13. Package Drawings ......................................................................................................................................................................................34
14. Recommended Land Pattern ......................................................................................................................................................................35
15. Special Notes: WLCSP-52 (AHG52) Package Assembly ...........................................................................................................................36
16. Marking Diagram ........................................................................................................................................................................................36
17. Ordering Information ...................................................................................................................................................................................36
18. Revision History ..........................................................................................................................................................................................37
List of Figures
Figure 1. Pin Assignments ..................................................................................................................................................................................5
Figure 2. Efficiency vs. Output Load: V
OUT
= 12V .............................................................................................................................................12
Figure 3. Load Reg. vs. Output Load: V
OUT
= 12V ............................................................................................................................................12
Figure 4. Efficiency vs. Output Load: V
OUT
= 9V ...............................................................................................................................................12
Figure 5. Load Reg. vs. Output Load: V
OUT
= 9V ..............................................................................................................................................12
Figure 6. Efficiency vs. Output Load: V
OUT
= 5V ...............................................................................................................................................12
Figure 7. Load Reg. vs. Output Load: V
OUT
= 5V ..............................................................................................................................................12
Figure 8. Rectifier Voltage vs. Load: V
OUT
= 12V ..............................................................................................................................................13
Figure 9. Rectifier Voltage vs. Load: V
OUT
= 9V ................................................................................................................................................13
Figure 10. Rectifier Voltage vs. Load: V
OUT
= 5V ................................................................................................................................................13
Figure 11. Current Limit vs. V
ILIM
........................................................................................................................................................................13
Figure 12. X and Y Misalignment ........................................................................................................................................................................13
Figure 13. Max. Power vs. Misalignment: V
OUT
=12V ..........................................................................................................................................13
Figure 14. Enable Startup: V
OUT
= 12V; I
OUT
= 1.2A ............................................................................................................................................14
Figure 15. Transient Resp: V
OUT
= 12V; I
OUT
= 0 to 1.2A ....................................................................................................................................14
Figure 16. Transient Resp: V
OUT
= 12V; I
OUT
= 1.3A to 0 ....................................................................................................................................14
Figure 17. Functional Block Diagram ..................................................................................................................................................................15
Figure 18. Example of Differential Bi-phase Decoding for FSK ..........................................................................................................................21
Figure 19. Example of Asynchronous Serial Byte Format for FSK .....................................................................................................................21
Figure 20. Bit Encoding Scheme ........................................................................................................................................................................22
Figure 21. Byte Encoding Scheme .....................................................................................................................................................................22
Figure 22. Communication Packet Structure ......................................................................................................................................................22
Figure 23. WPC Power Transfer Phases Flowchart ...........................................................................................................................................23
Figure 24. Typical Application Schematic – P9221-R Evaluation Board Revision 2.2 ........................................................................................31
Figure 25. Package Outline Drawing (AHG52) ...................................................................................................................................................34
Figure 26. 52-WLCSP (AHG52) Land Pattern ....................................................................................................................................................35
