.9 ppm/°C from -40 to 125 °C. Additionally, the noise of this translator is only 3.46 μV<sub>rms</sub> from 0.1 to 10 Hz and the PSR is -98 dB @ DC. The translator is verified via Spectre simulation in a floating buck converter.","PeriodicalId":333267,"journal":{"name":"2013 IEEE International Conference of Electron Devices and Solid-state Circuits","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A feedback-voltage-sensing translator for floating buck DC-DC converters\",\"authors\":\"Zhi-hua Ning, Lenian He, Zhicheng Hu, G. Jin, W. Ng\",\"doi\":\"10.1109/EDSSC.2013.6628084\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A feedback-voltage-sensing translator for floating buck DC-DC converter is designed for CSMC's 0.5 μm 60 V BCD process. The proposed circuit utilizes one NPN, one PNP and a resistor to translate a V<sub>in</sub>-referenced (input voltage as the reference, instead of GND) feedback voltage to a current, which is then translated to a ground-referenced voltage with another two bipolar transistors and one resistor. High precision translation is accomplished based on the equivalent base-emitter voltages of the bipolar transistors. Simulation results show that, for a V<sub>in</sub>-referenced feedback voltage of V<sub>fb</sub> = V<sub>in</sub> - V<sub>n</sub>, the proposed translator generates a ground-referenced voltage of V<sub>n</sub> with a variation of only 0.6 mV over a wide range of V<sub>in</sub> from 18 to 60 V. The translator also achieves a low temperature coefficient of 6.9 ppm/°C from -40 to 125 °C. Additionally, the noise of this translator is only 3.46 μV<sub>rms</sub> from 0.1 to 10 Hz and the PSR is -98 dB @ DC. The translator is verified via Spectre simulation in a floating buck converter.\",\"PeriodicalId\":333267,\"journal\":{\"name\":\"2013 IEEE International Conference of Electron Devices and Solid-state Circuits\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2013-06-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2013 IEEE International Conference of Electron Devices and Solid-state Circuits\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/EDSSC.2013.6628084\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 IEEE International Conference of Electron Devices and Solid-state Circuits","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/EDSSC.2013.6628084","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A feedback-voltage-sensing translator for floating buck DC-DC converters
A feedback-voltage-sensing translator for floating buck DC-DC converter is designed for CSMC's 0.5 μm 60 V BCD process. The proposed circuit utilizes one NPN, one PNP and a resistor to translate a Vin-referenced (input voltage as the reference, instead of GND) feedback voltage to a current, which is then translated to a ground-referenced voltage with another two bipolar transistors and one resistor. High precision translation is accomplished based on the equivalent base-emitter voltages of the bipolar transistors. Simulation results show that, for a Vin-referenced feedback voltage of Vfb = Vin - Vn, the proposed translator generates a ground-referenced voltage of Vn with a variation of only 0.6 mV over a wide range of Vin from 18 to 60 V. The translator also achieves a low temperature coefficient of 6.9 ppm/°C from -40 to 125 °C. Additionally, the noise of this translator is only 3.46 μVrms from 0.1 to 10 Hz and the PSR is -98 dB @ DC. The translator is verified via Spectre simulation in a floating buck converter.
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