Renesas RA9530-R User manual

Manual
RA9530
-R
Evaluation Kit
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 1
© 2022 Renesas Electronics
The RA9530-R-EVK Wireless Power Evaluation
Board can demonstrate the features and
performance of the RA9530 Wireless Power
Receiver with WattShare™ mode. The board comes
with pre-programmed reference firmware in which
GPIOs are configured for specific functions that meet
broader customer requirements.
The RA9530 features Multiple-Time Programmable
(MTP) non-volatile memory that enables customers
to customize the design parameters such as default
output voltage and FOD thresholds. The RA9530
includes over-temperature and voltage protection.
Fault conditions associated with power transfer are
managed by an industry-leading 32-bit ARM®
Cortex®-M0 processor offering a high level of
programmability while consuming low standby power.
The RA9530 Windows Graphical User Interface
(GUI) can be used to configure the design
parameters, monitor operating parameters such as
Rectifier voltage, and program the new configuration
into the RA9530.
The RA9530-R-EVK is designed for evaluation
purposes only. It must not be used for module or
mass production purposes.
Evaluation Kit Contents
■RA9530-R Demo Board assembled with coil
Features
■Delivers up to 30W of power in Renesas high
power mode when paired with P9247-GB-EVK
■±1.5% accurate output current sensing for robust
FOD detection
■WattShareTM TRx mode with up to 10W Tx
capability
■Supports latest WPC 1.3 specification
■Supports bi-directional data communications
■90% peak efficiency (system end-to-end)
■Switch mode PCLAMP/ECLAMP for robust
overvoltage clamping
■Embedded 32-bit ARMTM Cortex®-M0 processor
■32kB EEPROM memory to support OTA updates
■Easy to use GUI for customizing the design
parameters
■1.2V and multiple other IO voltage rail support to
interface with processors of advanced technology
nodes
■RA9530 Device Package: 6 × 8 ball array, 2.53 ×
3.31 × 0.60 mm, 48-DSBGA with 0.40mm ball
pitch
Evaluation Board
SCL
SDA
GND
J1 Test
Connector
RA9530
VRECT
VOUT

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 2
Contents
1. Board Setup.................................................................................................................................................... 7
Required or Recommended User Equipment ....................................................................................... 7
Required Software on Computer........................................................................................................... 7
Software Installation................................................................................................................ 7
Usage Guide.......................................................................................................................................... 8
Kit Hardware Connections for Rx Mode................................................................................................ 8
Start Guide for Rx Operation................................................................................................... 8
Rx Start Up.............................................................................................................................. 9
Modulation Waveform............................................................................................................. 9
Load Step.............................................................................................................................. 10
Load Dump............................................................................................................................ 10
Rx System Efficiency ............................................................................................................ 11
Rx Rectifier Voltage Level..................................................................................................... 12
Power Good operation – GP0............................................................................................... 14
INHIBIT – OD4...................................................................................................................... 15
Kit Hardware Connections for Wattshare (TRx) Mode........................................................................ 16
Start Guide for Wattshare TRx Mode Operation................................................................... 16
Wattshare TRx Mode Input Voltage...................................................................................... 18
TRx Mode Auto-Enable......................................................................................................... 18
TRx System Efficiency .......................................................................................................... 19
2. RA9530-R-EVK Evaluation Board Test Point and Connector ................................................................. 19
RA9530-R-EVK Evaluation Board Test Point Placement.................................................................... 19
J3 Dongle Connector Pin Descriptions................................................................................. 19
J1 Test Connector Pin Descriptions...................................................................................... 20
3. Hardware Connections Renesas USB-I2C Dongle to Windows GUI...................................................... 20
Using the GUI to Program the RA9530............................................................................................... 21
Using the GUI to Read / Write to Registers......................................................................................... 25
Using the GUI to Read / Write Configuration Parameters to EEPROM.............................................. 27
4. Rx Mode Functions...................................................................................................................................... 27
Synchronous Rectifier.......................................................................................................................... 27
Rectifier and VRECT Level.................................................................................................................. 28
Over-Voltage Protection...................................................................................................................... 28
Over-Current Protection, Over-Temperature Protection, and Thermal Shutdown.............................. 28
LDO Regulators................................................................................................................................... 28
MLDO Output Enable Conditions........................................................................................................ 28
Renesas High-Power Mode................................................................................................................. 29
5. Wattshare Mode TRx Functions................................................................................................................. 30
Demodulator........................................................................................................................................ 30
WattShare Mode Input Under Voltage, Over Voltage, and Current Limit............................................ 30
Transmitter Conflict in WattShare Mode.............................................................................................. 30
6. TRx Wireless Power Coil............................................................................................................................. 31
7. Resonance Capacitors................................................................................................................................ 31

