• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 353 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.

LM10011 + DCDC with 5A max

Natallia Holubeva1
Expert 6550 points
Other Parts Discussed in Thread: LM10011, LM21215, LM21305, LM27403

Hello e2e,

I am looking to power the Keystone 1 (C6655) using the LM10011. The EVM uses the digital version for voltage scaling, but the app note on Keystone 1 mentions I can use either Analog or Digital. Do you have a particular preference for CC6655? Also, the buck that goes with LM10011, I see we did testing with the high current LM21215. In my application, I need only 5A out (maximum, for the most part 3A). The app note again mentions any buck with compatible feedback can be used, so I assume any buck with external compensation. Do you have any suggestions and do you know if any testing was done with lower current bucks?

Thank you very much for your help,

Natallia 

  • 0
    TI__Mastermind 49827 points

    Hi Natallia,

    Yes, the LM10011 will work with any converter with a FB pin. Current from the LM10011’s IDAC_OUT pin is injected into the FB node to adjust VOUT as required.

    Choice of a suitable 5A buck regulator depends on the input voltage operating range as well as efficiency and size requirements. For example, the LM21305 current-mode controlled 5A synchronous regulator operates from 3V to 18V input, VOUT can be as low as 0.6V, and it has switching frequency synchronization, precision enable, PGOOD, etc.

    You may also want to check out design example 2 provided in the LM27403 datasheet. Finally, you can review the hardware design guide for Keystone I devices at www.ti.com/.../sprabi2c.pdf.

    Regards,

    Tim