{"title":"20MS/s降压/升压电源调制器，用于包络跟踪应用，具有直接数字接口","authors":"Shang-Hsien Yang, Chinder Wey, Ke-Horng Chen, Ying-Hsi Lin, Jing-Jia Chen, Tsung-Yen Tsai, Chao-Cheng Lee","doi":"10.1109/ASSCC.2014.7008863","DOIUrl":null,"url":null,"abstract":"A buck/boost supply modulator (BBSM) is proposed for 4G LTE RF power amplifier (RF-PA) envelope tracking applications. The H-bridges used in non-inverting buck/boost converters are metamorphosed into the current sources and switches of a 4-bit current-steering DAC-like supply modulator. Fast tracking speed is achieved through its inherent open-loop topology, while the direct digital interface provides easy control and integration with digital LTE baseband SoCs. The proposed BBSM is capable of delivering peak power of 2.8W at 20MS/s, with a peak efficiency of 75 %.","PeriodicalId":161031,"journal":{"name":"2014 IEEE Asian Solid-State Circuits Conference (A-SSCC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A 20MS/s buck/boost supply modulator for envelope tracking applications with direct digital interface\",\"authors\":\"Shang-Hsien Yang, Chinder Wey, Ke-Horng Chen, Ying-Hsi Lin, Jing-Jia Chen, Tsung-Yen Tsai, Chao-Cheng Lee\",\"doi\":\"10.1109/ASSCC.2014.7008863\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A buck/boost supply modulator (BBSM) is proposed for 4G LTE RF power amplifier (RF-PA) envelope tracking applications. The H-bridges used in non-inverting buck/boost converters are metamorphosed into the current sources and switches of a 4-bit current-steering DAC-like supply modulator. Fast tracking speed is achieved through its inherent open-loop topology, while the direct digital interface provides easy control and integration with digital LTE baseband SoCs. The proposed BBSM is capable of delivering peak power of 2.8W at 20MS/s, with a peak efficiency of 75 %.\",\"PeriodicalId\":161031,\"journal\":{\"name\":\"2014 IEEE Asian Solid-State Circuits Conference (A-SSCC)\",\"volume\":\"5 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2014 IEEE Asian Solid-State Circuits Conference (A-SSCC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ASSCC.2014.7008863\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 IEEE Asian Solid-State Circuits Conference (A-SSCC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ASSCC.2014.7008863","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A 20MS/s buck/boost supply modulator for envelope tracking applications with direct digital interface
A buck/boost supply modulator (BBSM) is proposed for 4G LTE RF power amplifier (RF-PA) envelope tracking applications. The H-bridges used in non-inverting buck/boost converters are metamorphosed into the current sources and switches of a 4-bit current-steering DAC-like supply modulator. Fast tracking speed is achieved through its inherent open-loop topology, while the direct digital interface provides easy control and integration with digital LTE baseband SoCs. The proposed BBSM is capable of delivering peak power of 2.8W at 20MS/s, with a peak efficiency of 75 %.
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