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 3
8. Input Capacitor (VRECT Capacitors)......................................................................................................... 31
9. Output Capacitor (VOUT Capacitors) ........................................................................................................ 31
10. LDO1P5 Capacitor ....................................................................................................................................... 31
11. LDO5P0 Capacitor ....................................................................................................................................... 31
12. PCLAMP Connection................................................................................................................................... 32
13. GPIO Pins ..................................................................................................................................................... 32
OD0/SCL Pin....................................................................................................................................... 33
OD1/SDA Pin....................................................................................................................................... 33
OD2/nINT Pin ...................................................................................................................................... 33
OD4/INHIBIT(SLEEP).......................................................................................................................... 33
GP0/PWRGD Pin................................................................................................................................. 33
GP2/TX_EN......................................................................................................................................... 33
Unused GP/OD Pin.............................................................................................................................. 33
14. Foreign Object Detection............................................................................................................................ 33
FOD Parameters in Receiver Mode .................................................................................................... 34
FOD Parameters in Transmitter Mode ................................................................................................ 35
15. I2C Function.................................................................................................................................................. 35
16. Board Design................................................................................................................................................ 36
Schematic Diagram ............................................................................................................................. 36
Bill of Materials .................................................................................................................................... 37
Board Layout ....................................................................................................................................... 40
17. Device Registers.......................................................................................................................................... 47
Common Registers.............................................................................................................................. 47
Chip Type (0x0000, 16-Bit)................................................................................................... 47
Hardware Revision (0x0002, 8-Bit)....................................................................................... 47
Customer Code (0x0003, 8-Bit) ............................................................................................ 47
Firmware Beta Revision (0x0017, 8-Bit)............................................................................... 47
Firmware Minor Revision (0x001C, 16-Bit)........................................................................... 48
Firmware Major Revision (0x001E, 16-Bit) ........................................................................... 48
WPC Manufacturer ID (0x004A, 16-Bit)................................................................................ 48
Firmware Date Code (0x00C4 - 0x00CF, 12 Bytes)............................................................. 49
Firmware Time Code (0x00D4 - 0x00DB, 8 Bytes)............................................................... 50
System Operating Mode Register (0x004D, 8-Bit)................................................................ 50
RX Mode Registers.............................................................................................................................. 51
System Interrupt Clear Register in RX Mode (0x0028 - 0x002B, 32-Bit).............................. 51
System Status Register in RX Mode (0x002C - 0x002F, 32-Bit).......................................... 52
System Interrupt Register in RX Mode (0x0030 - 0x0033, 32-Bit)........................................ 54
System Interrupt Enable Register in RX Mode (0x0034 - 0x0037, 32-Bit) ........................... 56
Battery Charge Status Register (0x003A, 8-Bit)................................................................... 57
End of Power Transfer Register in RX Mode (0x003B, 8-Bit)............................................... 58
Vout ADC Reading (0x003C, 16-Bit)..................................................................................... 58
Vout Set Register (0x003E, 16-Bit)....................................................................................... 58
Vrect ADC Reading (0x0040, 16-Bit).................................................................................... 58

