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CC3200: Thermal Resistance and Management

F Spazzer
Prodigy 30 points
Part Number: CC3200


Tool/software:

Hello,

I am looking for more details than what is offered in the spec sheet regarding thermal performance of this chipset.  In particular I am looking for thermal resistance of said chipset and other thermal performance measurements such as throttling.  I have not been able to find anything in the library so would like to see if there is anything else available.

  • 0
    TI__Expert 3780 points

    Hello,

    I have assigned this thread to one of our Hardware experts, they are checking on this and will get back to you in coming day.

    Regards,

    Jonathan

  • 0 in reply to Jonathan Cohen
    TI__Expert 6580 points

    Greetings,

    There is already temperature information on the CC3200 Datasheet (Lit# SWAS032), see images below. There is also the QFN and SON PCB Attachment Application Note (Lit# SLUA271) that gives more information on soldering/attaching our QFN packaged (which includes the VQFN packaging) devices to a PCB including "Solder Reflow" information.

    If this is not what you need, could you explain more on why you need this information? Depending on your end use case there may be other information that could help.

    BR,

    JMT 

  • 0 in reply to Jessica M. Torres
    Prodigy 30 points

    Hello, I guess what I am after is the thermal efficiency of the chipset so we can ensure we are keeping it thermally happy no matter the consumption.

    for instance, 

    For a resistor, if you consume 1W of power then 100% of that 1W is dissipated as heat.  

    An RF systems consuming 1W (when transmitting) is turning that energy into radio waves, i.e. not dissipating it all as heat. So what I would like to know is basically if you tell me that you're consuming 1W, is that 1W of heat or is that 1W total, but only 0.2 W of heat.

  • 0 in reply to F Spazzer
    TI__Expert 6580 points

    I am not sure we have specific information on how much heat is being dissipated when transmitting, but it should be negligible amount. We do specify the recommended operating temperature range in the datasheet.

    Why do you need this information, what is your end use? Is your end product expected to produce a lot of heat?

    You could also measure the power consumption yourself, refer to section "2.6 Measure CC3200 Current Draw" of our CC3200 Launchpad User Guide (Lit# SWRU372).

    BR,

    JMT

  • 0 in reply to Jessica M. Torres
    Guru 80445 points

    Hi,

    Just a small comment. CC3200 have a thermal protection which protect PA inside CC3200 from damaging by overheating. Important is following point from datasheet:

    (2) When operating at an ambient temperature of over 75°C, the transmit duty cycle must remain below 50% to avoid the auto-protect feature of the power amplifier. If the auto-protect feature triggers, the device takes a maximum of 60 seconds to restart the transmission.

    But for real application with connected STA mode this is not a issue. Because there should not be TX duty cycles above 50%. This may to be issue when CC3200 is used at high temperatures at transceiver mode.

    to F Spazzer: There is not a easy answer for your question. CC3200 is not only RF transceiver but whole SoC with network core (NWP), application core, peripheral. And you need to take into account current from/into I/O pins and not only input power (from Vcc) vs RF output power.

    Jan