ST STEVAL-WBC2TX70 Manuals

Manuals and User Guides for ST STEVAL-WBC2TX70. We have 1 ST STEVAL-WBC2TX70 manual available for free PDF download: User Manual

ST STEVAL-WBC2TX70 User Manual (84 pages)

wireless power transmitter evaluation board

Brand: ST | Category: Motherboard | Size: 12 MB

Figure 1. STEVAL-WBC2TX70 Evaluation Board

1
1 Getting Started

2
Table 1. Reference Design Specifications

3
2 Reference Design Specifications

3
- Figure 2. Board Overview
  
  4
- Test Points
  6
3 Overview of the Board

4
- Table 2. Test Points
  
  6
- Figure 3. Test Points
  
  6
- Basic Operating Modes
  7
- Status Leds
  7
- Table 3. Status Leds Meaning
  
  7
- Figure 4. Block Diagram
  
  8
- Bridge Current Monitor
  9
- Bridge Voltage Monitor
  9
- DC-DC Current Monitor
  9
- Onboard Voltage Sources
  9
  - DC-DC Buck Converter
    9
  - The 3.3 V LDO
    9
  - The 1.8 V LDO
    9
  - Voltage Doubler
    9
- Ring Voltage Monitor
  9
- Chip Reset
  10
- Power up Sequence
  10
- Protections Overview
  10
  - Main Overcurrent Protection (OCP)
    10
  - Overvoltage Protection (OVP)
    10
  - Voltage Drop
    11
  - RX Overvoltage Protection - Static/Dynamic OVP, Currentdrop OVP
    11
  - Overtemperature Protection (OVTP)
    11
  - Ntc
    11
  - Qfod
    11
- Uvlo
  10
- Foreign Object Detection (FOD)
  11
  - Presence Detection
    11
  - Comparing to Reference Q Factor
    12
  - Power Balance
    12
- EPT Reason
  12
- WPC Qi Wireless Power Transfer
  12
  - Baseline and Extended Power Profiles
    12
4 Device Description and Operation

8
- Adc
  8
- Power Inverter
  8
- System Block Diagram
  8
- Bidirectional Communication
  14
  - ASK Communication
    14
  - Figure 8. Example of Bit Encoding
    
    15
  - Figure 9. Example of Byte Encoding
    
    16
  - Figure 10. Format of the Three Defined Messages
    
    17
  - Most Common Qi Communication Packets
    17
  - Stlink
    18
    
    STLINK Drivers
    18
  - Stm32Cube Programmer
    18
    
    Firmware Flash Programming
    19
  - Figure 11. STLINK Parameters
    
    19
  - Figure 12. Programming the Chip
    
    19
  - Uart
    20
    
    Firmware Update Without GUI
    20
    
    UART Configuration
    20
- Figure 7. ASK Timing
  
  15
- FSK Communication
  16
- Table 8. Memory Write Command
  
  22
- Table 7. Memory Erase Command
  
  22
- Bootloader and Boot Pin
  23
- Stsafe
  23
  - STSAFE-A110 for Qi Authentication
    23
5 Graphical User Interface (GUI)

27
- Connecting STWBC2 to the GUI
  27
  - Figure 17. Port Selection
    
    28
  - Figure 18. Status Semaphore
    
    28
  - Figure 19. Event Box
    
    29
  - Table 11. Available Events
    
    30
  - Device Metrics
    33
- Event Box
  29
  - Figure 21. Input Power Supply Indication
    
