P9221-R Datasheet

© 2017 Integrated Device Technology, Inc.

2

April 4, 2017

Contents

1.

Pin Assignments...........................................................................................................................................................................................5

2.

Pin Descriptions............................................................................................................................................................................................5

3.

Absolute Maximum Ratings..........................................................................................................................................................................8

4.

Thermal Characteristics................................................................................................................................................................................9

5.

Electrical Characteristics ..............................................................................................................................................................................9

6.

Typical Performance Characteristics..........................................................................................................................................................12

7.

Function Block Diagram .............................................................................................................................................................................15

8.

Theory of Operation....................................................................................................................................................................................16

8.1

LDO – Low Dropout Regulators.......................................................................................................................................................16

8.2

Setting the Output Voltage – VOSET...............................................................................................................................................16

8.3

SINK Pin ..........................................................................................................................................................................................17

8.4

Rectifier Voltage – VRECT...............................................................................................................................................................17

8.5

Over-Current Limit – ILIM.................................................................................................................................................................17

8.6

Interrupt Function – INT ...................................................................................................................................................................17

8.7

Enable Pin – EN...............................................................................................................................................................................17

8.8

Thermal Protection...........................................................................................................................................................................17

8.9

External Temperature Sensing – TS................................................................................................................................................17

8.10 Alignment Guide – ALIGNX and ALIGNY ........................................................................................................................................18

8.11 Received Power Packet Offset and Gain Calibration – RPPO and RPPG ......................................................................................18

8.12 Advanced Foreign Object Detection (FOD) .....................................................................................................................................18

9.

Communication Interface............................................................................................................................................................................20

9.1

Modulation/Communication..............................................................................................................................................................20

9.2

Bit Encoding Scheme for ASK .........................................................................................................................................................21

9.3

Byte Encoding for ASK.....................................................................................................................................................................21

9.4

Packet Structure ..............................................................................................................................................................................21

10. WPC Mode Characteristics ........................................................................................................................................................................22

10.1 Selection Phase or Startup ..............................................................................................................................................................22

10.2 Ping Phase (Digital Ping) .................................................................................................................................................................22

10.3 Identification and Configuration Phase ............................................................................................................................................23

10.4 Negotiation Phase............................................................................................................................................................................23

10.5 Calibration Phase.............................................................................................................................................................................23

10.6 Power Transfer Phase .....................................................................................................................................................................23

11. Functional Registers...................................................................................................................................................................................24

12. Application Information ...............................................................................................................................................................................29

12.1 Power Dissipation and Thermal Requirements................................................................................................................................29

12.2 Recommended Coils........................................................................................................................................................................29

12.3 Typical Application Schematic .........................................................................................................................................................30

12.4 Bill of Materials (BOM) .....................................................................................................................................................................31