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TI Home » TI E2E Community » Support Forums » Amplifiers » /etc... Amplifiers & Other Linear » All Tags » DRV104
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/etc... Amplifiers & Other Linear

Welcome to the /etc... Amplifiers & Other Linear Section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "New Post".

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Related Posts
  • Forum Post: DRV104 issue

    Matthew Kavalauskas Matthew Kavalauskas
    I am using the DRV104 with a solenoid and a 24V supply. While the initial "strike" produces the appropriate 24V output, the "hold" does not give 24V. Instead, it jumps up to about 6V and then sawtooths to about 12V before dropping back down (measured with an Oscilloscope at...
    on Jan 12, 2011
  • Forum Post: Re: DRV104 issue

    Bruce Trump Bruce Trump
    Matt, Is the solenoid physically closing and holding properly when this behavior is observed? Have you tested a second unit? (We should reduce the possibility of a defective or damaged IC.) Regards, Bruce.
    on Jan 12, 2011
  • Forum Post: Re: DRV104 issue

    Bruce Trump Bruce Trump
    Matt, If the solenoid is not closing or staying closed, its inductance will be low and you may run into some strange issues. In the case of 50% duty-cycle, when the solenoid is closed, does the voltage waveform swing to 24V? What is the solenoid current in this condition? The status flag may provide...
    on Jan 12, 2011
  • Forum Post: Re: DRV104 issue

    Bruce Trump Bruce Trump
    Sorry, Matt, but we should back up and check some basics. Looking at figure 1 of the data sheet: Is C-Boot installed from pin 5 to pin 6. ?? Pins 8, 9, 10 connected? No other capacitors connected to output pins. Capacitors from output to ground will trip the current limit. Bypass cap, 1uF...
    on Jan 12, 2011
  • Forum Post: Re: DRV104 issue

    Bruce Trump Bruce Trump
    Matt, I, too, am suspicious of something going on with the load impedance. The next step is to assure that it can drive a resistor load to a full current output level. If you want to provide contact information, we can take this off line and drill a bit deeper. Bruce
    on Jan 12, 2011
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