C6746 power requirements vs C6745/7

The C6746 must be powered as described in its datasheet. No differing statements in the C6745/7 datasheet can be used for the C6746 in place of the statements in the C6746 datasheet.

There are some similarities between the datasheets for these devices, but each device must be powered and sequenced as described in its own datasheet.

I may be missing some subtle point you are trying to make or to reference. If so, please clarify your question.

Regards,
RandyP

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Hi RandyP

I was trying to verify if there is similar power solutions that can be used for either device.  Mainly, an integrated PMIC part or power management solution that is targeted for either device?   I wouldn't think so since they each have their own set of power requirements.  

I have come across solutions that use either multiple LDOs, discrete DC/DC converter and LDOs, or dual DC/DC converter and  seperate LDO.  

Could the TPS65023 + a seperate LDO (for PLL) be a potential solution to power the C6746? 

Terry,

It sounds like what you want is a power solution for the C6746. Is that correct?

RandyP

Yes, that would be correct.

Terry,

I get to sound really smart, but one of our factory experts pointed me to this Application Note, High-Integration, High-Efficiency Power Solution Using DC/DC Converters With DVFS.

If you go to the TMS320C6746 Product Folder and click on Technical Documents, you will find this and 4 other power solution app notes, depending on the type of supply you would like to implement. I have not read them, but I expect you can find exactly what you want there.

Regards,
RandyP

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Wow. He just made me even smarter. I always wondered why we did not have an easy-to-use complete power solution for our DSPs, especially since they are starting to have so many power rails and can use specific PMICs.

Well, we do have just that! And I am going to try to remember it for my next customer meeting.

Go to www.ti.com and under Products on the left-hand side, click on Power Management.

In the center column there, you will see Power & Analog for Processors and FPGA's. Use the two drop-down boxes to pick the device you want to power and click Go. For your example, it would be Processor Type - C6000 DSPs and Processor Family - TMS320C6742/6746/6748.

This awesome page comes up with the power requirements for the devices, plus a list of reference designs depending on your power source and how integrated you want to go.

I am glad to find this, so I am glad you asked and glad Mukul passed on these web jewels.