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 4
Iout Value Register (0x0044, 16-Bit)..................................................................................... 59
System Command Register (0x004E, 16-Bit)....................................................................... 59
Proprietary Data-Out Registers (0x0050 - 0x0057, 8 Bytes) ................................................ 60
Proprietary Data-In Registers (0x0058 - 0x005F, 8 Bytes)................................................... 60
ILIM Register (0x0060, 8-Bit) ................................................................................................ 60
Over Voltage Register (0x0061, 8-Bit).................................................................................. 61
Reference Resonance Frequency Register (0x0065, 8-Bit)................................................. 61
RX Mode Communication Modulation FET Register (0x0067, 8-Bit) ................................... 61
FOD Registers (0x0068 - 0x0077, 16 Bytes)........................................................................ 62
Fast Charging Voltage Register (0x0078, 16-Bit)................................................................. 62
Vout Value Register (0x0080, 16-Bit) ................................................................................... 62
Vrect Value Register (0x0082, 16-Bit) .................................................................................. 63
Die Temperature Value Register (0x0084, 16-Bit)................................................................ 63
Operating Frequency Register (0x0086, 16-Bit)................................................................... 63
Digital Ping Frequency Register (0x0088, 16-Bit)................................................................. 63
CEP Value Register (0x00A5, 8-Bit)..................................................................................... 63
Tx Manufacturer Code Register (0x00B0, 16-Bit)................................................................. 63
TX Guaranteed Power Register (0x00B3, 8-Bit)................................................................... 64
TX WPC Revision ID Register (0x00B6, 8-Bit)..................................................................... 64
Re-Negotiation Status Register (0x00B7, 8-Bit) ................................................................... 64
Current Guaranteed Power (0x00B9, 8-Bit).......................................................................... 64
Request Guaranteed Power (0x00BD, 8-Bit)........................................................................ 64
Q-FACTOR Register (0x00D2, 8-Bit).................................................................................... 64
Signal Strength Packet Register (0x00D3, 8-Bit).................................................................. 65
Hvod Sink Current Register (0x00F9, 8-Bit) ......................................................................... 65
Software Over Current Threshold Register (0x010C, 16-Bit) ............................................... 65
Software Over Current Threshold Hysteresis Register (0x010E, 8-Bit)................................ 65
Vrect Knee Register (0x0142, 8-Bit)..................................................................................... 65
Vrect Correction Factor Register (0x0143, 8-Bit).................................................................. 65
Vrect Maximum Correction Register (0x0144, 16-Bit) .......................................................... 66
Vrect Minimum Correction Register (0x0146, 16-Bit) ........................................................... 66
FOD Section Register (0x0149, 8-Bit)................................................................................... 66
Vrect Adjust Register (0x014E, 8-Bit) ................................................................................... 66
18. TX Mode Register ........................................................................................................................................ 67
System Interrupt Clear Register in TX Mode (0x0028 - 0x002B, 32-Bit)............................................. 67
System Status Register in TX Mode (0x002C - 0x002F, 32-Bit)......................................................... 68
System Interrupt Register in TX Mode (0x0030 - 0x0033, 32-Bit)....................................................... 69
System Interrupt Enable Register in TX Mode (0x0034 - 0x0037, 32-Bit) .......................................... 70
Battery Charge Status Register (0x003A, 8-Bit).................................................................................. 71
End of Power Transfer Register in TX Mode (0x003B, 8-Bit).............................................................. 71
Iin Value Register (0x0044, 16-Bit)...................................................................................................... 71
Proprietary Data-Out Registers (0x0050 - 0x0057, 8 Bytes)............................................................... 71
Proprietary Data-In Registers (0x0058 - 0x005F, 8 Bytes) ................................................................. 72
Tx EPT Type Register (0x007A, 16-Bit).............................................................................................. 72
TX System Command Register (0x007C, 16-Bit)................................................................................ 73

