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System Description
Wireless Power Transfer
Volume I: Low Power
Part 1: Interface Definition
Version 1.0
July 2010
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System Description
Wireless Power Transfer
Version 1.0
© Wireless Power Consortium, July 2010
System Description
Wireless Power Transfer
Volume I: Low Power
Part 1: Interface Definition
Version 1.0
July 2010
![](https://csdnimg.cn/release/download_crawler_static/10760611/bg4.jpg)
System Description
Wireless Power Transfer
Version 1.0
© Wireless Power Consortium, July 2010
COPYRIGHT
This System Description Wireless Power Transfer is published by the Wireless Power Consortium, and has
been prepared by the Wireless Power Consortium in close co-operation with ConvenientPower Ltd.,
Fulton Innovation LLC, National Semiconductor Corporation, Nokia Corporation, Olympus Imaging
Corporation, Research In Motion, Limited, Royal Philips Electronics, Sanyo Electric Co. Ltd., Shenzhen Sang
Fei Consumer Communications Co. Ltd., and Texas Instruments Inc.. All rights are reserved. Reproduction
in whole or in part is prohibited without express and prior written permission of the Wireless Power
Consortium.
DISCLAIMER
The information contained herein is believed to be accurate as of the date of publication. However, neither
the Wireless Power Consortium, nor ConvenientPower Ltd., nor Fulton Innovation LLC, nor National
Semiconductor Corporation, nor Nokia Corporation, nor Olympus Imaging Corporation, nor Research In
Motion Limited, nor Royal Philips Electronics, nor Sanyo Electric Co. Ltd., nor Shenzhen Sang Fei
Consumer Communications Co. Ltd., nor Texas Instruments Inc. will be liable for any damages, including
indirect or consequential, from use of this System Description Wireless Power Transfer or reliance on the
accuracy of this document.
CLASSIFICATION
The information contained in this document is marked as confidential.
NOTICE
For any further explanation of the contents of this document, or in case of any perceived inconsistency or
ambiguity of interpretation, or for any information regarding the associated patent license program,
please contact: info@wirelesspowerconsortium.com.
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System Description
Wireless Power Transfer
Version 1.0 Table of Contents
© Wireless Power Consortium, July 2010 i
Table of Contents
1 General ................................................................................................................... 1
1.1 Scope ............................................................................................................................................................................................. 1
1.2 Main features ............................................................................................................................................................................. 1
1.3 Conformance and references ............................................................................................................................................. 1
1.4 Definitions .................................................................................................................................................................................. 2
1.5 Acronyms .................................................................................................................................................................................... 3
1.6 Symbols ........................................................................................................................................................................................ 3
1.7 Conventions ............................................................................................................................................................................... 4
1.7.1 Cross references ............................................................................................................................................................ 4
1.7.2 Informative text ............................................................................................................................................................. 4
1.7.3 Terms in capitals ........................................................................................................................................................... 4
1.7.4 Notation of numbers .................................................................................................................................................... 4
1.7.5 Units of physical quantities ...................................................................................................................................... 4
1.7.6 Bit ordering in a byte ................................................................................................................................................... 4
1.7.7 Byte numbering ............................................................................................................................................................. 5
1.7.8 Multiple-bit Fields......................................................................................................................................................... 5
1.8 Operators .................................................................................................................................................................................... 5
1.8.1 Exclusive-OR ................................................................................................................................................................... 5
1.8.2 Concatenation ................................................................................................................................................................. 5
2 System Overview (Informative) .................................................................... 7
3 Basic Power Transmitter Designs ............................................................. 11
3.1 Introduction ............................................................................................................................................................................ 11
3.2 Power Transmitter designs that are based on a single Primary Coil ............................................................ 11
3.2.1 Power Transmitter design A1 .............................................................................................................................. 11
3.2.2 Power Transmitter design A2 .............................................................................................................................. 16
3.3 Power Transmitter designs that are based on an array of Primary Coils ................................................... 20
3.3.1 Power Transmitter design B1 .............................................................................................................................. 20
3.3.2 Power Transmitter design B2 .............................................................................................................................. 26
4 Power Receiver Design Requirements ..................................................... 29
4.1 Introduction ............................................................................................................................................................................ 29
4.2 Power Receiver design requirements ......................................................................................................................... 30
4.2.1 Mechanical requirements ....................................................................................................................................... 30
4.2.2 Electrical requirements ........................................................................................................................................... 31
5 System Control ................................................................................................. 35
5.1 Introduction ............................................................................................................................................................................ 35
5.2 Power Transmitter perspective ..................................................................................................................................... 38
5.2.1 Ping phase ..................................................................................................................................................................... 38
5.2.2 Identification & configuration phase ................................................................................................................. 39
5.2.3 Power transfer phase ............................................................................................................................................... 42
5.3 Power Receiver perspective ............................................................................................................................................ 46
5.3.1 Selection phase............................................................................................................................................................ 46
5.3.2 Ping phase ..................................................................................................................................................................... 47