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User's Guide

SLVU928A–September 2013–Revised October 2013

bq500212A bqTESLA Wireless Power TX EVM

The bqTESLA™ wireless power transmitter evaluation module from Texas Instruments is a high-

performance, easy-to-use development module for the design of wireless power solutions. The single-

channel transmitter enables designers to speed the development of their end-applications. The

bq500212A EVM evaluation module (EVM) provides all the basic functions of a Qi-compliant, wireless

charger pad. The EVM is intended to be used with bq51013BEVM-764 or any other Qi-compliant receiver.

The EVM supports both the WPC 1.0 and WPC 1.1 receivers. The transmitter EVM is a 5-V input design

which powers a standard WPC low-power 5-W receiver.

Contents

1 Applications .................................................................................................................. 2

2 bq500212AEVM-550 Electrical Performance Specifications .......................................................... 2

3 Modifications ................................................................................................................. 2

4 Connector and Test Point Descriptions .................................................................................. 3

4.1 Input/Output Connections ......................................................................................... 3

4.2 Test Point Descriptions ............................................................................................ 4

5 Schematic and Bill of Materials ........................................................................................... 6

6 Test Setup .................................................................................................................. 11

6.1 Equipment ......................................................................................................... 11

6.2 Equipment Setup ................................................................................................. 12

7 bq500212AEVM-550 Assembly Drawings and Layout ............................................................... 14

8 Reference ................................................................................................................... 17

9 FCC and IC Regulatory Compliance .................................................................................... 18

List of Figures

1 bq500212AEVM-550 Schematic, Page 1 of 3 .......................................................................... 6

2 bq500212AEVM-550 Schematic, Page 2 of 3 .......................................................................... 7

3 bq500212AEVM-550 Schematic, Page 3 of 3 .......................................................................... 8

4 Equipment Setup .......................................................................................................... 12

5 Efficiency versus Power, bq500212AEVM-550 Transmitter and HPA764 Receiver.............................. 13

6 Assembly Top.............................................................................................................. 15

7 Top Silk ..................................................................................................................... 15

8 Top Layer................................................................................................................... 16

9 Layer 2...................................................................................................................... 16

10 Layer 3...................................................................................................................... 17

11 Bottom Layer............................................................................................................... 17

List of Tables

1 bq500212AEVM-550 Electrical Performance Specifications .......................................................... 2

2 Bill of Materials .............................................................................................................. 8

bqTESLA, Dynamic Power Limiting are trademarks of Texas Instruments.

Avid is a registered trademark of Avid Technology, Inc..

SLVU928A–September 2013–Revised October 2013 bq500212A bqTESLA Wireless Power TX EVM

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Summary of content (23 pages)

