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bq51050BEVM-764, Integrated Wireless Power Li-Ion
The bq51050BEVM (HPA764-002) wireless power receiver evaluation kit from TI is a high-performance,
easy-to-use development kit for the design of wireless power solutions. It helps designers to evaluate the
operation and performance of the bq51050B (WCSP package), a direct Li-Ion charge controller for
wireless power transfer. The bq51050B device provides the AC/DC power conversion, integrates the
digital controller required to comply with the Qi v1.1 communication protocol, and Li-Ion charge controller.
The kit speeds up the development of end-use applications.
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Start-Up to Fast-Charge Mode
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Start-Up to Pre-charge Mode
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Pre-charge to Fast-Charge Transition
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Fast Charge to Taper and Termination Transition
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bqTESLA is a trademark of Texas Instruments, Inc..
SLUUA25C - October 2012 - Revised June 2013
Submit Documentation Feedback
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bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver
Copyright © 2012-2013, Texas Instruments Incorporated
SLUUA25C - October 2012 - Revised June 2013
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User's Guide
Charger Receiver
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Summary of Contents for Texas Instruments bq51050BEVM-764
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Page 1: Table Of Contents
Fast Charge to Taper and Termination Transition ............Efficiency Versus Output Power (AC Input to DC Output) bqTESLA is a trademark of Texas Instruments, Inc.. SLUUA25C – October 2012 – Revised June 2013 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver Submit Documentation Feedback Copyright ©... -
Page 2: Contents 1 Introduction
Considerations with this EVM The bq51050BEVM-764 evaluation module (HPA764-002) demonstrates the receiver portion of the bqTESLA™ wireless power system. This receiver EVM is a complete receiver-side solution that charges single-cell Li-Ion batteries with up to 1-A charge current. -
Page 3: Recommended Operation Condition
Recommended Operation Condition www.ti.com Recommended Operation Condition Table 1 provides a summary of the bq51050BEVM-764 performance specifications. All specifications are given for an ambient temperature of 25°C. Table 1. bq51050BEVM-764 Electrical Performance Specifications PARAMETER TEST CONDITION UNIT Input voltage range 10.0... -
Page 4: Connector And Test Point Descriptions
R16. Test Point Descriptions The test points are described in the following paragraphs. bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C – October 2012 – Revised June 2013 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... - Page 5 TP17 – FET Open Detection (FOD) Input for rectified power measurement, pin F2 of the IC. FOD for the bq51050B. SLUUA25C – October 2012 – Revised June 2013 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated...
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Page 6: Pin Description Of The Ic
JPx (-YY-) ON: Internal jumper Jxx adjacent terminals marked as YY are shorted. Assembly drawings have location for jumpers, test points, and individual components. bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C – October 2012 – Revised June 2013 Submit Documentation Feedback... -
Page 7: Recommended Test Equipment
Adjust PS#2 to approximately 3.6 V and 3.5-A current limit to the input side (PS #2+/–) of the battery emulator (Figure 3), then turn PS #2 off. SLUUA25C – October 2012 – Revised June 2013 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 8: Battery Emulator
±200-Ω reading on the ohmmeter. (This adjusts termination current to around 20% of fast charge current, for 1-A fast charge current, termination current should be 200 mA). Make sure JP5 → Shorted. bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C – October 2012 – Revised June 2013 Submit Documentation Feedback Copyright ©... -
Page 9: Procedure
Verify that input current to TX is less than 350 mA ±30 mA with input voltage at 19 V SLUUA25C – October 2012 – Revised June 2013 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 10: Test Results
5 V/div TP12-V-RECT 5 V/div I-BAT 1 A/div 200 ms/div Figure 5. Start-Up to Pre-charge Mode bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C – October 2012 – Revised June 2013 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 11: Pre-Charge To Fast-Charge Transition
5 V/div I-BAT 1 A/div 1 s/div Figure 7. Fast Charge to Taper and Termination Transition SLUUA25C – October 2012 – Revised June 2013 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 12: Efficiency Data
Efficiency Versus Output Power (AC-DC) Figure 8 illustrates the efficiency of the bq51050BEVM-764 during the full charge cycle. The regulation voltage is 4.2 V, fast charge current is set to 1 A, and termination is set to 100 mA. bq51050B 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50... -
Page 13: Thermal Performance
Thermal Performance This section shows a thermal image of the bq51050BEVM-764 in fast-charge mode. A 4.0-V battery is used at a charging rate of 1000 mA. There is no air flow and the ambient temperature is 25°C. The peak temperature of the IC (57.5°C) is well below the maximum recommended operating condition listed in the... -
Page 14: Layout And Bill Of Material
It is always a good practice to place high-frequency bypass capacitors of 0.1 μF next to RECT and OUT. Figure 11 illustrates an example of a WCSP layout: bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C – October 2012 – Revised June 2013 Submit Documentation Feedback... -
Page 15: Bq51050Bevm Layout Example
Layout and Bill of Material www.ti.com Figure 11. bq51050BEVM Layout Example SLUUA25C – October 2012 – Revised June 2013 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 16: Bq51050Bevm-764 Top Assembly
Layout and Bill of Material www.ti.com 8.1.2 Layout Figure 12. bq51050BEVM-764 Top Assembly bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C – October 2012 – Revised June 2013 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 17: Bq51050Bevm-764 Top Layer
Layout and Bill of Material www.ti.com Figure 13. bq51050BEVM-764 Top Layer SLUUA25C – October 2012 – Revised June 2013 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 18: Bq51050Bevm-764 Bottom Copper Layer
Layout and Bill of Material www.ti.com Figure 14. bq51050BEVM-764 Bottom Copper Layer bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C – October 2012 – Revised June 2013 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 19: Bq51050Bevm-764 Bottom Assembly
Layout and Bill of Material www.ti.com Figure 15. bq51050BEVM-764 Bottom Assembly SLUUA25C – October 2012 – Revised June 2013 bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated... -
Page 20: Bill Of Materials (Bom)
6. Used to secure RX coil to case. Cut tape section from 36 yard roll identified in part number field. 7. Install PCB in case using provided screws. 8. For 20 V input application, consider using 8 V VGS FETs bq51050BEVM-764, Integrated Wireless Power Li-Ion Charger Receiver SLUUA25C – October 2012 – Revised June 2013 Submit Documentation Feedback... - Page 21 Any exceptions to this are strictly prohibited and unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory authorities, which is responsibility of user including its acceptable authorization.
- Page 22 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.
- Page 23 Also, please do not transfer this product, unless you give the same notice above to the transferee. Please note that if you could not follow the instructions above, you will be subject to penalties of Radio Law of Japan. Texas Instruments Japan Limited (address) 24-1, Nishi-Shinjuku 6 chome, Shinjuku-ku, Tokyo, Japan http://www.tij.co.jp...
- Page 24 FDA Class III or similar classification, then you must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2013, Texas Instruments Incorporated...
- Page 25 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.
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