ST STEVAL-WLC99RX Manuals

Manuals and User Guides for ST STEVAL-WLC99RX. We have 1 ST STEVAL-WLC99RX manual available for free PDF download: User Manual

ST STEVAL-WLC99RX User Manual (92 pages)

wireless power receiver evaluation board

Brand: ST | Category: Motherboard | Size: 16 MB

Figure 1. STEVAL-WLC99RX Evaluation Board
1
Get Started
2
Reference Design Specifications
3
Table 1. Target Design Specification
3
Overview of the Board
4
Figure 2. Main Board Elements
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Test Points
5
Table 2. Header and Test Point Description
5
Figure 3. Headers and Test Points
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Basic Operating Modes
6
Functional Check
6
Figure 4. STEVAL-WLC99RX (Left Board) Placed on Transmitter Coil of STEVAL-WBC2TX70 (Right Board)
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Graphical User Interface (GUI)
7
Connecting STWLC99 to PC GUI
7
Figure 5. PC GUI Main Screen
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Patch and Configuration Files
8
Configuration File Generation
8
Figure 6. GUI Device Selection and Connection
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Figure 7. Save Rx Button to Generate Config File
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Figure 8. Configuration ID Field for Version Control
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Header File
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Figure 9. Location to Save the File
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Header File Generation
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Figure 10. Header File Generator Device Selection
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Figure 11. Memh File Selection and Patch Version Filling
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Figure 12. Confirmation of Patch Version
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Figure 13. Location to Save Header File
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Programming the Device
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Figure 14. Writing the Header File to the Device
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Figure 15. Writing the Memh Files to the Device
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Device Description and Operation
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System Block Diagram
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Integrated Power Rectifier
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Figure 16. STWLC99 System Block Diagram
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Internal ADC Channel Monitor
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Adcin/Extmp
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Adcin2
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Figure 17. PC GUI Charts
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Main LDO Regulator
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Regulation Loops and Protections
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Dload
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Output Current Sensing
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Uvlo
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Chip Enable
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Power up Sequence
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VOUT Soft Start
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Table 3. WL_CTRL and WPOLSEL Logic Table
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Figure 18. Register for Soft Start Period Adjustment
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Figure 19. Example of Vout Soft Start Behavior with Vout Set to 5 V and Connected 9R Resistive Load
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Ldos
20
Protections Overview
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Two-Stage Soft Over-Voltage Protection (OVPS)
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Figure 20. Two-Stage OVPS Protection Threshold Setting
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Hard Over-Voltage Protection (OVPH)
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Figure 21. Two-Stage OVPS Protection Settings
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Figure 22. OVPH Protection Threshold Setting
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Figure 23. OVPH Protection Setting
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Figure 24. Hard Overvoltage Protection (OVPH)
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Firmware Over-Voltage Protection (ADC OVP)
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Figure 25. ADC OVP Protection Threshold Setting
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Figure 26. ADC OVP Protection Setting
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Output Over-Voltage Protection (VOUT OVP)
