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DRV8662
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  • Forum Post: DRV8662 EVM

    Eric.Siegel
    Hello, If you'd like to purchase a DRV8662 EVM please click the below link and fill out our quick form. Please be sure to include your business email so we can speedily process your request. DRV8662 Order Form On this form you can also request the Full Users Guide as well as the Full...
    on Jul 22, 2011

  • Forum Post: Re: DRV8662 EVM

    Brian Burk
    Gonzalo, The EVM kit does not include a Piezo actuator at the moment, but we hope to include one soon. Here are a few Piezo actuator vendors: AAC Technologies (recommended) Murata NEC-Tokin Hokuriku Thanks, Brian
    on Jul 25, 2011

  • Forum Post: Design Article- Haptics technology: picking up good vibrations

    Luca
    This technical article was recently posted on EETimes ( http://www.eetimes.com/design/medical-design/4218132/Haptics-technology--picking-up-good-vibrations ) Haptics technology: picking up good vibrations Eric Siegel, Product Marketing Engineer, Texas Instruments 7/24/2011 3:50 PM EDT...
    on Jul 27, 2011

  • Forum Post: Re: Design Article- Haptics technology: picking up good vibrations

    Skip
    Eric - this is an excellent article! When you discuss power efficiencies between ERMs, LRAs, and Piezoelectric Actuators, your article appears to relate only vibrations on mobile handsets or handheld devices. When we have applications of vibrations in the 18-38Hz range using ERMs (and customized LRAs...
    on Aug 1, 2011

  • Forum Post: Re: DRV8662 and actuators

    Brian Burk
    Hey GianLuca, Thanks for your interest in Piezo haptics! Let me see if I can answer your questions. AAC has a series of Piezo actuators with the name MLB3503-G. They come in 3 voltages: Normal 0 false false false EN-US X-NONE X-NONE ...
    on Sep 14, 2011

  • Forum Post: DRV8662 Footprint Size and Gain Steps

    Brian Burk
    Posted on behalf of Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 ...
    on Sep 29, 2011

  • Forum Post: DRV8662 Phase Delay

    Brian Burk
    On behalf of Jacek: I checked data sheet which you sent to me and it is very helpful, but I did not found information about switching time of DRV8662 drivers. There is only information that start up time is around 1.5ms. I understand that start up time is a time from the moment when EN input is...
    on Oct 3, 2011

  • Forum Post: Re: DRV8662 Phase Delay

    Brian Burk
    Jacek, The delay of the DRV8662 will vary with frequency, but should be acceptable for most haptics and audio applications. See the results below. Frequency Delay 150 Hz 137 us 500 Hz 76 us 1 kHz 51 us Measurements were made with 200nF...
    on Oct 5, 2011

  • Forum Post: Re: Full Information on Piezo Haptic Driver

    Brian Burk
    Hello, The full DRV8662 Datasheet can be requested on the DRV8662 product webpage using the link labeled "Request Full Datasheet" Or you can use the link below for direct access to the request form. https://focus.ti.com/general/docs/event/accesseventaction.tsp?actionId=1106 ...
    on Oct 10, 2011

  • Forum Post: Re: On DRV8662

    Brian Burk
    Kanhu, Here are a few responses to your questions: The DRV8662 "full datasheet" has suggestions for all the component values to setup the boost converter to the desired voltage. If you haven't already, please request the full datasheet from this link (you will need to login to...
    on Oct 17, 2011

  • Forum Post: Re: DRV8662EVM-frequency upgradation

    Brian Burk
    Kanhu, Please see section "3.4 Filtering and Adapting PWM Waveforms" in the DRV8662EVM User's Guide to change the bandwidth of the DRV8662EVM. You will need to adjust the input filter to the DRV8662 so that the filter cut-off frequency is higher than 1kHz. If your input is a sine...
    on Oct 21, 2011

  • Forum Post: Re: DRV8662EVM

    Brian Burk
    Please refer to the post below: http://e2e.ti.com/support/other_analog/touch/f/750/t/141838.aspx
    on Oct 24, 2011

  • Forum Post: Re: DRV8662 High output voltage problem

    Brian Burk
    Min, Thanks for your inquiry. Three settings need to be adjusted on the DRV8662 to ensure that the output voltage is set correctly. Set the GAIN pins to the appropriate binary values. Set the boost feedback voltage so that the maximum output voltage is large enough for the gain setting set...
    on Jan 30, 2012

  • Forum Post: Re: DRV8662 and actuators

    Tim Gipson
    Hi Ole, Mide Technology (disclaimer: I work here!) also has a line of hermetically sealed piezo bimorph products ( http://www.mide.com/products/qp/qp_catalog.php#actuator ) that work well over the DRV8662's output voltage range. They are probably more expensive than some others in small quantities...
    on Feb 10, 2012

  • Forum Post: DC coupling DRV8662EVM

    andrew fleming
    Hi, I have an application that requires DC coupling. Can I DC-couple the inputs by removing the filter capacitors C4 and C5? I'm assuming this would be ok providing that the inputs are driven differentially with a bias of say 2V (for a 200V range and 40dB gain.) Thanks, Andrew
    on Apr 17, 2012

  • Forum Post: Need DRV8662 full d/s

    Wendy Fang
    could you send me the DRV8662 full datasheet, please? (including pin assignments, boost converter feedback voltage reference, switching frequency etc.) Thank you in advance, Christian Mallas
    on May 21, 2012

  • Wiki Page: How to configure the DRV8662, DRV2665, and DRV2667 boost resistors

    Brian Burk
    Problem: How do I determine the values of the boost resistors on the DRV8662, DRV2665, or DRV2667? Solution: Follow the Design Equations in the attached file. Input your system parameters and the document will calculate the value of the resistors. The excel file requires that you select standard resistor...
    on Jul 11, 2012

  • Forum Post: RE: DRV8662 user guide

    Brian Burk
    Patrick, The full datasheet is now publicly available on the DRV8662 web page. Sorry for any confusion. Thanks, Brian
    on Dec 4, 2012

  • Forum Post: RE: Source Code for DRV8662 Eval Board

    Brian Burk
    Nikhil, Here is the source code for the DRV8662. Sorry for the confusion. I will have this posted to TI.com immediately. Thanks, Brian
    on Jan 7, 2013

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