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 5
TX Status Register (0x007E, 8-Bit) ..................................................................................................... 74
Vin Value Register (0x0080, 16-Bit).................................................................................................... 74
Vrect Value Register (0x0082, 16-Bit)................................................................................................. 74
Die Temperature Value Register (0x0084, 16-Bit).............................................................................. 74
CEP Value Register (0x00A5, 8-Bit).................................................................................................... 74
Rx Manufacturer Code Register (0x00B0, 16- Bit).............................................................................. 74
Signal Strength Packet Register (0x00D3, 8-Bit) ................................................................................ 75
Ping Interval Register (0x00E0, 16-Bit)............................................................................................... 75
Ping Frequency Register (0x00E2, 16-Bit).......................................................................................... 75
Ping Duty Setting Register (0x00E4, 8-Bit) ......................................................................................... 75
Low Voltage Threshold Register (0x00EC,16-Bit).............................................................................. 75
Over Voltage Threshold Register (0x00E8,16-Bit) ............................................................................. 75
FOD Low Segment Threshold Register (0x00F8, 16-Bit).................................................................... 76
FOD High Segment Threshold Register (0x00FA, 16-Bit) .................................................................. 76
FOD Segment Threshold Register (0x00FC, 16-Bit)........................................................................... 76
Over Current Threshold Register (0x0108, 16-Bit).............................................................................. 76
Minimum Operating Frequency in FB Register (0x0114, 16-Bit)......................................................... 76
Minimum Operating Frequency in HB Register (0x0116, 16-Bit)........................................................ 77
Maximum Operating Frequency Register (0x0118 16-Bit).................................................................. 77
Minimum Duty Register (0x011A,8-Bit) .............................................................................................. 77
TX DC Power Register (0x0156,16-Bit).............................................................................................. 77
Operating Frequency Register (0x0182, 16-Bit).................................................................................. 77
Operating Duty-Cycle Register (0x018C, 8-Bit)................................................................................... 78
BLE MAC Address Registers (0x01B4 - 0x01B9, 6 Bytes)................................................................. 78
19. Ordering Information................................................................................................................................... 78
20. Revision History .......................................................................................................................................... 78
Figures
Figure 1. Windows Device Manager Display for the USB Connection.....................................................................7
Figure 2. Evaluation Kit Connections for Rx Mode Test...........................................................................................8
Figure 3. Rx Start Up................................................................................................................................................9
Figure 4. ASK Modulation Signal on CM1 and CM2................................................................................................9
Figure 5. Load Step................................................................................................................................................10
Figure 6. Load Dump..............................................................................................................................................10
Figure 7. Efficiency on P9235A-RB Tx (BPP, Vout = 5V) ......................................................................................11
Figure 8. Efficiency on P9243-GB Tx (EPP, Vout = 10V).......................................................................................11
Figure 9. Efficiency on P9243-GB Tx (High Power, Vout = 20V)...........................................................................12
Figure 10. Rx VRECT Target Voltage on P9243-GB Tx (EPP Mode)....................................................................13
Figure 11. Rx Vrect Target Voltage on P9235A-RB Tx (BPP Mode).....................................................................13
Figure 12. GP0 Output High when EPP Negotiation is Complete by Default (EPP Mode)....................................14
Figure 13. GP0 Output High when VOUT Turns on (BPP Mode) ..........................................................................14
Figure 14. No ASK Packet when INHIBIT High at Start Up ...................................................................................15
Figure 15. Send EPT Packet when INHIBIT High at Power Transfer Phase.........................................................15
Figure 16. Evaluation Kit Connections for TRx Mode Test ....................................................................................16

