P9221-R Datasheet

© 2016 Integrated Device Technology, Inc.

2

December 16, 2016

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