Integrated on-chip 0.35m BiCMOS current-mode DC-DC buck converter

Chan Soo Lee; Nam Soo Kim; Munkhsuld Gendensuren; Jae Ho Choi; Joong Ho Choi

doi:10.1080/00207217.2012.680790

Integrated on-chip 0.35m BiCMOS current-mode DC-DC buck converter

Chan Soo Lee, Nam Soo Kim, Munkhsuld Gendensuren, Jae Ho Choi, Joong Ho Choi

School of Electrical and Computer Engineering

Chungbuk National University

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

A current-mode DC-DC buck converter with a fully integrated power module is presented in this article. The converter is implemented using BiCMOS technology in amplifier and power MOSFET in a current sensor. The current sensor is realised by the power lateral double-diffused MOSFET with the aspect ratio much larger than that of a matched p-MOSFET. In addition, BiCMOS technology is applied in the error amplifier for an accurate current sensing and a fast transient response. The DC-DC converter is fabricated with 0.35m BiCMOS process. Experimental results show that the fully integrated converter operates at 1.3MHz switching frequency with a supply voltage of 5V. The output DC voltage is obtained as expected and the output ripple is controlled to be within 2% with a 30H off-chip inductor and 100F off-chip capacitor.

Original language	English
Pages (from-to)	1623-1634
Number of pages	12
Journal	International Journal of Electronics
Volume	99
Issue number	12
DOIs	https://doi.org/10.1080/00207217.2012.680790
State	Published - 1 Dec 2012

Keywords

BiCMOS
LDMOSFET
buck converter
current mode
fully integrated
output ripple

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10.1080/00207217.2012.680790

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abstract = "A current-mode DC-DC buck converter with a fully integrated power module is presented in this article. The converter is implemented using BiCMOS technology in amplifier and power MOSFET in a current sensor. The current sensor is realised by the power lateral double-diffused MOSFET with the aspect ratio much larger than that of a matched p-MOSFET. In addition, BiCMOS technology is applied in the error amplifier for an accurate current sensing and a fast transient response. The DC-DC converter is fabricated with 0.35m BiCMOS process. Experimental results show that the fully integrated converter operates at 1.3MHz switching frequency with a supply voltage of 5V. The output DC voltage is obtained as expected and the output ripple is controlled to be within 2% with a 30H off-chip inductor and 100F off-chip capacitor.",

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AU - Kim, Nam Soo

AU - Gendensuren, Munkhsuld

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AU - Choi, Joong Ho

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AB - A current-mode DC-DC buck converter with a fully integrated power module is presented in this article. The converter is implemented using BiCMOS technology in amplifier and power MOSFET in a current sensor. The current sensor is realised by the power lateral double-diffused MOSFET with the aspect ratio much larger than that of a matched p-MOSFET. In addition, BiCMOS technology is applied in the error amplifier for an accurate current sensing and a fast transient response. The DC-DC converter is fabricated with 0.35m BiCMOS process. Experimental results show that the fully integrated converter operates at 1.3MHz switching frequency with a supply voltage of 5V. The output DC voltage is obtained as expected and the output ripple is controlled to be within 2% with a 30H off-chip inductor and 100F off-chip capacitor.

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Integrated on-chip 0.35m BiCMOS current-mode DC-DC buck converter

Abstract

Keywords

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