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 6
Figure 17. TRx Mode Digital Ping Waveform.........................................................................................................17
Figure 18. TRx Mode Charging Waveform.............................................................................................................17
Figure 19. TRx Mode Charging Waveform.............................................................................................................18
Figure 20. TRx System Efficiency...........................................................................................................................19
Figure 21. USB to I2C Dongle Header of “USB-FTDI-V2-1”(FTDI) Dongle...........................................................21
Figure 22. USB to I2C Dongle Header of “WPD-USB- DONGLE”.........................................................................21
Figure 23. USB-I2C Bridge Connected to I2C Terminal J1 of RA9530-R EVK Board...........................................21
Figure 24. Initial Screen of RA9530-R GUI ............................................................................................................22
Figure 25. USB-bridge is Detected; RA9530 is Not Connected.............................................................................22
Figure 26. RA9530 EEPROM Programming Using I2C Slave Device Address 0x3B............................................23
Figure 27. EEPROM Programming Successful......................................................................................................23
Figure 28. FW Program Verification Success.........................................................................................................24
Figure 29. Verify FW Revision and Date Code.......................................................................................................24
Figure 30. Read / Write to Registers......................................................................................................................25
Figure 31. Basic Tab, after Clicking “Read 1 time”.................................................................................................26
Figure 32. Scripts Tab, after Clicking “Run” ...........................................................................................................26
Figure 33. Config Tab, after click “Read chip”........................................................................................................27
Figure 34. HPP Start-Up Waveform.......................................................................................................................29
Figure 35. WattShare Mode Demodulation Filter...................................................................................................30
Figure 36. PCLAMP Operation at OVP Condition in BPP Mode............................................................................32
Figure 37. Top and Top Silkscreen Layer ..............................................................................................................40
Figure 38. Inner1 Layer (GND Layer).....................................................................................................................41
Figure 39. Inner2 Layer (POWER/Signal/GND Layer)...........................................................................................42
Figure 40. Inner3 Layer (POWER/Signal/GND Layer)...........................................................................................43
Figure 41. Inner4 Layer (POWER/Signal/GND Layer)...........................................................................................44
Figure 42. Bottom Layer.........................................................................................................................................45
Figure 43. Assembly Drawing.................................................................................................................................46
Tables
Table 1. Coil Manufacturer .....................................................................................................................................31
Table 2. Recommended Maximum Estimated Power Loss....................................................................................34

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 7
1. Board Setup
Required or Recommended User Equipment
The following additional equipment is required for using the kit:
■P9247-GB-EVK (REA High power mode enabled Tx) or P9243-GB-EVK (EPP transmitter with fast charge
modes) or any WPC-certified transmitter for Rx mode test
■DC power source or adapter that power transmitter
■P9222-R EVK or any WPC-certified receiver for Wattshare (TRx) mode test
■Electronic load that can be connected to the RA9530-R-EVK
■WPD-USB-DONGLE for connecting with RA9530-R Windows GUI on computer and doing I2C transactions.
WPD-USB- DONGLE is not shipped along with evaluation board and needs to be ordered separately
Required Software on Computer
Visit the RA9530-R-EVK web page and download latest version of the RA9530 Windows GUI and USB drivers.
The Window GUI software provides an intuitive GUI for reading and writing to RA9530 registers, and
programming custom user configurations to internal MTP memory.
Software Installation
Complete the following procedures to install the software:
1. Do not connect the WPD-USB-DONGLE dongle before installing the software.
2. Run the RA9530-R Windows GUI exe file. If you encounter a USB driver issue, please complete the
following steps.
a. Run the downloaded USB Drivers Setup executable file and follow the user prompts to install the USB
drivers.
b. After finishing the setup of the USB drivers, connect one of the WPD-USB-DONGLE dongles to the USB
port. Wait for a few moments to let Windows®map the drivers for the dongle.
c. Open the Device Manager from the Windows control panel and check the devices listed under
“Universal Serial Bus controllers” section. “FT4222H Interface A” and “FT4222H Interface B” should
appear in this section as shown in the following figure.
Figure 1. Windows Device Manager Display for the USB Connection

