• State TI Thinks Resolved
  • Locked Locked
  • Replies 7 replies
  • Answers 3 answers
  • Subscribers 82 subscribers
  • Views 334 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320F280049C: TMS320F280049

Nimish Swadia
Prodigy 60 points
Part Number: TMS320F280049C
Other Parts Discussed in Thread: AM3351

Hello Ti Technical Team,

Following questions on DC Fast charger design (25KW to 350KW) .  Shall appreciate a response

1.  Is TI recommending F280049 MCU for both 3 phase Vienna architecture and  high voltage  DC/DC converter side  ( one each MCU for both designs?).  Is this more EV charger specific MCU?

2. For which application  F2838xD  is recommended by TI??  Is this MCU  good for EV charger application or F280049 is best suited??   Is higher MIPS, CPU speed, Dual CPU over kill for EV application??

3.  how  the advantage of 2 independent CLAs  but of type1  (for instrumentation and control ISRs) of F2838xD is addressed effectively by single CLA but of type2  in F280049 ??   Pl explain in detail difference between type1 CLA and type2 CLA   and can we  ensure both instrumentation and control ISRs as effectively in F280049 as F2838xD??  

4.  Pl advise the most appropriate and powerful  MCU for overall supervisory activities, HMI connectivity, RFID paymnet gateway etc.  in an EV charger with good internal  and external communication  features and connectivity ports requirements  of an EV charger??  ( CAN, 10/100 Ethernet, GSM connectivity,  USB etc port as per standard recommendation for EV charger external connectivity),   

5.  Please suggest evaluation board for F280049 to start with the design aspect and order placing address.   

Best Regards

Nimish Swadia

  • 0
    TI__Mastermind 43730 points

    1.  Is TI recommending F280049 MCU for both 3 phase Vienna architecture and  high voltage  DC/DC converter side  ( one each MCU for both designs?).  Is this more EV charger specific MCU?

    Nimish, C2000 MCU focus on real time control applications. Depending on system needs number of PWMs , memory , conditions that need to be supported etc. F280049 can control vienna rectifier , or even F28002x  can do the job. Also with the wide power range you mentioned different architectures can make sense. Can you be specific with your need, i.e. PWM switching frequency of the power stage, exact topology for DC-DC converter, how many interleaving etc? Communication requirements and we can suggest a part for you. 

    2. For which application  F2838xD  is recommended by TI??  Is this MCU  good for EV charger application or F280049 is best suited??   Is higher MIPS, CPU speed, Dual CPU over kill for EV application??

    Depends on the system, for single stage control F28004x is enough, but when you integrate PFC + DC-DC and or HV-LV DC-DC then F2837/8x class device make more sense

    3.  how  the advantage of 2 independent CLAs  but of type1  (for instrumentation and control ISRs) of F2838xD is addressed effectively by single CLA but of type2  in F280049 ??   Pl explain in detail difference between type1 CLA and type2 CLA   and can we  ensure both instrumentation and control ISRs as effectively in F280049 as F2838xD??  

    You can refer to the TRM for the CLA type 2 and Type 1. Main difference is support of background task on Type 2. We also did add one more addressing mode which helps with structure accesses on CLA on Type 2. We have several example in the SDK that use background task fo the instrumentation ISR and CLA task for the main ISR 

    4.  Pl advise the most appropriate and powerful  MCU for overall supervisory activities, HMI connectivity, RFID paymnet gateway etc.  in an EV charger with good internal  and external communication  features and connectivity ports requirements  of an EV charger??  ( CAN, 10/100 Ethernet, GSM connectivity,  USB etc port as per standard recommendation for EV charger external connectivity),   

    You may be best to post this question as a separate thread. C2000 devices do support CAN, Ethernet and USB. 

    5.  Please suggest evaluation board for F280049 to start with the design aspect and order placing address.   

    Please see the design and development tab

    https://www.ti.com/microcontrollers/c2000-real-time-control-mcus/design-development.html

  • 0 in reply to Manish Bhardwaj
    Prodigy 60 points

    Hello Mr. Manish Bhardwaj ji,

    Thanks a lot for your prompt response.  In continuation with your reply against point no1, attaching herewith our proposed block diagram for EV charger.

