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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials 제14권 제5호
- 발행연도
- 2013.1
- 수록면
- 235 - 241 (7page)
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초록· 키워드
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A low power CMOS control circuit is applied in an integrated DC-DC buck converter. The integrated converter is composed of a feedback control circuit and power block with 0.35 μm CMOS process. A current-sensing circuit is integrated with the sense-FET method in the control circuit. In the current-sensing circuit, a current-mirror is used for a voltage follower in order to reduce power consumption with a smaller chip-size. The N-channel MOS acts as a switching device in the current-sensing circuit where the sensing FET is in parallel with the power MOSFET. The amplifier and comparator are designed to obtain a high gain and a fast transient time. The converter offers wellcontrolled output and accurately sensed inductor current. Simulation work shows that the current-sensing circuit is operated with an accuracy of higher than 90% and the transient time of the error amplifier is controlled within 75μsec. The sensing current is in the range of a few hundred μA at a frequency of 0.6~2 MHz and an input voltage of 3~5 V.
The output voltage is obtained as expected with the ripple ratio within 1%.
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참고문헌 (11)
참고문헌 신청
B. J. Patella / 2002 / High-frequency digital PWM controller IC for DC-DC converters / IEEE Trans. Power Electronics 18 (1) : 438 ~ 446
C. F. Lee / 2003 / A Monolithic Current-Mode CMOS DCDC Converter With On-Chip Current-Sensing Technique / IEEE J. Solid-State Circuits 39 (1) : 3 ~ 14
C. Restrepo / 2012 / Current-mode control of a coupled-inductor buck-boost DCDC switching converter / IEEE Trans. Power Electron 27 (5) : 2536 ~ 2549
C. S. Lee / 2012 / Integrated BiCMOS control circuits for high-performance DC-DC boost converter / IEEE Trans. Power Electronics 28 (5) : 2596 ~ 2603
C. S. Lee / 2012 / Integrated on-chip 0.35 μm BiCMOS current-mode DC-DC buck converter / Int. J. of Electronics 99 (12) : 1623 ~ 1634
C. F. Lee / 2003 / A Monolithic Current-Mode CMOS DCDC Converter With On-Chip Current-Sensing Technique / IEEE J. Solid-State Circuits 39 (1) : 3 ~ 14
C. Restrepo / 2012 / Current-mode control of a coupled-inductor buck-boost DCDC switching converter / IEEE Trans. Power Electron 27 (5) : 2536 ~ 2549
C. S. Lee / 2012 / Integrated BiCMOS control circuits for high-performance DC-DC boost converter / IEEE Trans. Power Electronics 28 (5) : 2596 ~ 2603
C. S. Lee / 2012 / Integrated on-chip 0.35 μm BiCMOS current-mode DC-DC buck converter / Int. J. of Electronics 99 (12) : 1623 ~ 1634
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