topic Sabre board power sources bad sizing? in i.MX Processors

Sabre board power sources bad sizing?

markoslosada — Fri, 20 Mar 2015 16:44:23 GMT

I am working with the SABRE Platform for Smart Devices Reference Design Based on the i.MX 6 quad core. I have noticed that the power consumption of the IMX6 core (VDD_ARM23_IN) may be grater than the used source capability, i.e. the switching regulator PF0100 SW1A/B can generate just up to 2500 mA and the ARMCORE could achieve a consumption up to 3920 mA.

If this is true, the SABRE board would work ok if this limit is not exceed. However, if the IMX6 is bring under a high performance processing task, it could not work properly. Am I right? or Am I forgetting something?

Thank in advance

Re: Sabre board power sources bad sizing?

igorpadykov — Sat, 21 Mar 2015 13:07:40 GMT

Hi Markos

3920 mA is for very special test "Power Virus", not practically

achieved in real life applications. Real power consumption figures

one can find in AN4509 i.MX 6Dual/6Quad Power Consumption Measurement.

However in general you are right, pmic current limit should not be exceed,

otherwise processor could not work properly.

Best regards

igor

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Re: Sabre board power sources bad sizing?

adriengambino — Fri, 29 May 2015 18:43:24 GMT

Hi igorpadykov,

How long does the power virus last? Is this for a short period of time?

Could you confirm that as long as the PMIC current limit is not hit, the virus mode can be achieved?

Do you have any measurement results for virus mode done on PF0100 ? It will be extremely useful for our upcoming PMIC.

Thank you in advance.

Best Regards,

Adrien

adding christianassier;mohamedzubair;AnandBalakrishnan;

Re: Sabre board power sources bad sizing?

igorpadykov — Sat, 30 May 2015 14:36:12 GMT

Hi Markos

power virus codes are internal codes, not available

for customers. AN4509 shows data for real life

applications, please use them.

Best regards

igor