multi mode receiver design - wirelesspowerconsortium.com · june, 2015 multi mode receiver design...
TRANSCRIPT
![Page 1: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/1.jpg)
Mark Estabrook
Wireless Power Solutions | MediaTekJune, 2015
Multi Mode ReceiverDesign
To Accelerate Wireless Power Market Adoption
![Page 2: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/2.jpg)
Wireless-Power Ecosystem Diversity
Copyright © MediaTek Inc. All rights reserved. 2
Several WP ecosystems coexist now, fighting for market share , confusing customers with “I am the best..” statements
Today’s Wireless Power Ecosystems are Self Contained and Divided Competing Ecosystems Create a Road Block to WW Wireless Power Adoption Qi/PMA Dual mode products are just starting to emerge
![Page 3: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/3.jpg)
But Each Standard Has BenefitsFeature/Benefit Qi PMA A4WP Notes
Market maturity, lowest cost today
++ ++ Qi & PMA have been in the market for years, Qi has the highest volume
Coil Area (e.g. 5W Phones)
X X 2-3X A4WP coil size will scale with the power requirement
Power control IB IB BLE IB = In Band, potentially lower cost
Efficiency ++ ++ +
Freedom of placement + + ++ Tolerance for low coupling
Interoperability of different size coils / power levels
+ + ++ Tolerance for low coupling which accommodates mismatch in Rx/Tx sizes more easily
Charging continuity in presence metals
+ + ++ Sensitivity to metals causes FOD schemes to interrupt or prevent charging
Multiple device support No No Yes With a single Tx coil
Distance Charging + + ++ Low = ~ 5mm, High = ~35mm
Based on existing standards Qi 1.1.2, PMA 1.0, A4WP 1.2
![Page 4: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/4.jpg)
Can We Bring Wireless Charging Under One Umbrella of Solutions?
![Page 5: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/5.jpg)
What Makes These Standards Different?
Feature
Comms Protocols
Power Transfer • Induction vs. Resonance
Operating Frequency
Difference
This is just a language. The essential algorithm for power transfer is similar.
All systems are resonant, the difference is whether we choose to operate on-resonance (Rezence) or slightly off-resonance (Qi)
Qi/PMA are of similar frequencies, and A4WP is a very different frequency
2014-11-20Copyright © MediaTek Inc. All rights reserved. 5
![Page 6: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/6.jpg)
We Could Define The Ecosystem Based on Frequency
Copyright © MediaTek Inc. All rights reserved. 6
Highly Resonant
HFTX
RX
Inductive LF
TX
RX
Operating Frequency Fence
100-300kHz
6.78 MHz
![Page 7: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/7.jpg)
We Can Use Frequency To Our Advantage
7
▪ Low cost approach w/single:• Coil• Matching network • Power path
▪ Matching circuit delivers power at the desired frequency
LF MI Mode HF MR Mode
HF
LF
ZC>1000 Ω
ZL<0.4 Ω ZL>600 Ω
CS CS
ZC<0.4 ΩRx Case…
![Page 8: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/8.jpg)
MT3188 Multi Standard Module
▪ Device, MT3188 • In Mass Production
▪ Certification• WPC 1.1.2 Mar, 2014
• PMA 1.0 Dec, 2014
• A4WP 1.2 Feb, 2015
▪ Module Supplier• Various; contact MediaTek
55mm
73 mm
![Page 9: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/9.jpg)
Considerations for Rx or Tx for Multimode Implementation
9
▪ The A4WP standard is 1:many charging (Tx/Rx)
▪ The Qi standard has Tx options for multiple coils for 1:1 charging (Rx/Tx)• Rx: Simple coil design
• Tx: More complicated coil design
Rx Tx - 1:2
A4WP coil
Qi/PMA coils
![Page 10: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/10.jpg)
To Date Companies are Moving Towards Rx Implentations
10
▪ Companies have announced Rx solutions first including…
• MediaTek MT3188
• Broadcom BCM59350
• IDT P9700
▪ The infrastructure market is asking for multimode transmitters; none are announced
![Page 11: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/11.jpg)
Summary
Copyright © MediaTek Inc. All rights reserved. 11
▪ The diversity of Wireless-Power Ecosystems does not promote global adoption
▪ Technology can support Multi-Frequency solutions for both transmitters and receivers
▪ Multi-Frequency, Multi-Standard Products are already Emerging on the Market. Let’s welcome them.
▪ Multi-Standard Wireless Power Products can be a contemporary approach to promote World Wide acceptance of Wireless Charging
![Page 12: Multi Mode Receiver Design - wirelesspowerconsortium.com · June, 2015 Multi Mode Receiver Design To Accelerate Wireless Power Market Adoption. Wireless-Power Ecosystem Diversity](https://reader035.vdocuments.us/reader035/viewer/2022071103/5fdc844c68009623925df69b/html5/thumbnails/12.jpg)
12