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Single Inductor Multiple-Input Multiple-Output Switching Converter and Method of Use

Summary

Battery-operated portable equipment requires battery power management system for switching between battery and external power source. While prior implementation requires separate power converters and power multiplexers such system, this invention provides a DC-DC converter that allows multiple power sources to be multiplexed through only one inductor.

The invention is a component-efficient battery power management system using a single inductor multiple-input multiple-output (SIMIO) switching converter. In the new system, power regulation, battery charging and power mutiplexing can all be integrated. The system complexity, area and manufacturing cost are therefore significantly reduced.

With SIMIO, the system can perform high efficiency battery charging and power regulation at the same time which cannot be done by prior arts.

This invention is particularly advantageous if applied in electronic appliance, such as, but not limited to, a battery operated portable electronic device using one or multiple rechargeable batteries.

Technology Benefits

1. One inductor is required
2. Smaller area
3. Lower cost
4. Lower system complexity
5. Higher efficiency battery charging and power regulation

Technology Application

- Portable electronic equipment using one or multiple rechargeable battery

Supplementary Information

Patent Number: US7256568B2
Application Number: US2005126875A
Inventor: Lam, Yat Hei | Ki, Wing Hung | Tsui, Chi Ying
Priority Date: 11 May 2004
Priority Number: US7256568B2
Application Date: 11 May 2005
Publication Date: 14 Aug 2007
IPC Current: G05F000110 | G05F000140 | G05F0001577 | H02M000110 | H02M0003158 | H02J000100
US Class: 323222 | 323267
Assignee Applicant: The Hong Kong University of Science & Technology
Title: Single inductor multiple-input multiple-output switching converter and method of use
Usefulness: Single inductor multiple-input multiple-output switching converter and method of use
Summary: E.g. single inductor multiple input multiple output (SI-MIMO) switching converter.
Novelty: Voltage converter e.g. single inductor multiple input multiple output switching converter has switching controller which connects input terminals with output terminals through inductor, at different times

Industry

Electronics

Sub Group

Circuit Design

Application Date

11 May 2005

Application No.

US 11/126875

Patent Information

US 7256568

ID No.

TTC.PA.223S

Country/Region

Hong Kong

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