Renesas P9415-R-EVK User manual

User Guide
P9415
-R-EVK Evaluation Kit
R16UH0015EU0100 Rev.1.0
May 27, 2021
Page 1
© 2021 Renesas Electronics
The P9415-R-EVK Wireless Power Evaluation Board serves to demonstrate the features and performance of the
9415-R 15W Wireless Power Receiver with WattShare™ mode. The P9415-R-EVK is designed for evaluation
purpose only. It must not be used for module or mass production purposes.
Contents
1. Features.........................................................................................................................................................3
2. Evaluation Kit Contents ...............................................................................................................................3
3. Overview........................................................................................................................................................3
4. Setup..............................................................................................................................................................4
4.1 Required or Recommended User Equipment.......................................................................................4
4.2 Required Software on Computer..........................................................................................................4
4.2.1. Software Installation...............................................................................................................4
4.3 Usage Guide.........................................................................................................................................5
4.4 Kit Hardware Connections for Rx Mode................................................................................................5
4.4.1. Start Guide for Rx Operation..................................................................................................5
4.5 Kit Hardware Connections for Wattshare (Tx) mode ............................................................................6
4.5.1. Start Guide for Wattshare Tx mode Operation.......................................................................6
4.5.2. WattshareTM Tx Mode Input Voltage.......................................................................................8
5. P9415-R Evaluation Board Test Point and Connector...............................................................................8
5.1 P9415-R Evaluation Board Test Point Placement................................................................................8
5.1.1. J1 Dongle Connector Pin Descriptions...................................................................................8
5.1.2. J5 Test Connector Pin Descriptions.......................................................................................9
6. Hardware Connections–Renesas USB-I2C Dongle to Window GUI.........................................................9
6.1 Using the Windows GUI......................................................................................................................12
7. TRx Wireless Power Coil............................................................................................................................15
8. Resonance Capacitors...............................................................................................................................15
9. PCLAMP Connection..................................................................................................................................15
10. Transient Voltage Suppressors.................................................................................................................15
11. GPIO and GPOD Pins.................................................................................................................................16
11.1 OD0/SCL Pin......................................................................................................................................16
11.2 OD1/SDA Pin......................................................................................................................................16
11.3 OD2/INT Pin.......................................................................................................................................16
11.4 OD3/ALIGN_X Pin and OD4/ALIGN_Y Pin........................................................................................16
11.5 GP0/PWRGD Pin ...............................................................................................................................17
11.6 GP1/Q Main Pin and GP3/Q Offset Pin..............................................................................................17
11.7 GP2/ External Thermistor Pin.............................................................................................................18
11.8 GP4/I2C Address Select Pin...............................................................................................................18
11.9 GP5/INHIBIT Pin ................................................................................................................................18

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11.10 GP6/EPP_DISABLE Pin.....................................................................................................................18
12. Foreign Object Detection...........................................................................................................................18
12.1 FOD Parameters in Receiver Mode....................................................................................................19
12.2 FOD Parameters in Transmitter Mode................................................................................................20
13. I2C Function................................................................................................................................................20
14. P9415-R TRX Demo PCB v1.1 Schematic.................................................................................................21
15. Bill of Materials (P9415-R-EVK Demo Board Rev1.1) ..............................................................................22
16. P9415-R-EVK PCB Layout..........................................................................................................................23
17. Ordering Information..................................................................................................................................25
18. Revision History .........................................................................................................................................25
Appendix A–List of Registers............................................................................................................................26
Bi-di Communication Registers ....................................................................................................................40
Appendix B–Wireless Power Coil Key Specifications from Luxshare (ICTR-QS5858031L-MW034)...........42

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1. Features
■Receives up to 15W of power from Qi Extended Power Profile (EPP) Transmitter
■Transmits up to 5W of power in WattShare™ (TRx) mode
■WPC1.2.4 Extended Power Profile (15W) compatible
■WPC 1.3 Specification hardware ready
■Up to 87% system efficiency in Receiver mode
■Uses thin profile receiver coil (0.3mm)
■Score line to break the applications circuit for prototyping
■Easy configuration of design parameters using P9415-R Windows GUI
■Connector compatible with “WPD-USB-DONGLE” USB to I2C dongle
■4-layer PCB with 1 oz. copper
■Extensive support collateral: Schematics, Layout files, BOM
■Supports Bi-Directional communications
■X-Y alignment coils embedded in the PCB
■Embedded 32-bit ARM® Cortex®-M0 processor
■Supports I2C 400kHz standard interface and GPIOs
2. Evaluation Kit Contents
■P9415-R Evaluation Board assembled with Coil
3. Overview
The P9415-R-EVK Wireless Power Evaluation Board serves to demonstrate the features and performance of the
9415-R 15W Wireless Power Receiver with WattShare™ mode. Renesas P9243-GB-EVK Evaluation Board or
any other Qi certified Extended Power Profile (EPP) transmitter can be used as the power transmitter for P9415-
R-EVK Evaluation Board testing.
The P9415-R-EVK demonstrates a high-efficiency, turnkey reference design supported by comprehensive
online, digital resources to significantly expedite design-in effort and enable rapid prototyping.
Using the P9415-R Windows GUI customers can quickly customize operating parameters for their custom
applications. Operating parameters such as foreign object detection (FOD) parameters can be configured by
either writing to internal SRAM registers via the I2C interface, or by loading a custom configuration generated by
the P9415-R Windows GUI into The P9415-R features Multiple-time programmable (MTP) non-volatile memory.
WPD-USB-DONGLE is required to connect P9415-R-EVK with the windows GUI and needs to be ordered
separately.

