introduction to the alliance for wireless power (a4wp)
DESCRIPTION
Presented by Reiner Van Der Lee in LTE World Summit 2014TRANSCRIPT
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Introduction to the
Alliance for Wireless Power
(A4WP)
June 2014
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Wireless Charging Trend
100M Wirelessly powered devices by 2015
1
10+ Devices need to be charged for normal operation in the average U.S. household
2
Source: 1IHS 2014, 2ABI Research 2013
100% 50% 0% 75% 25%
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The Vision of Ubiquitous Power
Hu
ma
n C
og
nit
ive
Lo
ad
& S
tre
ss
Energy Management Drivers
Social “Green”
Awareness
Smart Grid Information
Explosion
Device Battery
Charging Demands
Consumers have become device “power managers”
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The Vision of Ubiquitous Power
– Goals
– Minimize energy management cognitive load
– Maximize ease of powering consumer electronics
– Solution: Wireless Power Transfer (WPT)
– WPT source-rich environment
– WPT power-scalable technology for CE products
– WPT user experience, applications and services
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Wireless charging in the home
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wireless charging in the office
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wireless charging in the car
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wireless charging on the go
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Why the market is interesting
Source: IHS, March 2014
0
2
4
6
8
10
2012 2013 2014 2015 2016 2017 2018
Reven
ues (
$B
)
World Market Revenue
Assumptions include
Multi-mode solutions
Major smartphone manufacturer(s) to adopt wireless charging of flagship product
Limited regulatory requirements
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Broad ecosystem for wireless charging
– Mobile phones and tablets are the first and largest opportunity
– Wearable tech is a growth opportunity
0
500
1,000
2012 2013 2014 2015 2016 2017 2018
Wireless Power Receivers By Application (MU)
Mobile Phones Tablets Wearable Technology Others
Source: IHS, March 2014
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Qi Integrated, Qi Ready
Wireless power today– More than 40 phones
Revolution Spectrum Nexus 4 Spectrum 2 Optimus 2 Thunderbolt Incredible 2 Rezound 8X Droid DNA
Lumia 810 Lumia 820 Lumia 822 Lumia 920 Droid Charge Galaxy S III Galaxy Note II Google/LG Nexus 4 Nexus 10 Nexus 7
Top Mobile Brands Offer Wireless Charging:
So…..Why Hasn’t Wireless Charging Really Taken Off?
50% Integrated in the phone
50% Integrated in back cover
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Wireless charging Wish list
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Air Transformer, Tightly Coupled
Inductive Technology
Loosely-coupled LC Resonant Circuits
Resonant Technology
Next generation of wireless charging
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User advantages for Resonant technology
Characteristics
Standard
A4WP Resonant (Rezence)
WPC Inductive (Qi)
PMA Inductive
Operating Frequency 6.78 MHz 200 kHz 300 kHz
Transmitter Power 16 Watt 5 Watt 5 Watt
Receiver Power Range Wearable to laptop Phone Phone
Multi-receiver Support Yes No No
Enables Free Positioning Yes Limited No
Communication BLE
(Duplex)
In-band
(Simplex, Low BW)
In-band
tone only
Maximum Separation 50 mm 5 mm 5 mm
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Can your charger do this?
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Resonant technology will dominate from 2016 Multi-mode Solutions Will Drive Adoption and Interoperability from 2014 to 2017
0%
20%
40%
60%
80%
100%
120%
2012 2013 2014 2015 2016 2017 2018 Tightly Coupled Loosely Coupled
% P
rop
ort
ion
of
To
tal
Un
its
Sh
ipp
ed
Wireless Power Receivers By Range
Source: IHS, March 2014
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Wireless power standards consolidation Specification A4WP PMA WPC
Inductive technology - PMA Qi
Resonant technology Rezence Working Group Working Group
Specification A4WP PMA WPC
Inductive technology PMA Qi
Resonant technology Rezence Resonant Transmitters
A4WP/PMA Liaison Agreement
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A4WP Alliance Purpose, Vision & Mission
– Purpose – Create a wireless power transfer (WPT) ecosystem that delivers
spatial freedom
– Vision – Ubiquitous power based on non-radiative, near-field magnetic
resonance wireless power transfer
– Mission – Global standardization
– Certification and testing
– Regulatory compliance and policy
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– A4WP is an industry standards body formed in 2012
– Rezence brand launched in late 2013
– 100+ member companies, high-impact board of directors:
– Automotive, carriers, consumer devices, components, furniture,
technology, test and certification
– Liaison Relationships: Bluetooth SIG, PMA, CCSA, BWF, TTA
Quick Facts
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100+ MEMBERS
As of June 18, 2014
A4WP Membership
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A4WP Recent News: The Path to Products
– Rezence brand launched
– Certification program and 1st certified products for smartphone
& cell phone use cases (BSS V1.2)
– Achieved BSS V1.3 alpha for tablet & laptop use cases
– Digital Trends Best in Show Finalist at CES ’14
– “Wearables” new work item launched (BSS V1.4)
– A4WP and Power Matters Alliance join forces
– Bluetooth SIG, China, Japan and Korea national standards
groups form liaison relationships with A4WP
– Plugfest #4, 21-25 April, 2014 60+ participants bringing 10+
Charger and 10+ Receiver designs for BSS V1.2 and V1.3
Top Five Finalist
Best in Show at CES
2014
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A4WP BSS Work Plan
2013 2014 [Q3CY14] 2015 [Q1CY15]
Usage
Progression
Home, Business,
Automotive
Public Infrastructure &
Services Enhanced Services
Features Positional Freedom, 1:N, Bluetooth Smart Communications, Scalable Power
Specification(s) BSS* 1.2 [DONE] BSS 1.3 BSS 1.4
1:N PTU Power 10 – 16W 10 – ~50W ~1 – ~50W
PTU Devices (ex) Mats, Furniture, In-
Vehicle Accessories Furniture, PCs, In-Vehicle Consumer Electronics
PRU Power 3.5 – 6.5W 3.5 – 30W ~1 – ~30W
PRU Devices (ex) Smartphones Laptops, Tablets, Peripherals Consumer Electronics
Apps Power Management,
Location Social Media, Gaming
*Baseline System Specification (BSS)
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Additional Information
A4WP website
www.rezence.com
www.a4wp.org
Video Demos
YouTube
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Thank You
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WPT Regulatory Considerations
– Categorization drives several key areas
– ISM (6.78 MHz) attractive
– Global availability (ITU-R)
– Unrestricted emissions (e.g., FCC Part 18)
– Emissions limits
– RF exposure
– Compliance to basic restrictions
– Current density (J)
– Induced electric field (E)
– Specific Absorption Rate (SAR)
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WPT Regulatory Considerations
– Designing for Regulatory compliance
– Use cases
– To define quantitative coupled-coil descriptions (M, R1, R2, ω0)
– Equivalent circuits
– To derive key mathematical relationships for end-to-end circuit (or
at least subsystem-level) behavior, e.g., power transfer efficiency
– Constraining implementation choices in real circuits
– To establish a “design feedback loop” to evaluate implementation
choice on the basis of impact on end-to-end system performance
– Regulatory compliance assessment through experimentally-validated
simulation methods
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WPT Regulatory Considerations
– Potentially applicable Regulations for WPT