IDT P9242-R-EVK User Manual

P9242-R-EVK Evaluation Board User Manual

P9242-R Transmitter Evaluation Board Transmitter Coil

P9221-R-EVK

Description

The P9242-R-EVK Mass-Market Evaluation Board demonstrates the features of the P9242-R 15W Wireless Power Transmitter (TX). It is intended to evaluate the functionality and performance of the P9242-R when combined with a power receiver in a wireless charging system. The P9242-R-EVK offers the flexibility to select parameters, such as the over-current limit threshold, LED pattern, and external temperature sensing function. The printed circuit board (PCB) has four layers. The P9242-R Evaluation Board is designed to function with the P9221-R Receiver Evaluation Board, which is ordered separately. It can also be used with the user’s WPC-1.2.2 compliant receiver.

The high-efficiency, turnkey reference design is supported by comprehensive online, digital resources to significantly expedite the design-in effort and enable rapid prototyping. The total active area is optimized to 32mm x 32mm.

Kit Contents

 P9242-R-EVK Mass-Market Evaluation Board  Adaptor: 12V/2A AC

Features

 P9242-R Evaluation Board with support for WPC-1.2.2  Up to 15W output power  Adjustable over-current limit  Adjustable temperature shutdown  Two programmable LED status indicators  Four-layer PCB  Total active area: 1024 mm  Fully assembled with test points and coil fixture

P9242-R-EVK Mass-Market Evaluation Board

P9242-R Transmitter Board Connected to P9221-R-EVK

12V/2A AC Adapter (Not to scale)

P9242-R-EVK Evaluation Board User Manual

Important Notes

Disclaimer

Integrated Device Technology, Inc. and its affiliated companies (herein referred to as “IDT”) shall not be liable for any damages arising out of defects resulting from

(i) delivered hardware or software

(ii) non-observance of instructions contained in this manual and in any other documentation provided to user, or

(iii) misuse, abuse, use under abnormal conditions, or alteration by anyone other than IDT.

TO THE EXTENT PERMITTED BY LAW, IDT HEREBY EXPRESSLY DISCLAIMS AND USER EXPRESSLY WAIVES ANY AND ALL WARRANTIES, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING, WITHOUT LIMITATION, IMPLIED WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE, STATUTORY WARRANTY OF NON-INFRINGEMENT, AND ANY OTHER WARRANTY THAT MAY ARISE BY REASON OF USAGE OF TRADE, CUSTOM, OR COURSE OF DEALING.

Restrictions in Use

IDT’s P9242-R-EVK Mass Market Evaluation Board is designed for evaluation purposes only. It must not be used for module production or production test setups.

Contents

1. Setup ............................................................................................................................................................................................................4

1.1 Required or Recommended User Equipment ......................................................................................................................................4

1.2 Kit Hardware Connections ...................................................................................................................................................................4

2. Usage Guide .................................................................................................................................................................................................5

2.1 Overview of the P9242-R-EVK ............................................................................................................................................................5

2.2 LED Pattern Selection .........................................................................................................................................................................6

2.3 Adjustment of Over-Current Limit ........................................................................................................................................................8

2.4 External Temperature Sensing – TS .................................................................................................................................................10

2.5 Reserved Pins ...................................................................................................................................................................................11

2.6 Transmitter Coil .................................................................................................................................................................................11

3. Schematics, Bill of Materials (BOM), and Board Layout .............................................................................................................................12

3.1 P9242-R Evaluation Board Schematics.............................................................................................................................................12

4. Bill of Materials (BOM) ................................................................................................................................................................................13

5. Board Layout ..............................................................................................................................................................................................16

6. Ordering Information ...................................................................................................................................................................................21

7. Revision History ..........................................................................................................................................................................................21

P9242-R-EVK Evaluation Board User Manual

List of Figures

Figure 1. Evaluation Kit Connections using the P9221-R Receiver Evaluation Board .......................................................................................4

Figure 2. P9242-R V2.1 Evaluation Board Features...........................................................................................................................................5

Figure 3. P9242-R V2.1 Evaluation Board Details ..............................................................................................................................................5

Figure 4. R43 and R44 Schematic Location .......................................................................................................................................................7

Figure 5. R33 and R34 PCB Location ................................................................................................................................................................7

Figure 6. Over-Current Limit vs. V

Figure 7. R48 and R40 Schematic Location .......................................................................................................................................................9

Figure 8. R48 and R40 PCB Location ................................................................................................................................................................9

Figure 9. RTH1 and R20 Schematic Location ..................................................................................................................................................10

Figure 10. RTH1 and R20 R40 PCB Location ....................................................................................................................................................10

Figure 11. Silkscreen – Top of Board .................................................................................................................................................................16