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4. Setup
4.1 Required or Recommended User Equipment
The following additional lab equipment is required for using the kit:
■P9243-GB-EVK Evaluation Board or any WPC certified transmitter for Rx mode test
■DC power source or travel adapter to power P9243-GB-EVK Evaluation Board or any WPC certified
transmitter
■P9222-R-EVK or any WPC certified receiver for Watt-share (Tx) mode test
■Electronic load that can be connected to P9415-R-EVK
■WPD-USB-DONGLE for connecting with P9415-R Wireless Power Pro GUI on computer and doing I2C
transactions. WPD-USB- DONGLE is not shipped along with evaluation board and needs to be ordered
separately
4.2 Required Software on Computer
Visit the P9415-R-EVK webpage and download latest version of the P9415-R Wireless Power Pro GUI, and USB
drivers from the Renesas website. The Window GUI software provides an intuitive graphical user interface for
reading and writing to P9415-R registers and program custom user configurations to internal MTP memory.
4.2.1. Software Installation
Follow these procedures to install the software:
1. Do not connect the WPD-USB-DONGLE before installing the software.
2. Run the downloaded USB Drivers Setup executable file and follow the user prompts to install the USB
drivers.
3. After finishing the setup of the USB drivers, connect one of the WPD-USB-DONGLE to the USB port. Wait
for a few moments to let Windows® map the drivers for the dongle.
4. 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 Figure 1.
5. Run the P9415-R Window GUI exe file.
Figure 1. Windows Device Manager Display for the USB Connection

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4.3 Usage Guide
The P9415-R Evaluation board allows for demonstration of the performance and functionality of the P9415-R
device in a lab bench test environment. For complex or electrically sensitive situations, it is recommended to use
the reference layout to integrate this design into the final system to eliminate hardware limitations or signal
degradation introduced by long leads.
4.4 Kit Hardware Connections for Rx Mode
Follow these procedures to set up the kit as shown in Figure 2.
1. Set up the P9243-GB Evaluation Board (or other transmitter board) according to the board’s user manual
and apply power.
2. Place the P9415-R-EVK Board on the transmitter coil surface with the coil back facing upwards. P9415-R-
EVK PCB boards act as a spacer between Tx surface and Rx coil.
3. Verify that the green LEDs on both kits are illuminated, indicating that power transfer has been established.
Figure 2. Evaluation Kit Connections for Rx Mode Test (1)
4.4.1. Start Guide for Rx Operation
Place the bottom side of P9415-R EVK onto P9243-GB Tx or other WPC certified Tx unit. P9415-R EVK
includes a 58 × 58 × 0.3 mm TRx coil assembly. The charging pad may be a pre-powered and may be powered
after placing the Rx coil on Tx charging pad.
Verify that green LED on P9415-R is illuminating and measure Rx output voltage at the VOUT test point to
ground (GND). Up to 1A load may be connected between VOUT and the GND terminals. 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 utilized when performing
efficiency measurements. The I2C dongle connector J1 can be used to interface with WPD-USB-DONGLE
dongle for programming the user configurable design parameters and it can be used to monitor the system
status, mode, operating frequency, voltage and current.

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4.5 Kit Hardware Connections for Wattshare (Tx) mode
Follow these procedures to set up the kit as shown in Figure 3.
1. Supply power on P9415-R-EVK VOUT with DC power supply (7.0V).
2. Connect USB dongle on P9415-R-EVK J1 connector. USB dongle black line (GND) should be on J1 Pin3.
3. Send Tx mode command with P9415-R Wireless Power Pro GUI (write 0x01 on 0x0076 register).
4. Place the P9222-R-EVK Board or WPC certified receiver on the reverse side of P9415-R-EVK.
P9415-R-EVK PCB boards acts as a spacer between Tx surface and Rx coil.
5. Verify that the green LEDs on P9222-R-EVK is illuminated, which indicates that power transfer has been
established.
Figure 3. Evaluation Kit Connections for Rx Mode Test (2)
4.5.1. Start Guide for Wattshare Tx mode Operation
The P9415-R-EVK 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 P9415-R-
EVK 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.
Ensure that P9415-R-EVK is not on the Tx pad to avoid Tx conflict.
1. Supply power (5V – 9V) on P9415-R-EVK VOUT or Tx VIN Test point.
2. Write 0x0001 data to 0x0076 register to enable TRx mode with Renesas GUI or any other I2C tool.
3. P9415-R-EVK starts sending digital pings after enabling TRx mode. Probe AC1 and check digital ping
waveform.