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 8
Usage Guide
The RA9530-R-EVK board can demonstrate the performance and functionality of the RA9530 wireless power
receiver with TRX mode in a lab bench test environment.
Kit Hardware Connections for Rx Mode
Complete the following procedures to set up the kit as shown in Figure 2:
1. Set up the P9247-GB-EVK (REA high-power mode enabled Tx) or P9243-GB-EVK (EPP transmitter with fast
charge modes) or other WPC certified transmitter according to the board’s user manual and apply power.
2. Place the RA9530-R-EVK board on the transmitter coil surface with the coil back facing upwards.
3. Verify that the red LED on the P9247-GB EVK board is illuminated, which indicates that power transfer has
been established.
Figure 2. Evaluation Kit Connections for Rx Mode Test
Start Guide for Rx Operation
Place the bottom side of RA9530-R EVK onto an P9247-GB-EVK (REA High power mode enabled Tx) or P9243-
GB-EVK (EPP transmitter with fast charge modes) or other WPC certified Tx unit. The RA9530-R-EVK includes
a 55 × 55 × 0.4 mm TRx coil assembly. The charging pad can be a pre-powered and can be powered after
placing the Rx coil on Tx charging pad.
Measure Rx output voltage at the VOUT test point to ground (GND). For convenience and measurement
accuracy, two test points have been placed which allow for kelvin voltage sensing of the output voltage to omit
conduction losses during evaluation (VOUT and GND). These should be used when performing efficiency
measurements. The I2C dongle connector J3 can be used to interface with WPD-USB-DONGLE for
programming the user configurable design parameters and it can be used to monitor the system status, mode,
operating frequency, voltage, and current.

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 9
Rx Start Up
These procedures demonstrate Rx start-up operation:
1. Set up the Tx as described in section 1.4 and provide 18V DC to P9243-GB Vin.
2. Place Rx on Tx interface surface.
3. Trigger oscilloscope sweep on VRECT, VOUT and AC1 test point when Rx starts up.
Figure 3. Rx Start Up
Modulation Waveform
RA9530-R modulates Rx AC signal with communication capacitor to send ASK packet to Tx.
Figure 4. ASK Modulation Signal on CM1 and CM2

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 10
Load Step
The procedure for load step is as follows
1. Set up the Tx as described in section 1.4.
2. Provide a Rx Vout load from no load (high impedance) to 7ohm
3. Monitor load current, VRECT and VOUT voltage as shown in the following figure.
Figure 5. Load Step
Load Dump
The procedure for load dump is as follows
1. Set up the Tx as described in section 1.4.
2. Provide a Rx Vout load from 7ohm to no load (high impedance).
3. Monitor load current, VRECT and VOUT voltage as shown in the following figure.
Figure 6. Load Dump

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 11
Rx System Efficiency
Figure 7 and Figure 8 show the Rx system efficiency using Tx P9235A-RB (BPP) and P9243-GB (EPP, HPP).
Rx power is measured across RA9530-R VOUT and GND. Tx power is measured across Tx VIN and GND.
Figure 7. Efficiency on P9235A-RB Tx (BPP, Vout = 5V)
Figure 8. Efficiency on P9243-GB Tx (EPP, Vout = 10V)

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 12
Figure 9. Efficiency on P9243-GB Tx (High Power, Vout = 20V)
Rx Rectifier Voltage Level
Rx Vrect target voltage level is changed by Rx Iout current for system stability and optimal efficiency
performance. The test procedure is as follows:
1. Set up the Tx as described in section 1.4.
2. Provide 18V DC to P9242-GB Vin (EPP Tx) and 5V DC to P9235A-RG Vin (BPP Tx).
3. Change Rx Iout load current from low to maximum gradually and monitor Rx Vrect voltage level.

