{"title":"载波拓扑结构对助听器开环D类放大器PSRR和PS-IMD的影响","authors":"Linfei Guo, T. Ge, J. Chang","doi":"10.1109/CASME.2010.5706685","DOIUrl":null,"url":null,"abstract":"Open-Loop Pulse Width Modulation (PWM) Class D amplifiers are attractive for power critical applications including hearing aids due to their simple hardware and high power-efficiency. Nevertheless, a drawback of open-loop Class D amplifiers is their susceptibility to supply noise, quantified by power supply rejection ratio (PSRR) and power supply induced intermodulation distortion (PS-IMD). In this paper, PSRR and PS-IMD of a commonly-used carrier generation method are investigated and compared against other common carrier generation methods. The analyses are verified by means of HSPICE simulations. The analyses and comparisons provide designers useful insight to the design of power critical Class D amplifiers.","PeriodicalId":337009,"journal":{"name":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","volume":"190 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Effect of carrier topologies on PSRR and PS-IMD of open-loop Class D amplifiers for hearing aids\",\"authors\":\"Linfei Guo, T. Ge, J. Chang\",\"doi\":\"10.1109/CASME.2010.5706685\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Open-Loop Pulse Width Modulation (PWM) Class D amplifiers are attractive for power critical applications including hearing aids due to their simple hardware and high power-efficiency. Nevertheless, a drawback of open-loop Class D amplifiers is their susceptibility to supply noise, quantified by power supply rejection ratio (PSRR) and power supply induced intermodulation distortion (PS-IMD). In this paper, PSRR and PS-IMD of a commonly-used carrier generation method are investigated and compared against other common carrier generation methods. The analyses are verified by means of HSPICE simulations. The analyses and comparisons provide designers useful insight to the design of power critical Class D amplifiers.\",\"PeriodicalId\":337009,\"journal\":{\"name\":\"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)\",\"volume\":\"190 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CASME.2010.5706685\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 2nd Circuits and Systems for Medical and Environmental Applications Workshop (CASME)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CASME.2010.5706685","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Effect of carrier topologies on PSRR and PS-IMD of open-loop Class D amplifiers for hearing aids
Open-Loop Pulse Width Modulation (PWM) Class D amplifiers are attractive for power critical applications including hearing aids due to their simple hardware and high power-efficiency. Nevertheless, a drawback of open-loop Class D amplifiers is their susceptibility to supply noise, quantified by power supply rejection ratio (PSRR) and power supply induced intermodulation distortion (PS-IMD). In this paper, PSRR and PS-IMD of a commonly-used carrier generation method are investigated and compared against other common carrier generation methods. The analyses are verified by means of HSPICE simulations. The analyses and comparisons provide designers useful insight to the design of power critical Class D amplifiers.