    33
    
    Figure 20. Device Metrics
    33
    
    Figure 23. Rx Identification Data
    35
    
    Figure 24. Example of Captured Charts
    36
    
    Parameters Page
    36
    
    Table 12. Chart Controls and Shortcuts
    36
    
    Figure 25. Save and Load Buttons
    37
    
    Table 13. List of Configurable Parameters
    37
    
    Figure 26. Read and Write Operation Buttons
    40
    
    Figure 27. Save Button, Choosing of Saved Data Type and Save Dialog
    40
    
    Read/Write to Device
    40
    
    Traces Page
    40
    
    Using Traces for FOD Tuning Data Collection
    40
    
    Figure 28. Test Points
    42
    
    Current Drop OVP
    43
    
    Dynamic OVP
    43
    
    Ring Node Overvoltage
    43
  - Figure 22. Device Information
    
    35
  - Configuration File
    37
  - Device Parameters
    37
  - FW Page
    41
    
    Calibration
    41
    
    Loading the Firmware into an Empty Device
    41
    
    Obtaining the Firmware Update File
    41
    
    Updating Firmware of a Previously Programmed Device
    41
    
    Recommended Flow of Prototyping and Production
    42
  - Protection Tuning
    42
    
    Foreign Object Detection
    42
    
    Static OVP
    42
- Rx Information
  35
- Tx Information
  35
- Charts Page
  36
  - Chart Controls and Shortcuts
    36
6 STEVAL-WBC2TX70 Description

44
Figure 47. Thermal Performance

63
7 Designing a Wireless Power Transmitter Based on STEVAL-WBC2TX70

64
- Evaluation Board
  
  64
- BOM Reduction Suggestions
  64
  - Figure 48. Layer 1 High Power Tracks
    
    64
    
    Figure 49. Layer 4 GND
    65
    
    Figure 50. Placement of Input Connectors, Filtering, and Protections
    66
    
    VIN, Vbuck, and Vdoubler
    67
  - Board Input Layout
    66
- Layout Guidelines
  64
  - High Power Tracks
    64
- Ground Plane on Layer 4
  65
- VIN ISNS Routing
  69
Figure 56. Bridge ISNS Routing

71
Figure 57. DC-DC Short Path through Q404

71
8 Board Versions

72
Table 16. STEVAL-WBC2TX70 Versions

72
9 Regulatory Compliance Information

73
10 References

74
11 Acronyms and Definition

75
Table 17. List of Acronyms

75
Revision History

76
Table 18. Document Revision History

76

ST Categories

Motherboard Computer Hardware Microcontrollers Control Unit Controller

More ST Manuals

ST STEVAL-WBC2TX70 Manuals

ST STEVAL-WBC2TX70 User Manual (84 pages)

Table of Contents

Figure 1. STEVAL-WBC2TX70 Evaluation Board

1 Getting Started

Table 1. Reference Design Specifications

2 Reference Design Specifications

Figure 2. Board Overview

3 Overview of the Board

Table 2. Test Points

Figure 3. Test Points

Table 3. Status Leds Meaning

Figure 4. Block Diagram

4 Device Description and Operation

Figure 5. Difference between BPP and EPP Power Transfer Startup

Figure 6. ASK Modulation

Figure 8. Example of Bit Encoding

Figure 9. Example of Byte Encoding

Figure 10. Format of the Three Defined Messages

Figure 11. STLINK Parameters

Figure 12. Programming the Chip

Figure 7. ASK Timing

Figure 13. Bootloader Start

Table 8. Memory Write Command

Table 7. Memory Erase Command

5 Graphical User Interface (GUI)

Figure 17. Port Selection

Figure 18. Status Semaphore

Figure 19. Event Box

Table 11. Available Events

Figure 21. Input Power Supply Indication

Figure 22. Device Information

6 STEVAL-WBC2TX70 Description

Figure 29. STEVAL-WBC2TX70 Circuit Schematic (1 of 6)

Figure 30. STEVAL-WBC2TX70 Circuit Schematic (2 of 6)

Figure 47. Thermal Performance

7 Designing a Wireless Power Transmitter Based on STEVAL-WBC2TX70

Evaluation Board

Figure 48. Layer 1 High Power Tracks

Figure 51. Larger Tracks of DC-DC Buck, VIN

Figure 54. DC-DC Boost Circuit Routing

Figure 55. Main Bridge Circuit

Figure 56. Bridge ISNS Routing

Figure 57. DC-DC Short Path through Q404

8 Board Versions

Table 16. STEVAL-WBC2TX70 Versions

9 Regulatory Compliance Information

10 References

11 Acronyms and Definition

Table 17. List of Acronyms

Revision History

Table 18. Document Revision History

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