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 13
Figure 10. Rx VRECT Target Voltage on P9243-GB Tx (EPP Mode)
Figure 11. Rx Vrect Target Voltage on P9235A-RB Tx (BPP Mode)

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 14
Power Good operation – GP0
GP0 functions as power good indication. Figure 10 and Figure 11 show EPP and BPP mode power good
waveform.
Figure 12. GP0 Output High when EPP Negotiation is Complete by Default (EPP Mode)
Figure 13. GP0 Output High when VOUT Turns on (BPP Mode)

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 15
INHIBIT – OD4
OD4 functions as INHIBIT(Sleep) operation. If OD4 is high, Rx does not send ASK packet at start up and sends
End Power Transfer packet at power transfer phase.
Figure 14. No ASK Packet when INHIBIT High at Start Up
Figure 15. Send EPT Packet when INHIBIT High at Power Transfer Phase

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 16
Kit Hardware Connections for Wattshare (TRx) Mode
To set up the kit as shown in Figure 16, complete the following procedure:
1. Supply power on RA9530-R-EVK VOUT with DC power supply (7.5V).
2. Connect a WPD-USB-DONGLE on the RA9530-R-EVK J3 connector. USB dongle black line (GND) should
be on J3 Pin3.
3. Send TRx mode command with RA9530-R Windows GUI (write 0x01 on 0x007C register).
4. Place the P9222-R-EVK Board or WPC-certified receiver on the reverse side of the RA9530-R-EVK.
RA9530-R-EVK PCB boards acts as a spacer between Tx surface and Rx coil.
5. Verify that the green LEDs on P9222-R is illuminated, which indicates that power transfer has been
established.
Figure 16. Evaluation Kit Connections for TRx Mode Test
Start Guide for Wattshare TRx Mode Operation
The RA9530 can be configured as a wireless power transmitter. The device uses an on-chip full/half-bridge
inverter, a PWM generator, a modulator/demodulator for communication, and a microcontroller to produce an AC
power signal to drive external L-C tank to operate as a wireless power transmitter (TRx). The RA9530 uses the
same L-C tank in both Rx mode and TRx mode. In TRx mode, the power needs to be applied on the VOUT pin
first which is the same node as the power receiver output when the device operates in Rx Mode. To avoid Tx
conflict, ensure that the RA9530-R-EVK is not on the Tx pad.

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 17
1. Supply power (5V to 9V) on RA9530-R-EVK VOUT.
2. Write 0x0001 data to 0x007C register to enable TRx mode with RA9530-R Windows GUI or another I2C tool.
3. RA9530 starts sending digital pings after enabling TRx mode. Probe AC1 and check digital ping waveform.
Figure 17. TRx Mode Digital Ping Waveform
4. Place the WPC compliant receiver on the RA9530-R-EVK TRx coil. The RA9530 will detect the Rx device
and start power transfer right after WPC ID and Configuration packet.
5. Probe Rx VRECT and Rx VOUT, and confirm that charging is functional.
Figure 18. TRx Mode Charging Waveform

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 18
6. TRx default digital ping frequency is 171kHz and the normal operating frequency range is from 115kHz to
145kHz in the default configuration. They can be changed using the RA9530-R GUI.
Wattshare TRx Mode Input Voltage
The RA9530 can transfer up to 5W of power in TRx mode. It follows the WPC 1.2.4 BPP protocol to transfer the
power to other Qi-certified receivers such as mobile devices and earbud charging cases. The maximum power
delivered in TRx mode depends on the input voltage on the VOUT pin, coil characteristics (such as AC
resistance), and the friendly metal around the coil. Because the coil used for power transfer in TRx mode has
high AC resistance compared to transmitter coil used in a charging pad, the input voltage on the VOUT pin in
TRx mode must be around 7 to 9V to deliver 5W of power to the receiver.
TRx Mode Auto-Enable
The RA9530-R enters into TRx mode automatically if GP2 level is high when Vout is powered by external power
or AP. The RA9530-R starts sending digital ping on TRx AC lines.
1. Pull up the GP2 test pin with external power 1.8V.
2. Provide 5V DC on RA9530-R VOUT.
3. Monitor AC line if digital ping signal comes out periodically.
Figure 19. TRx Mode Charging Waveform