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Input Voltage Loop (IVL)
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Figure 27. VOUT OVP Protection Setting
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Figure 28. Input Voltage Loop Threshold Setting and Enable Option
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Figure 29. Example Waveform When IVL Is Activated
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Output Under-Voltage Protection (VOUT UVLO)
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Figure 30. VOUT UVLO Protection Threshold Setting
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Figure 31. VOUT UVLO Protection Settings
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Output Current Loop (OCL) with Over-Current Protection (OCP)
29
Table 4. Description of OCP Protection Behavior for Combinations of All Related Setting Registers
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Figure 32. Threshold Setting for over Current Protection
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Figure 33. OCP Protection Setting
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Firmware over Current Protection (ADC OCP)
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Figure 34. ADC OCP Protection Threshold Setting
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Figure 35. ADC OCP Protection Setting
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Hardware Thermal Shutdown (TSHUT)
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Figure 36. TSHUT Protection Threshold Setting
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Figure 37. TSHUT Protection Setting
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Firmware Over-Temperature Protection (ADC OVTP)
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Figure 38. ADC OVTP Protection Threshold Setting
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Figure 39. ADC OVTP Protection Setting
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Firmware NTC Over-Temperature Protection (ADC NTC)
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Figure 40. ADC NTC Protection Threshold Setting
34
Foreign Object Detection (FOD)
35
Figure 41. ADC NTC Protection Setting
35
WPC Qi Compliant Power Transfer Basics
36
Figure 42. Qi Baseline Power Profile (BPP) Flowchart
36
Wireless Power Interface
37
Bidirectional Communication
37
ASK Communication
37
Table 5. HI and lo State Parameters
38
Figure 43. HI and lo States in ASK Communication
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Figure 44. Example of Differential Bi-Phase Encoding Scheme
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Figure 45. Example of Asynchronous Serial Format
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Figure 46. ASK Modulation Capacitors Block Diagram
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FSK Communication
40
Figure 47. Example of Differential Bi-Phase Encoding
40
Most Common Qi Communication Packets
41
Figure 48. Example of Different Response Patterns
41
ST Super Charge (STSC)
42
Sending a Proprietary Packet from STWLC99 to STWBC2
42
Table 6. EPT Codes and Explanation
42
Figure 49. GUI Example Message with Header 0X48 and Payload 0Xa5 0X01 0X77 0Xce
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Figure 50. Step Sequencer Example Message with Header 0X48 and Payload 0Xa5 0X01 0X77 0Xce Filled in Buffer
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Figure 51. Step Sequencer Example - Sending Filled Message
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Adaptive Rectifier Configuration (ARC) Mode
45
Table 7. Improvement of Possible Z Distance with ARC Mode
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Figure 52. Startup Waveform with ARC Mode
45
Transmitter (Tx) Mode
46
I2C Interface
46
Data Validity
46
Start and Stop Conditions
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Figure 53. STEVAL-WLC99RX Circuitry for Tx Mode
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Byte Format
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Interface Protocol
47
Writing to a Single Register
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Figure 54. Writing to Single I 2 C Register
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Writing to Multiple Registers with Incremental Addressing
48
Reading from a Single Register
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Reading from Multiple Registers with Incremental Addressing
48
Figure 55. Writing to Multiple I C Registers
48
Figure 56. Reading from Single I C Register
48
Figure 57. Reading from Multiple I C Registers
48
Gpiox and INTB Pins
49
Table 8. GPIO Pins Overview
49
Table 9. GPIO Functions List
49
Interrupt Registers
50
Figure 58. Interrupt Settings Page
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Table 10. Interrupt Description
51
STEVAL-WLC99RX Description and Operation
