A Single-Inductor Switching DC–DC Converter With Five Outputs and Ordered Power-Distributive Control

An integrated five-output single-inductor multiple- output dc-dc converter with ordered power-distributive control (OPDC) in a 0.5 m Bi-CMOS process is presented. The converter has four main positive boost outputs programmable from +5 V to +12 V and one dependent negative output ranged from 12 V to 5 V. A maximum efficiency of 80.8% is achieved at a total output power of 450 mW, with a switching frequency of 700 kHz. The performance of the converter as a commercial product is successfully verified with a new control method and proposed circuits, including a full-waveform inductor-current sensing circuit, a variation-free frequency generator, and an in-rush-current-free soft-start method. With simplicity, flexibility, and reliability, the design enables shorter time-to-market in future extensions with more outputs and different operation requirements.
Publisher
IEEE
Issue Date
2007-12
Keywords

Ordered power-distributive control (OPDC); single-inductor multiple-output (SIMO) converter

Citation

Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International

ISSN
0018-9200
DOI
10.1109/JSSC.2007.908767
URI
http://hdl.handle.net/10203/6502
Appears in Collection
EE-Conference Papers(학술회의논문)
Files in This Item
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