    We intend to design one basic design of a 50 KW rating and parallel connection for achieving higher KW ratings. ( 100KW, 150 KW etc)

    1. AC-DC: we intend to implement Y-connection Vienna rectifier  ( attached circuit diagram).

            2. DC-DC  Isolated LLC Resonant Active Bridge.  Scalable with parallel connection.  ( attached circuit diagram)

    Switching frequency is also mentioned in the attached drawing. 

    We wish to have CAN bus/Ports, RS 485, Ethernet  communication for internal devices/HMI and Ethernet/4G, optional wi--fi, CAN bus for External connections/ports.  

    We hope required information as requested by you under point no 1 of your reply is now available.  We now request you to advise on the most suitable MCU for both the stages.   

    Best Regards

    For Electronic Systems

    Nimish Swadia

     

  • 0 in reply to Nimish Swadia
    TI__Mastermind 43730 points

    Nimish,

    For individual stage control vienna and LLC separate F28004x will be my preferred choice to start with. It gives you enough flexibility and room to experiment with different techniques you may need.

    Once you have a better idea you can migrate to F28002x device for cost savings. Or look at option to integrate on a single F28004x the vienna and the LLC two stages.  

    Both devices have CAN, F28004x 1 and F28002x 2, we do not have Ethenet on these parts, but typically the C2000 MCU will be talking to a general purpose MCU which has ethernet and connectivity options. 

    I have forwarded your thread to additional folks for recommendation on the general purpose MCU for EVSE.

    -Manish  

  • 0 in reply to Manish Bhardwaj
    Prodigy 60 points

    Hello Manishji

    Thanks for your reply based on proposed EV block diagram submitted yesterday on continuing mail thread on the subject.  cAlso I have received  reply on Supervisor control and connectivity MCU  on a  parallel thread  addressed by a different team member ( Mr. Oshama Ahmed).  

    In your latest reply, you have suggested to start with F28004X MCU,  one each for Vienna and DC/DC side and then optimize based on our final design to integrate in one MCU F28004x .  Thanks for your advise.

    However on a separate reply on Supervisory MCU,  your TI team member Mr. Osamah Ahmed has advised to go for high end MCU   F2838X series which has Ethernet connectivity.

    So Final verdict comes out to start design with is 2 nos F28004x  as per your mail advise and one no F2838X MCUs  for Supervisory control based on both replies. 

    But now my question is that if we have to in any case go with  F2838X MCU for Supervisory control and connectivity,  then can we not  utilize this high end ( I assume F2838x is Delfino series MCU hybrid having DSP features)  MCU capability for DC/DC stage design also  ( we intend to start with DC/DC design first)  ??     

    Will above combination of 2 MCUs  ( one high end F2838x plus F28002x or F280049)  not be an ideal  combination to achieve over all EV control functions??  (Vienna + DC/DC + Supervisor controls and connectivity?)

    Frankly we do not have large development team so it is important for us to first finalize best and latest topology  and MCUs and do focused working on the design.   In this connection, also wish to have your observations / advise on the EV scheme sent to you.  We intend to go for SIC MOSFET design instead of IGBT in all stages.  Also we have opted for Thyristor based controlled rectifier  in the Vienna side rectifier design (instead of standard 3 phase diode bridge) to take care of control of DC bus voltage link.

    I shall be thankful to you if you can comment on above final MCU combination and EV scheme proposed by us to start the work.

    Best Regards

    Nimish Swadia     

  • 0 in reply to Nimish Swadia
    TI__Prodigy 360 points

    Hi Nimisha -

    I am stepping in for Manish to answer below question. 

     Pl advise the most appropriate and powerful  MCU for overall supervisory activities, HMI connectivity, RFID paymnet gateway etc.  in an EV charger with good internal  and external communication  features and connectivity ports requirements  of an EV charger??  ( CAN, 10/100 Ethernet, GSM connectivity,  USB etc port as per standard recommendation for EV charger external connectivity)  


    Typically, customers design HMI as a standalone module. We has seen several customers use AM3351/2/4/6 family of devices for HMI in EV Chargers. TIDEP-0087 can serve as a good starting point for design of an HMI module and offers support for Ethernet, UART, USB, Audio codec etc. Hope this helps.

    Thanks,

    Jayanth