Figure 12. Copper – Top Layer ...........................................................................................................................................................................17

Figure 13. Copper L1 Layer ................................................................................................................................................................................18

Figure 14. Copper L2 Layer ................................................................................................................................................................................19

Figure 15. Copper Bottom ..................................................................................................................................................................................20

.................................................................................................................................................................8

ILIM

List of Tables

Table 1. Selecting the LED Pattern ...................................................................................................................................................................6

Table 2. Recommend Coil Manufacturer .........................................................................................................................................................11

Table 3. P9242-R-EVK BOM ...........................................................................................................................................................................13

P9242-R-EVK Evaluation Board User Manual

P9242-R Transmitter Evaluation Board Transmitter Coil

P9221-R-EVK

Green LEDs illuminate when connection has been established.

1. Setup

1.1 Required or Recommended User Equipment

The following additional lab equipment is required for using the kit:

 P9221-R-EVK Receiver Evaluation Board or any WPC-1.2.2 compliant receiver  Power supply or 12V/2A AC adaptor

1.2 Kit Hardware Connections

Follow these procedures to set up the kit as shown in Figure 1.

1. Set up the P9242-R Evaluation Board: Plug the 12V adapter or user’s power supply into the J3 (barrel connector on the bottom of the

board) or J1 (micro USB connector).

2. Place the P9221-R-EVK or the user’s receiver on the transmitter (TX) pad with the components facing up as shown in Figure 1.

3. Verify that the two green LEDs identified in Figure 1 are illuminated indicating that coupling has been established.

4. If using the P9221-R-EVK Evaluation Board as the receiver, connect wires to the VOUT and GND test points on the P9221-R-EVK

receiver to measure the output voltage and apply a load.

Figure 1. Evaluation Kit Connections using the P9221-R Receiver Evaluation Board

P9242-R-EVK Evaluation Board User Manual

P9242-R Main IC

Buzzer

LED1 and LED2 Pattern Indicators

Vin Power Connector: Micro-USB

Vin Power Connector: Barrel Tx Coil

J2 IDT-Reserved Connector J5 IDT-Reserved Connector – Do Not Use

Unpopulated Thermistor RTH1 for Detecting External Temperature

LED Pattern Selection

Resistors R44 and R43

VCC5V, L1, and Cout

LC Tank Capacitors

Vin Decoupling Capacitors

Tx Coil Driver External Power FETs: Q1 and Q4

Coil Current Communication Demodulation

Iin Sense Resistor

Vin Selector

Coil Voltage Communication Demodulation

Q Measurement – FOD Detection

Tx Coil Driver External Power FETs: Q2 and Q3

LDO33 Cout

Current Limiting Resistors R40 and R48

TS Pin Threshold Selection: R20

2. Usage Guide

2.1 Overview of the P9242-R-EVK

Figure 2. P9242-R V2.1 Evaluation Board Features

Figure 3. P9242-R V2.1 Evaluation Board Details

P9242-R-EVK Evaluation Board User Manual

Option

Voltage on LED_PAT Pin

LED1/LED2 Pin

Status

Standby

Transfer

Complete

Fault

Pull-Down or 0.075V

LED1 – GREEN

Off

LED2 – RED

Off

Blink 4Hz

0.225V

LED1 – GREEN

Off

LED2 – RED

Off

Blink 4Hz

0.375V

LED1 – GREEN

Off

Blink 1Hz

Blink 4Hz

LED2 – RED

Off

0.525V

LED1 – GREEN

Off

Blink 4Hz

LED2 – RED

Off

0.675V

LED1 – GREEN

Blink 1Hz

Off

LED2 – RED

Off

Blink 4Hz

0.825V

LED1 – GREEN

Off

LED2 – RED

Off

Blink 4Hz

0.975V or Pull-Up

LED1 – GREEN

Off

Blink 1Hz

Off

LED2 – RED

Off

Blink 4Hz

2.2 LED Pattern Selection

The P9242-R-EVK uses two LEDs (LED1 and LED2; see Figure 2) to indicate the power transfer status, faults, and operating modes. The LEDs are connected to the LED1 and LED2 pins as shown on P9242-R-EVK schematics (see section 3.1). The LED patterns can be selected by setting the voltage on the LED_PAT pin through the resistor divider R43 and R44; see Table 1 for the options. On the evaluation board the LED_PAT pin is pulled up to 3.3V through R43. R44 is unpopulated; therefore, option 7 is the default option.

Table 1. Selecting the LED Pattern

P9242-R-EVK Evaluation Board User Manual

Figure 4. R43 and R44 Schematic Location

Figure 5. R33 and R34 PCB Location

+ 15 hidden pages

IDT P9242-R-EVK User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual