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Qi Wireless charger inductive charger
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  • Forum Post: Re: Basic Interoperability Question: Qi to Qi

    Vladimir Muratov
    Michael, For LG wireless chargers you may check the nearest Verizon store. Verizon offers wireless Qi compliant charging pad and back cover for LG Revolution phone. http://www.verizonwireless.com/b2c/store/accessory?action=accessoryDetails&accessoryId=47587 Best Regards, Vladimir Muratov
    on Jun 10, 2011

  • Forum Post: Basic Interoperability Question: Qi to Qi

    Michael Banak
    First, let me thank you for an exciting and impressive roll-out. 1) The 5W Qi standard is the going trend now, and this is good. But if I designed my own transmitter, (not using your impressive chip), and placed a Qi receiver on it, as long as my design complied with the standard, they *should* work...
    on Jun 9, 2011

  • Forum Post: Re: Total required area for bq25046EVM solution?

    Vladimir Muratov
    Hello Derek, For lower power smaller magnetics possible on Tx and Rx sides. We can discuss the details off line if you provide your contact information. Please respond to me as bellow and we can discuss your application. Best regards, Vladimir Muratov Texas Instruments DC Solutions...
    on Aug 8, 2011

  • Forum Post: Re: BQ500110 coil_pwm problems

    Vladimir Muratov
    Hello Dean, All your observations are correct. The 0.4s repetition rate you observing is the right number. The WPC spec requires detection of the receiving devise in no more than 0.5s. Considering some processing time needed, the 0.4s ping repetiton rate has been implimented in BQ500110. The...
    on Aug 22, 2011

  • Forum Post: Re: BQ500110 coil_pwm problems

    dean k
    Hello Vladimir and thank you very much for your informative response. Now that i know the BQ500110 seems to be switching the coil correctly, I have moved onto debugging the reviever side/communication channels. When I first place my reciever on the transmit coil (there is about 5mm spacer between...
    on Aug 23, 2011

  • Forum Post: Re: BQ500110 coil_pwm problems

    dean k
    Just a follow up on the last post I made: I fixed the errors I had with my demodulator circuit and the receiver is now communicating with the transmitter. The 500110 is no longer indicating faults when i place the receiver coil closer than about 5mm to the transmit coil. The last problem with my...
    on Aug 24, 2011

  • Forum Post: Re: BQ500110 coil_pwm problems

    Vladimir Muratov
    Dean, I glad you reselve most of the issues. Per WPC maximum guranteed distances between coils is 5mm. The distance should be measured from coil to coil. It means that plastic covers in TI bqTesla kit should be included into this 5mm. Can you provide the details how you power bq500110 up. Are...
    on Aug 24, 2011

  • Forum Post: BQ500110 coil_pwm problems

    dean k
    Hello E2E community, I am currently debugging a design based on the BQ500110-EVM and the BQ51013-EVM. When I apply power to the BQ500110 and probe the COIL_PWM pin I do see the three 100kHz pulses except they occur every 0.4 sec instead of 0.5 sec (EVM user guide states it should be 0.5 sec...
    on Aug 22, 2011

  • Forum Post: Re: Qi devices transmission range

    Bill Johns
    Hello Moshe The distance of 12cm is a little far for the present WPC standard. It may be possible to transfer some power but also the receiver has to send commands back to the transmitter through load modulation. If receiver cannot communicate with the transmitter power transfer will stop. The...
    on Feb 9, 2012

  • Forum Post: Re: Wireless Power Consortium Documents

    Bill Johns
    Hello Mike The WPC standard has three parts Part 1: Interface Definition Part 2: Performance Requirements Part 3: Compliance Testing Only Part 1 is available to non WPC members. Yes TI is a WPC member and has access to part 2 and 3. But cannot share this info with non members. ...
    on Feb 16, 2012

  • Forum Post: Re: BQtesla EVM

    Vladimir Muratov
    Hello Alexander, The CoilDis function is used to dump the coil oscillation during Analog Ping. The function is only present in BQ500110 EVM and there is no such function in BQ500210. Making changes to the resistor value will not improve the operating range. There is no provisions in both controllers...
    on Mar 12, 2012

  • Forum Post: RE: BQ51050B Enquiry

    RVG
    Hi Tahar, 1) I couldn't agree more on the Iq of 20uA if the WP is disabled with 4.2V battery. However, what about the Iq at 3.6V? Pls find plot as below. 2) Need your help to advise more on the Vhot and Vcold. What does the V 10c and V 45c means? So if i were to set the Vcold as 10degC, i input...
    on Mar 14, 2013

  • Forum Post: BQ51050B Enquiry

    RVG
    Hi, Need some advise on the BQ51050B, 1) How to we determine the %Vcold and %Vhot? Also, based on the diagram, there is R1, R2, R3 and RNTC. However R2 should be fixed as 20K internally. How does the mathematics involve the R3, RNTC and R2? What about the R1? How to get the R1 and R2 value from the...
    on Feb 6, 2013

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