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Figure 4. TRx Mode Digital Ping Waveform
4. Place WPC compliant Receiver on P9415-R-EVK TRx coil. P9415-R will detect Rx device and start power
transfer right after WPC ID and Configuration packet.
Probe Rx VRECT and Rx VOUT and check if charging is functional.
Figure 5. TRx Mode Rx Charging Waveform
5. TRx default digital ping frequency is 145kHz and the normal operating frequency range is from 130kHz to
145kHz in the default configuration. It can be changed to 110kHz – 148kHz using the P9415-R GUI.

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4.5.2. WattshareTM Tx Mode Input Voltage
The P9415-R 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, wearables and hearables. The maximum power
delivered in TRx mode is dependent on the input voltage on 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 7V to 9V to deliver 5W of power to the receiver.
5. P9415-R Evaluation Board Test Point and Connector
There are many test points placed around P9415-R EVK PCB board that can be used for quick and easy
evaluation of P9415-R performance. VOUT, VRECT and GND have large size test points for easy test cable
connection for supplying power and loading. J1 and J5 are the pin type connector for USB-I2C bridge dongle
interface connection and system configuration and monitoring.
5.1 P9415-R Evaluation Board Test Point Placement
Figure 6. Evaluation Board Test Point Placement
5.1.1. J1 Dongle Connector Pin Descriptions
Table 1. J1 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
VDONGLE
Power
Dongle power supply from USB Dongle cable (optional).
5
OD2_INT
Output
Interrupt Signal from P9415-R. Connect OD2_INT to AP GPIO with PU (optional).

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5.1.2. J5 Test Connector Pin Descriptions
Table 2. J5 Test Connector Pin Descriptions
Pin
Number
Name
Type
Description
1
INHIBIT
Input
Software Enable Pin, active High.
2
LDO1P8
Power
Internal power regulator 1.8V.
3
GP6
Input
EPP disable, High = EPP disable, Low = EPP enable.
4
PGOOD
Output
Power Good indication output.
5
VRECT
Power
VRECT power supply from USB dongle (optional).
6
VDONGLE
Power
Dongle power supply from USB dongle (optional).
6. Hardware Connections–Renesas USB-I2C Dongle to Window
GUI
The P9415-R firmware provides great flexibility to customize operating parameters for custom applications.
Default values of the P9415-R operating parameters such as output voltage, FOD parameters, and current limit
are set in the firmware programmed into the internal multi-time programmable (MTP) memory. Based on the end
application, the P9415-R operating parameters can be configured by either writing to internal SRAM registers or
program parameter permanently to internal MTP memory via the I2C interface.
Connect the USB-Bridge dongle to PC via USB connector. Attach the Bridge to the I2C terminal J1 dongle on
the P9415-R EVK DEMO board as shown on Figure 8. The dongle should only be plugged-in in one direction,
extending away from the P9415-R EVK PCB, and dongle cable black line (ground) should be connected in J1
Pin3 GND.
Blank
SCL
SDA
GND
Figure 7. USB to I2C Dongle Header of “USB-FTDI-V2-1” (FTDI) Dongle

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SDA
SCL
GND
Figure 8. USB to I2C Dongle Header of “WPD-USB-DONGLE”
Figure 9. USB-I2C Bridge Connected to I2C Terminal J1 of P9415-R EVK Demo Board; USB Cable
To access the device, connect USB-Bridge dongle to P9415-R as shown in Figure 8 and follow below
procedures.
1. Ensure the USB drivers and P9415-R Wireless Power Pro GUI tool are installed successfully in PC.
2. Place P9415-R-EVK on WPC TX or apply 5V DC from GND connection to the VOUT test point without Tx.
3. Connect WPD-USB-DONGLE to J1 of P9415-R-EVK.
4. Open GUI program. Initial GUI screen is in Figure 9 and the user is prompted to select I2C address.
5. P9415-R default I2C address is 0x3B. Click connect button. If dongle connection is made successfully,
P9415 will be displayed in GUI as shown in Figure 10.
6. If P9415 is not displayed in GUI, check if P9415-R-EVK is powered on properly and plug USB cable again.