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