PAGE 1
User's Guide SLVU928A – September 2013 – Revised October 2013 bq500212A bqTESLA Wireless Power TX EVM The bqTESLA™ wireless power transmitter evaluation module from Texas Instruments is a highperformance, easy-to-use development module for the design of wireless power solutions. The singlechannel transmitter enables designers to speed the development of their end-applications. The bq500212A EVM evaluation module (EVM) provides all the basic functions of a Qi-compliant, wireless charger pad.
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Applications 1 www.ti.com Applications The bq500212AEVM-550 evaluation module demonstrates the transmitter portion of the bqTESLA™ wireless power system. This transmitter EVM is a complete transmitter-side solution that powers a bqTESLA™ receiver. The EVM requires a single 5-V power supply capable of up to 2 A to operate and combines the transmitter electronics, input power socket, LED indicators, and the transmitting coil on the single printed-circuit board (PCB).
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Connector and Test Point Descriptions www.ti.com 4 Connector and Test Point Descriptions 4.1 Input/Output Connections The connection points are described in Section 4.1.1 through Section 4.1.8. 4.1.1 J1 – VIN Input power 5 V ±100 mV, return at J2. 4.1.2 J2 – GND Return for input power, input at J1. 4.1.3 J3 –JTAG Factory use only. 4.1.4 J4 – Serial Interface Factory use only. 4.1.5 J5 - Micro USB Input power connector. 4.1.
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Connector and Test Point Descriptions 4.2 www.ti.com Test Point Descriptions The test points are described in Section 4.2.1 through Section 4.2.20. 4.2.1 TP1 – Coil Monitor L / C Coil signal at junction between coil and capacitors. 4.2.2 TP2 – DPWM Signal Digital output signal from bq500212A to H-Bridge drive for U3. 4.2.3 TP3 – DPWM Signal Digital output signal from bq500212A to H-Bridge drive for U2. 4.2.4 TP4 – Analog GND Low-noise GND 4.2.5 TP5 – Not Used Not used. 4.2.
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Connector and Test Point Descriptions www.ti.com 4.2.15 TP15 – Not Used Not used. 4.2.16 TP16 – Not Used Not used. 4.2.17 TP17 – Not Used Not used. 4.2.18 TP18 – Spare Pin Unused output from bq500212A. 4.2.19 TP19 – I_Sense Input current-sense voltage, scale 1 V = 1 A. 4.2.20 TP20 -- Sleep Output from bq212A, U1 starts Sleep timer circuit.
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Schematic and Bill of Materials 5 www.ti.com Schematic and Bill of Materials This section includes the schematics and bill of materials for the EVM. Figure 1 through Figure 3 illustrate the schematics for this EVM. U5 TLV70033DDC VIN 5 Vin J5 VIN 1 DC IN R13 0 2 2 L3 J1 C17 4.7uF C2 4.7uF 1 R4 1.0k R20 0 DC IN AGND 2 R55 1.0k C34 1.0uF R54 523k 7 6 1 1 R53 2.0MEG 3 TP9 OUT 3V3_VCC 5 GND EN NC 3V3_VCC C25 4.7uF 4 D8 BAT54 AGND R25 523k D1 BLU AGND C26 4.
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Schematic and Bill of Materials www.ti.com SNOOZE_CHG SNOOZE_CHG SNOOZE_CAP R33 475 Temp Sensor 3V3_ADC R19 10.0k C24 4.7nF R9 10K 3V3_VCC C5 4.7uF R8 10k VIN VIN PWR_UP R10 76.
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Schematic and Bill of Materials www.ti.com 1 TCK TDO TDI /TRST TMS 14 13 12 11 10 9 8 7 6 5 4 3 2 1 TCK AGND TDO TDI /TRST TMS CLK CLK AGND DATA DATA 1 2 3 4 5 6 7 8 9 10 J4 N2510-6002-RB J3 R21 R31 R35 R38 R49 R39 R42 1 1 1 1 1 1 1 3V3_VCC 1 3V3_VCC Parts with no values are not installed Figure 3. bq500212AEVM-550 Schematic, Page 3 of 3 Table 2 contains the BOM for this EVM. Table 2.
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Schematic and Bill of Materials www.ti.com Table 2. Bill of Materials (continued) Designator Qty Description Manufacturer Part Number C30 1 CAP CER 0.1UF 50V 10% NP0 1210 TDK Corporation C3225C0G1H104K250AA Alternate Manufacturer Alternate PartNumber C32 1 Capacitor, Ceramic Chip, 100UF 6.3V 20% X5R 1206 TDK D1 1 Diode. LED 2X1.
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Schematic and Bill of Materials www.ti.com Table 2. Bill of Materials (continued) Designator Qty Description Manufacturer Part Number Alternate Manufacturer U5 1 IC REG LDO 3.
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Test Setup www.ti.com 6 Test Setup 6.1 Equipment 6.1.1 bqTESLA™ Receiver Use the bq51013BEVM-764 or a Qi-compliant receiver to work with this EVM. 6.1.2 Voltage Source The input voltage source must provide a regulated DC voltage of 5 V and deliver at least 2-A continuous load current; current limit must be set to 3 A.
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Test Setup 6.2 www.ti.com Equipment Setup • • • 6.2.1 With the power supply OFF, connect the supply to the bqTESLA™ transmitter. Connect the VIN positive power source to J1, and connect the negative terminal of the VIN source to J2. Do not place the bqTESLA™ receiver on the transmitter. Connect a load to J3 with a return to J4, monitor current through the load with the ammeter, and monitor the current to the load at TP7. All voltmeters must be Kelvin connected (at the pin) to the point of interest.
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Test Setup www.ti.com 6.2.2.3 Efficiency To measure system efficiency, measure the output voltage, the output current, input voltage, and input current and calculate efficiency as the ratio of the output power to the input power. Connect voltage meters at the input and output of TX and RX (see Figure 4). Average the input current; the comm pulses modulate the input current, distorting the reading. See Figure 5 for efficiency.
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bq500212AEVM-550 Assembly Drawings and Layout 6.2.2.7 www.ti.com Foreign Object Detection The bq500212A EVM incorporated Foreign Object Detection (FOD) call in WPC 1.1. Power loss is calculated by comparing the power sent to the receiver (RX) with the power the RX reported receiving, less know power loss. The transmitter determines the power sent to the RX by measuring input power and calculating internal losses. The RX measures the power it received and also calculates losses.
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bq500212AEVM-550 Assembly Drawings and Layout www.ti.
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bq500212AEVM-550 Assembly Drawings and Layout www.ti.com Figure 8. Top Layer Figure 9.
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Reference www.ti.com Figure 10. Layer 3 Figure 11. Bottom Layer 8 Reference For additional information about the bq500212AEVM-550 low-power, wireless, power evaluation kit from Texas Instruments, visit the product folder on the TI Web site at http://www.ti.
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FCC and IC Regulatory Compliance 9 www.ti.com FCC and IC Regulatory Compliance REGULATORY COMPLIANCE INFORMATION As noted in the EVM User’s Guide and/or EVM itself, this EVM is subject to the Federal Communications Commission (FCC), Industry Canada (IC) and European Union CE Mark rules. FCC – FEDERAL COMMUNICATIONS COMMISSION Part 18 Compliant Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 18 of the FCC Rules.
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EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
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FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
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【Important Notice for Users of EVMs for RF Products in Japan】】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
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EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.