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Wireless Power – Ready for Prime Time Jeff Gao – Senior FAE Tech Shanghai 16 th March, 2016 © 2016, IDT

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Wireless Power – Ready for Prime TimeJeff Gao – Senior FAE

Tech Shanghai

16th March, 2016

© 2016, IDT

Wireless Power – Ready For Prime Time

Abstract: For many, 2015 marked the ‘tipping point’ for wireless power with major announcements from several key smartphone and infrastructure providers. This paper explores the reasons behind the adoption of wireless power, after more than one hundred years in the wilderness, reviews some of the wireless power technology trends and standards and looks to the next phase of enabling mass market adoption.

Content: •Wireless Power Introduction •Market Trends •‘Crossing the Chasm’ •Wireless Power for the Mass Market

© 2016, IDT

• An alternating current in the transmitter coil generates a magnetic field which induces a voltage in the receiver coil.

• This voltage can be used to power a mobile device or charge a battery

Wireless Power Introduction

© 2016, IDT

• Best energy transfer when the coils are similar size and tightly coupled with small separation

Reference: Wireless Power Consortium

Transmitter (Tx)• Power Conversion Unit:

DC-to-AC Conversion• Adapts Power Transfer

– To the need of the receiver– To a required operating point

• Receives Messages– Via communication Packets– By de-modulation of the reflected

load

Receiver (Rx)• Power Receive Unit:

AC-to-DC Conversion • Controls Received Power

– To the need of the mobile device– To the desired operating point

• Sends Messages– Via communication packets– By load modulation on the power signal

WPC Wireless Power System Transmitter Receiver

© 2016, IDT

MI vs. MR Comparison

• Inductive solutions are more efficient when displacement is minimal• Standardization and development efforts occurring around both technologies

Magnetic Technologies Induction Resonance

Magnetic Field Shielded Open

Frequency Range 100-205kHz Fixed 6.78MHz

Coupling <5mm Inches

Tx : Rx 1:1 Charge 1:Multi-Charge

Efficiency 70-75% TBD

Power Transfer 15W Today 3-10W Today

There are advantages and disadvantages to each…

Close Coupling Spatial Freedom

In Mass Production Today

© 2016, IDT

Wireless Power Standards

• WPC Qi (MI) gaining greater traction• >50MU shipped • Large Smartphone Wins

• A4WP (MR): • Multi-device charging and spatial freedom • Larger size, lower efficiency, increased cost? EMI?

• PMA(MI) and A4WP(MR) agreement to merge

© 2016, IDT

Wireless Power Market Trends

• 2015 seen as industry Tipping Point with new products from Samsung, Apple and IKEA

• Cellphone drives the infrastructure• MI solutions will dominate next 2-3

years, at least• Wireless Power Consortium -

Release 1.2 with Extended Power Profile (EPP)

• A4WP and PMA officially merged in June 2015 to form Airfuel Alliance

IHS Wireless Power Report 2015

© 2016, IDT

TM

Wireless Power:Crossing the Chasm Mass Market

Adoption

Value / Cost EfficiencySize StandardsEasy To Use

APPLICATION ISSUES SOLVED●Convenience - Better user experience●Eliminates contact corrosion●Allows for waterproofing / dustproofing●Eliminates connector reliability issues●Alleviates form-factor constraints

© 2016, IDT

Reaching the Mass Market

• ‘Ready-to-go’ kit in compact form factor• Easy import to customer design• Extensive support collateral

© 2016, IDT

Ease of Use – Development Kits

Turnkey 5 W Wireless Power Transmitter and Receiver Solution

• Fast prototyping

• Simplified designintegration

• Proven, Qi-compliantsolution

© 2016, IDT

Ease of Use – Development Kits

Turnkey 5 W Wireless Power Transmitter and Receiver Solution

• Fast prototyping

• Simplified designintegration

• Proven, Qi-compliantsolution

© 2016, IDT

Turnkey 5 W Wireless Power Transmitter and Receiver Solution

• Fast prototyping

• Simplified designintegration

• Proven, Qi-compliantsolution

By 8:05 it wasconverted inand sealed

Kits arrived5:00 pm

© 2016, IDT

演示者
演示文稿备注
Delivered to the customer the next day

Reference Kit for the Mass MarketEasy to design-in and highly-accessible 5 Watt Qi-compliant wireless power solution (Tx & Rx).

•Fast prototyping- Plug-and-play functionality- Compact form factor

•Seamless design integration- Extensive documentation- Layout import files- FOD tuning guide

The only wireless power solution with comprehensive design-in collateral and a fully-optimized reference layout that can be easily ported to any board.

Availability Available NOW

URL: www.idt.com/go/WPkits

P9038-R-EVK P9025AC-R-EVK

+DatasheetsBoard user guidesSchematicsLayout import filesGerber filesBOM and direct-purchase linksBoard start-up / how-to videosLayout import videoLayout guide app note

FOD tuning guide app noteFOD tuning calculator (Excel)FOD tuning guide how-to videoRef solution marketing videoRef solution product briefDevice (IC) marketing videos

Kits available at distiEntire BOM available at disti

“The Product”

13

68mm (total)

34mm

84mm (total)

54m

m

17mm

29mm

© 2016, IDT

P9038-R-EVK Features & Benefits

14

Features Benefits

Integrated power stage Low BOM cost, small PCB area, low mfg. costs

Proprietary slew rate control Low EMI, up to -10 dB below CISPR specification

2-layer PCB reference layout Low cost, easily ported to system board

High efficiency Low thermal dissipation

Input in-rush control Prevents surges with inexpensive USB/standard adaptors

Fully-functional reference board Fast prototyping

Extensive support collateral Eases design-in effort for faster time-to-market

EEPROM

P9038

USBFET

Micro USB

D1D3

RESET

IO6

IO5

IO4

IO3

IO0

IO2

/EN

GND1 WP

SCL

SDA

LDO5V

GND

VIN

Score line for coil separation

Micro-USB input

Easy-access I/O connection points

LED status indicators

Easy-access power input

(optional)

Non-circuit thermal dissipation area

Non-circuit thermal dissipation area

High-efficiency coil w/ spacer

© 2016, IDT

P9025AC-R-EVK Features & Benefits

15

Features Benefits

Single-chip solution Low BOM cost, small PCB area, low mfg. costs

Programmable FOD Provides flexibility for various applications

Qi-compatible (WPC 1.1.2) Enables widespread interoperability

Optimized PCB reference layout Low cost, easily ported to system board

Fully-functional reference board Plug-and-play prototyping

Extensive support collateral Eases design-in effort for faster time-to-market

P9025AC

Easy-access I/O connection points

LED power indicator

Non-circuit thermal dissipation area

High-efficiency coil, face-down (uses PCB as spacer)

GND1 VRECT INT

STAT

OUT

GND

CHG_END

/EN

TEOPSDAI2CRAILSCL

Score line for coil separation

Easy-access power output

Non-circuit thermal dissipation area

© 2016, IDT

Drop-in Layout Module

16

• Layout import file facilitates “drop-in” to system board – no tweaking necessary• All inputs and outputs have been placed around edges for easy integration• Special layout needs/issues will be referred to a third-party support team

Other Circuitry

Drop-in layout

Customer’s System Board

IDT Tx Reference Board

© 2016, IDT

Reported Power (Measured by Rx)

Foreign Object Detection (FOD) Primer

Power Delivered (Measured by Tx)

I f Delivered - Reported > 350mW, then an FOD event has occurred

© 2016, IDT

Foreign Object Detection Setting

• Changes in Received-Transmit Power caused by ‘ambient’ conditions can be tuned out

• P9025AC receiver has flexible FOD trims implement

© 2016, IDT

Step-by-step FOD Tuning Guide• Boards are factory tuned for Qi compliance, and can be used AS IS• FOD tuning guide provides instruction and Excel tool for making

adjustments on the bench with resistors• Custom/precision profiles to be supported by third-party

User inputs basic voltage and current measurements

Spreadsheet calculates best FOD bank selection and offset resistor values

19 © 2016, IDT

P9038-RQi Wireless Power Tx with Integrated Inverter

Features:VIN Range: 4.5 – 6.9VSupports up to 8W (RX) power transfer – 1.6AIntegrated Power Stage

Minimizes real estate & BOM cost Very low RDS(ON) offering high efficiency

Proprietary slew rate control Eliminates the need for EMI filter

Input Source Voltage Flexibility USB or AC Adaptor

Programmable input in-rush control Supports both USB and AC Adaptor Prevents surges with low cost adaptors

Integrated current sense & FOD amplifierInput Over-Voltage ProtectionWPC-1.1 compliantProprietary backchannel communicationOver-current protectionAvailable in VFQFN- 7m X 7m 56 pin-40 to +85°C temperature range

IDTP9038

LCTX

IN

SCL

SDA

REG_IN

EN

RESET

LDO2P5V_IN

RESETSCL

SDA

LDO5V

VFOD_SNS

LDO2P5V

GPIO6

CLDO5V

LDO5V

COUT_T1

CLDO2P5V

GPIO0GPIO1GPIO2GPIO3GPIO4GPIO5GPIO6

REFGND

GPIO5GPIO4GPIO3GPIO2GPIO1GPIO0

BST1CBST1

BST2

SW1

SW2

CBST2

GATE

VBUS_SNSADAPTOR

ISNSP_IN

ISNSN_IN

ISNS_V

INV5V_IN

CHPF

ISNS

HPF

ISNS_V

OVP_SELPGND

EN

Status Production release

Availability Samples and EVK now

Production Now

© 2016, IDT

Features:Fully integrated single chip wireless power receiver6W output PowerIntegrated tracking LDOOutput Voltage up to 5.5V77% Peak System Level Efficiency WPC-1.1.2 ComplianceIntegrated synchronous full bridge rectifierPower good status pinProgrammable current limit

Lower power settingsActive low enable functionI2C interface – read back

Die temperature, VREC voltage, resonance frequency,Available in WLCSP 3X3mm – 36 & QFN5X5-32 packages

Safety Features: Foreign Object Detection [FOD] Under voltage lockout – UVLO Over temperature/Current/ Voltage protection

P9025AC-RQi Wireless Power Rx with LDO Output

P9025AC

AC1

VRECTCRECT

STATR1

AGND

AC2

SCLSDA

SCLSDA

CS

CD

EN

OUT

COUT

5V OUTPUT

Chip Enable

ACM1

ACM2

CMOD1

CMOD2

CCLAMP2

CCLAMP1

CBST1

CBST2

CLAMP2

BST2

BST1

CLAMP1

PGND

ILIMRlim

TEOP

Charge Complete

INT

LRX

FOD1RFOD1

C1

VDD

FOD2RFOD2

Interupt

Temperature Control

CHG_END/CS100

TQFN onlySNS

Status Production release

Availability Samples and EVK now

Production Now

© 2016, IDT

Key Applications and Customer Needs

KEY APPLICATIONS●PC peripherals●Small appliances●Rugged electronic gear●Furniture

APPLICATION ISSUES SOLVED●Eliminates contact corrosion●Allows for waterproofing / dust-proofing●Eliminates connector reliability issues●Alleviates form-factor constraints●Better user experience

22 © 2016, IDT

Wireless Power – Ready For Primetime

• 2015 tipping point for wireless power

• Infrastructure driven by cellphone manufacturers

• Wireless Power ready to ‘Cross the Chasm’

• Enable small to medium mass market companies with ‘Ready-to-Go’ EVK accompanied by collateral

23 © 2016, IDT

Thank You!

Questions…

© 2016, IDT