52
Schematics
52
Figure 59. STEVAL-WLC99RX Schematic Diagram
52
Bill of Materials
53
Table 11. STEVAL-WLC99RX Bill of Materials
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STEVAL-WLC99RX Coil Description
55
Table 12. Electrical Characteristics of the Receiver Coil
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Figure 60. Mechanical Characteristics of the Receiver Coil
55
STEVAL-WLC99RX PCB Layout
56
Figure 61. STEVAL-WLC99RX PCB Layout Top Layer
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Figure 62. STEVAL-WLC99RX PCB Layout Inner 1 Layer
56
Figure 63. STEVAL-WLC99RX PCB Layout Inner 2 Layer
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Figure 64. STEVAL-WLC99RX PCB Layout Bottom Layer
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STWLC99 Default Configuration
58
Table 13. STWLC99 Default Configuration
58
Power-Up Waveforms
59
Efficiency and Spatial Freedom in the XY Plane
59
Figure 65. Power up Waveforms of STEVAL-WLC99 When Placed on STEVAL-WBC2TX70
59
Spatial Freedom in the Z-Axis
60
Figure 66. Efficiency Curves for Various Coil Misalignments
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Figure 67. Efficiency Curves for Various Coil Misalignment with Ptx Frequency Fixed to 140 Khz
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Table 14. Maximum Power for Z-Axis Gap (Coil-To-Coil Distance)
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Figure 68. Efficiency Curves for Various Coil-To-Coil Distances
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Figure 69. Efficiency Curves for Various Coil-To-Coil Distance with Ptx Frequency Fixed to 140 Khz
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Figure 70. STWLC99 Communication Performance During Startup at High Z Distance (15 MM Coil-To-Coil Distance)
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Thermal Performance
63
Figure 71. STEVAL-WLC99RX Thermal Performance with a 5 W Load (5 V/1 A) after 5 Minutes
63
Figure 72. STEVAL-WLC99RX Thermal Performance with a 35 W Load (20 V/1.75 A) after 5 Minutes
63
Figure 73. STEVAL-WLC99RX Thermal Performance with a 70 W Load (20 V/3.5 A) after 5 Minutes
64
Designing a Wireless Power Receiver Based on STEVAL-WLC99RX Evaluation
65
Board
65
External Component Design
65
Coil Selection
65
Series and Parallel Resonant Capacitor Selection
65
VRECT and VOUT Capacitors Selection
65
ASK Modulation Configuration
66
Table 15. Different Operation Modes of ASK Modulation Capacitor Pairs
66
Figure 74. ASK Modulation Configuration
66
Figure 75. Example of Waveform with no Output Load and COM a and COM B in Normal Mode
67
Figure 76. Example of Waveform with 700 Ma Output Load and COM a in Normal Mode and COM B Turned off
67
SOVP Clamp Resistor Selection
68
ESD/TVS Diodes
68
NTC Thermistor Connection
68
External Current Sense Resistor
68
Table 16. Parameters of Recommended Current Sense Resistor
68
Figure 77. External NTC Connection
68
PCB Layout Guidelines
69
LDO Configuration
69
Figure 78. LDO Drop Settings
69
External 5V Provision
70
Figure 79. Recommended Interrupts to Enable for Using External 5 V
70
FOD Tunning Guide
71
Rser
71
Power Compensation Curve
71
Figure 80. FOD Offset Defined Modification of Receive Power Example Diagram
71
Qi BPP FOD Tuning
72
Figure 81. Cleared BPP FOD Tuning Registers
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Figure 82. Rx FOD Tuning Update Table Line
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Figure 83. Filled Table with Data from Different Rx Loads
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Figure 84. FOD Tuning with Uncompensated/Untuned Power Difference Curve
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Figure 85. Power Difference Curve after Compensation (FOD Tuning)
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Figure 86. Compensated ∆P Values
74
Quick Coarse Method for FOD Tuning in STSC
75
STSC Quick Step Guide
75
Figure 87. GUI - Importing Quick Access Toolbar Buttons
75
Reference Code with STM32 Development Boards
77
Figure 88. GUI - Example of Using STSC Authentication Button and Reading Ptx Response
77
Figure 89. GUI - Example of Using STSC 9 V Button and Reading Ptx Response
77
Overview
78
Hardware Requirements
78
Hardware Connections
78
Software Requirements
78
Source Files
78
Reference Code Porting Procedure
78
Figure 90. Pin Connection between Host and STWLC99 Chip / Evaluation Board
78
Api
80
Table 17. Stwlc99_Write_Fwreg
80
Table 18. Stwlc99_Read_Fwreg
80
Table 19. Stwlc99_Get_Chip_Info
80
Table 20. Stwlc99_Fw_Update
80
Error Codes
81
Testing and Debugging - Common Issues
81
Table 21. Error Codes with Descriptions
81
Qi Certification
82
Figure 91. Qi Certification Process
82
Regulatory Compliance Information
83
Board Versions
84
Table 22. STEVAL-WLC99RX Versions
84
Revision History
85
Table 23. Document Revision History
85

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