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Choosing between Tiva C series and Piccolo MCU

ISHAN SHAH1
Intellectual 370 points

Other Parts Discussed in Thread: TM4C123BE6PM, TMS320F2802, TM4C1294NCPDT

Hi all,

I am designing 2KW resonant power supply. My general requirement for MCU is 8 channel ADC and 8 channel of PWMs. 

I am stuck between Tiva C TM4C123BE6PM or the Piccolo series TMS320F2802/3X series. I know one is ARM and other is C28x and both has extensive library. Tiva has FPU, Piccolo does not (some do some not). Tiva has max operating temp of 85C where as Piccolo can go up to 105/125 C.

What other points I should take into consideration in choosing between 2. Can someone please point out a distinctive advantage of one over other, which can help me take decision. One thing I hear about Piccolo is Piccolo series is specially for power supplies, does this mean it has not susceptible  to noise, more rugged ??!!.

Thanks 

  • 0
    Expert 2355 points

    Hello,

    First off, I have not used the Piccolo.  I have used the Tiva M4 and gotten amazing performance out of it.  However, the Piccolo has MUCH better peripherals for power and motion control than the Tiva.  I really wish TI would put their supurb Piccolo peripherals into a new generation Tiva (either M4 or M7) - then we could have the best of both!

    Regards,

    Dave

  • 0 in reply to SourceTwo
    Intellectual 370 points

    Hi Dave,

    Thanks for your reply. What was the power level of your application. I am developing a full bridge for induction heating, my concern is the temperature, Piccolos are available in 105C and 125C operating temperature. Tiva is only 85C. 

    Do you think Tiva will withstand at high temperature, I am expecting temps on the board to be atleast 65-70 C. Do you think Tiva will still perform. is 10-15C margin enough ???

    Thanks,

    Ishan

  • 0 in reply to ISHAN SHAH1
    Expert 2355 points

    Hi Ishan,

    In looking at the TI website, between the TM4C123 and TM4C129, they're 27 devices listed that go to 105C, 7 of which are TM4C123s.  I believe you mentioned the TM4C123A?  Once of the devices that goes to 105C is the TM4C123FH6PMTR which is a superset of the TM4C123A.  It looks like they're in stock at Verical(?)

    Regards,

    Dave 

  • 0 in reply to SourceTwo
    Prodigy 30 points

     

    for a new project we plan to use the chip TM4C1294NCPDT. It is specified for temperature from -40 to +105 C. It is very important for as to get this version, not the industrial range (-40 to 85). We can start develoment now, but we must be sure to get the extended version later. Until now we were not able to buy it at one of our distributors. Does anyone know, that this chip really exist and will be available within the next 6 month? Can someone point out where to buy it?

    Thanks in advance