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 19
TRx System Efficiency
Figure 20Figure 19 shows TRx system efficiency using P9415-R Rx at 7.5V and 9V TRx input voltage
conditions. TRx power is measured across RA9530-R VOUT and GND. Rx power is measured across R9415-R
VOUt and GND.
Figure 20. TRx System Efficiency
2. RA9530-R-EVK Evaluation Board Test Point and Connector
There are many test points placed around the RA9530-R_EVK board that can be used for quick and easy
evaluation of RA9530 performance. VOUT, VRECT, and GND have large size test points for easy test cable
connection for supplying power and loading. J3 and J1 are the pin type connector for USB-I2C bridge dongle
interface connection and system configuration and monitoring.
RA9530-R-EVK Evaluation Board Test Point Placement
To locate the test points, see “Board Layout” section.
J3 Dongle Connector Pin Descriptions
Pin Number
Name
Type
Description
1
SCL
Input
I2C Interface Clock signal
2
SDA
Input /Output
I2C Interface Data signal
3
GND
Power
Ground Reference
4
VRECT
Power
Dongle Power supply from USB Dongle Cable (Optional)
5
OD2_NINT
Output
Interrupt Signal from RA9530. Connect OD2_NINT to AP GPIO with PU

RA953-R Evaluation Kit Manual
R16UH0022EU0200 Rev.2.00
Jul 22, 2022
Page 20
J1 Test Connector Pin Descriptions
Pin Number
Name
Type
Description
1
SCL
Input
I2C Interface Clock signal
2
SDA
Input /Output
I2C Interface Data signal
3
GND
Power
Ground Reference
4
OD2_NINT
Output
Interrupt Signal from RA9530. Connect OD2_NINT to AP GPIO with PU
5
OD3
Input/Output
Reserved
6
OD4
Input/Output
INHIBIT(SLEEP)
7
VRECT
Power
VRECT power supply from USB dongle
8
GP0
Output
POWER GOOD Signal from LDO1p5 (Optional)
9
GP1
Input/Output
Available for GPIO Use. Connect to ground if not used
10
GP2
Input
TX EN
11
LDO5P0
Power
Internal Power Regulator 5.0V
12
LDO1P5
Power
Internal Power Regulator 1.5V
13
VDDIO
Input/Output
Internal capless LDO is connected and programmable as 1.2V/1.5V/1.8V. (Can
be powered externally)
14
AP5V
Input
5V powered externally from AP (Optional)
15
GND
Power
Ground Reference
3. Hardware Connections Renesas USB-I2C Dongle to Windows
GUI
The RA9530 firmware provides great flexibility to customize operating parameters for custom applications.
Default values of the RA9530 operating parameters such as output voltage, FOD parameters, and current limit,
are set in the firmware programmed into the internal electrically erasable programmable (EEPROM) memory.
Based on the end application, the RA9530 operating parameters can be configured by either writing to internal
SRAM registers or program parameter permanently to internal EEPROM memory via the I2C interface.
WPD-USB-DONGLE and USB-FTDI-V2-1 are recommended USB-I2C dongles. Both have same internal
circuitry bit with a different dongle headers. Connect the WPD-USB-DONGLE/ USB-FTDI-V2-1 (USB-Bridge
dongle) to a PC via the USB connector. Attach the Bridge to the I2C terminal J1 dongle on the RA9530-R-EVK
board as shown on Figure 23. The dongle should only be plugged-in in one direction extending away from the
RA9530-R-EVK PCB, and dongle cable black line (ground) should be connected to J1 Pin3 GND.