• State
  • Locked Locked
  • Replies 5 replies
  • Subscribers 99 subscribers
  • Views 574 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TDA4VM: Power Consumption of TDA4VM in Different Power Modes, and Port Map of TDA4VM for the different I/O Interfaces

Jyoti Kulkarni
Prodigy 20 points
Part Number: TDA4VM

Hello Support Team, 

Our Requirement is to use TDA4VM Micro for one of the ECU which acts as domain controller in an Automotive Vehicle.

As per power requirements, from the client point of view they specify as below :

"In Sleep Mode the ECU is connected to Vehicle Power. Power consumption in this state shall be minimized. The RTC shall be powered, and the devices shall have the ability to transition to ACTIVE mode after a WAKE signal is applied. In this mode, the ECU’s total current draw shall be less than or equal to 0.75 mA at 12V and 1.15mA at 24V at maximum operating temperature and external power source range of 9-32V. (The ECU is not necessarily in Sleep Mode when the KEY SWITCH is OFF).

Questions :

  1. Is the above values achievable? 
  2. What is the Min and Max current drawn in Sleep Mode
  3. What are the Power Modes Supported and total current drawn in each mode.

As per the plan , below functions need to be supported, Please provide the port mapping to these features as per TDA4VM

USB Host

Serial R232, RS485

CAN FD

12V Camera

LVDS diaplay Interfaces

Ethernet Interfaces

A2B

FM/AM/DAB Radio Modules

  • 0
    TI__Mastermind 20030 points

    There are two possible ideas:

    shut down SoC and wake through the PMIC 

    DDR Ret is possible in hardware, but software complexity is high and not supported in standard SDK

    Kevin

  • 0 in reply to Kevin Lavery
    Prodigy 20 points

    I would Like to know the detailed answers for the questions listed above, Please also provide the Port mapping reference for the given Interfaces.

    What are the PMIC's suggested to be used.(In case if wakeup is done through CAN signal) 

  • 0 in reply to Jyoti Kulkarni
    TI__Mastermind 20030 points

    In DDR RET, the entire chip is powered down and context would be saved to DDR. The state of internal modules is powered off.

    Kevin

  • 0 in reply to Kevin Lavery
    Prodigy 20 points

    Hello Kevin Thanks for your reply, I appreciate it.

    My Intention here to know is:

    As we receive a wakeup signal via CAN/i2c,  until it is triggered  ECU shall be in Low power mode in normal Operation.

    If ECU is set to be in Sleep/Stand-By Mode then it shall be put to power saving mode.

    • Does TDA4VM Supports any Low power mode by itself?

    • If not how it is achieved ? Above you replied "shut down SoC and wake through the PMIC "  Is this same as MCU Only where Pmic transitions from Active to MCU only mode

    • Which PMIC supports MCU Only , What is best advised PMIC?

    • If MCU Only Mode is chosen is CAN wake up possible?

    • What is Suspend to Ram and how it works?

    • If Client need to enable RTC_wakeup  how this is achievable?  how RTC is interfaced with the MCU?   (Here by RTC-Wakeup I mean Real time Clock asserts an Alarm which will wakeup the MCU)

     

  • 0 in reply to Jyoti Kulkarni
    TI__Guru 54382 points

    Jyoti,

    The TDA4VM PDN-0C that is used on the Starter Kit serves as a good example and starting point for your design, including MCU only mode and lower power hooks.

    https://www.ti.com/tool/SK-TDA4VM#design-files

    Regards,
    Kyle