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Wireless Power

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  • Forum Post: Re: WPC BQ500110 chip

    Vladimir Muratov
    Hello Janez, Thank you for showing interest in the BQ500110. The part can be used in other wireless power applications. You will still need using the commands defined by WPC standard to make your solution working. The operating frequency range will be limited to 110kHz--205kHz. The WPC 1.0 Part 1...
    on May 16, 2011

  • Forum Post: Re: WPC BQ500110 chip

    Vladimir Muratov
    Hello Janez, Frequency is not arbitrary set by the controller. Frequency is function of load and coupling between coils. There is no other means to change the frequency. By varying the frequency the output voltage gets regulated. The part is made to support the WPC spec that sets frequency...
    on May 27, 2011

  • Forum Post: General Qs from customers regarding BQTesla 150 solution

    Daniel Siroky
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 ...
    on Jun 2, 2011

  • 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: Qi versus non-Qi

    Jeff Powels
    As already mentioned in another topic we are distributor for GETPOWERPAD in the EU and they recently announced to integrate the Qi technology in their wireless chargers, but to us the technological advantage of QI is not clear. Could someone clearly explain the advantage so that we can communicate this...
    on Jun 14, 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: My client would like to know if there are any future plans to offer comms over the wireless power link.

    Vladimir Muratov
    Hello Chad, The WPC communication protocol has provisions for propriatary packets that can be used to pass limited user information from the receiver to transmitter. What would be needed to have controllers on both sides of the wireless link capable interfacing these information. These are not...
    on Aug 10, 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: 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: Re: charging through a non-ferrous medium

    Vladimir Muratov
    Hello Kyle, You will find very little difference in efficiency if you use dielectric materials. Efficiency will degrade slightly when distance between coils increases. The WPC technology is not intended to cover distance substantially higher than 5mm. Any conductors or ferrous materials will...
    on Sep 26, 2011

  • Forum Post: BQ51013 - PCB coil

    Ido Baruch
    Hello, I want to insert the coil circuit as one of the layers of the PCB is it possible? What is the minimum inductance of the coil (for 100 - 200mA ) ? Can I get examples of these coils ? Thank you, Ido
    on Nov 20, 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: Smallest coil possible

    Marc Davis-Marsh
    I phoned a friend. Here was his response in RED . The receiver device can have a coil of only 8mm diameter, but it can be quite long in a cylindrical-length direction. The transmitter coil can be concentrically located around the outside receiver's coil, as in inserting into a tube, (if...
    on Apr 4, 2012

  • Forum Post: RE: Coil designer for bq?

    Jaden Ghylin102047
    Bill, can you provide a contact for a 3rd party that can help with these types of coil designs? -Jaden
    on Jan 8, 2013

  • Forum Post: Smallest coil for bq5105X?

    Glenn Zelniker
    Does anyone know if there are any off-the-shelf coils that would work with the bq5105X and that would fit into a 35mmx35mm area? Thickness isn't a big constraint, but floorplan certainly is. I can live with low efficiency and furthermore, the device in question only uses the bq part for charging...
    on Feb 23, 2013

  • 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: RE: BQ51050B Enquiry

    RVG
    Hi Tahar, Pls help me to understand the below 2 mathematics. How does the values highlighted relates to the formula above? So the V10c refers to VT2. What does the VTS 40% -50% means? What does the %VTSB means? I know the IQ @ 4.2V is within specification. Any advise on the IQ @ 3.6V = 26uA?...
    on Mar 18, 2013

  • Forum Post: Is a QI transmitter with constant frequency available?

    Rudolf Aufmkolk
    I'm testing the application of QI trnamitter for automotive. The most car manufacturer have at 125 kHz a communication channel for the keyless entry, - go, etc. With operation of the fundamental frequency in the range of 100 till 150 kHz is an aproval from a vehicle OEM not possible. Has TI a solution...
    on Jun 4, 2013

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