Novel control technique for single inductor multiple output converters operating in CCM with reduced cross-regulation

Pizzutelli, A.; Ghioni, M.

doi:10.1109/apec.2008.4522923

Cited by 51 publications

(46 citation statements)

References 10 publications

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“…8-13. Measured results show that this design can achieve a CR close to a well designed TMC converter [4] which gives a CR of 0.1mV/mA, and much better than that of the previous CCM SIMO converters [2,3]. The response time is less than 20µs with load current transient between 20mA and 200mA.…”

Section: Measurementmentioning

confidence: 59%

“…For OPDC converters operating in CCM, no isolation of the outputs exists and thus CR is severe. CR of as large as 25mV/mA has been noticed in [2] while [3] reduces the CR to 0.5mV/mA. However, since CCM converters have lots of advantages such as large output power capacity and small output ripple, in this paper, an SIDO buck converter operating in CCM with OPDC scheme is proposed with novel CRS control to suppress the CR.…”

Section: Introductionmentioning

confidence: 98%

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Cross-Regulation-Suppression control scheme for CCM Single-Inductor-Dual-Output buck converter with ordered-power-distributive control

Huang

Mok

2011

2011 IEEE International Symposium of Circuits and Systems (ISCAS)

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A Single-Inductor-Dual-Output (SIDO) buck converter with Cross-Regulation-Suppression (CRS) control scheme is presented. The converter operates in continuousconduction-mode (CCM) and employs ordered-powerdistributive control (OPDC) to distribute the inductor current to the two outputs. The novel CRS control method is used to suppress the cross-regulation (CR) of the SIDO which is an important issue in OPDC CCM converter design. On-chip type-III compensator is incorporated in the SIDO converter to eliminate off-chip components and accelerate system response. The CRS controlled converter is fabricated with AMS 0.35µm CMOS process and operates at 2MHz. Measurement results show that this converter achieves a cross-regulation down to 0.056mV/mA with 180mA load current changes and a response time less than 20µs. The maximum efficiency is 91.8%.

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Section: Measurementmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 98%

Cross-Regulation-Suppression control scheme for CCM Single-Inductor-Dual-Output buck converter with ordered-power-distributive control

Huang

Mok

2011

2011 IEEE International Symposium of Circuits and Systems (ISCAS)

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“…In SIMO DC-DC converter, however, power efficiency and regulation characteristics are worse than those of typical inductive switching converter with single-output. Although the deterioration of regulation characteristic has been partially overcome by various researches and efforts [10][11][12], it is still difficult to improve the power efficiency of the converter because of switching and conduction power losses at multiple output switches in the SIMO DC-DC. In this paper, a SIMO DC-DC converter with gate charge sharing method, in which gate charges of output switches are shared, is proposed to reduce the switching power loss and improve the power efficiency for mobile applications.…”

Section: Introductionmentioning

confidence: 99%

“…In [4][5][6][7][8][9][10][11][12], the single-inductor multiple-outputs (SIMO) DC-DC converter was introduced to generate the required supply voltages without increasing the number of external inductors. This SIMO DC-DC converter uses only one inductor to generate multiple outputs.…”

Section: Introductionmentioning

confidence: 99%

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A Highly Power-Efficient Single-Inductor Multiple-Outputs (SIMO) DC-DC Converter with Gate Charge Sharing Method

Nam

Seo

Ahn

et al. 2014

JSTS:Journal of Semiconductor Technology and Science

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Abstract-This paper proposes a highly powerefficient single-inductor multiple-outputs (SIMO) DC-DC converter with a gate charge sharing method in which gate charges of output switches are shared to improve the power efficiency and to reduce the switching power loss. The proposed converter was fabricated by using a 0.18 µm CMOS process technology with high voltage devices of 5 V. The input voltage range of the converter is from 2.8 V to 4.2 V, which is based on a single cell lithium-ion battery, and the output voltages are 1.0 V, 1.2 V, 1.8 V, 2.5 V, and 3.3 V. Using the proposed gate charge sharing method, the maximum power efficiency is measured to be 87.2% at the total output current of 450 mA. The measured power efficiency improved by 2.1% compared with that of the SIMO DC-DC converter without the proposed gate charge sharing method.Index Terms-DC-DC converter, single inductor multiple outputs (SIMO), power efficiency, charge sharing, switching power loss

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Design and implementation of a digitally controlled single‐inductor dual‐output (SIDO) buck converter

Tsai

Yang

Leng³

2012

Circuit Theory & Apps

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This paper describes design and implementation of a digitally controlled single-inductor dual-output (SIDO) buck converter operating in discontinuous conduction mode. This converter adopts time-multiplexing control in providing two independent output voltages using only an inductor. The design issues of the digital controller are discussed, including static and dynamic characteristics. Implementation of the controller, a modified hybrid digital pulse width modulator and a single look-up table are developed. The digital controller was implemented on a field-programmable gate array-based control board. Experimental results demonstrating system validity are presented for a SIDO buck converter with nominal 3.6 V input voltage, and the outputs are regulated at 1.8 and 2.2 V.

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Novel control technique for single inductor multiple output converters operating in CCM with reduced cross-regulation

Cited by 51 publications

References 10 publications

Cross-Regulation-Suppression control scheme for CCM Single-Inductor-Dual-Output buck converter with ordered-power-distributive control

Cross-Regulation-Suppression control scheme for CCM Single-Inductor-Dual-Output buck converter with ordered-power-distributive control

A Highly Power-Efficient Single-Inductor Multiple-Outputs (SIMO) DC-DC Converter with Gate Charge Sharing Method

Design and implementation of a digitally controlled single‐inductor dual‐output (SIDO) buck converter

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