topic Re: Typical Power Consumption SABRE SDB in i.MX Processors

Typical Power Consumption SABRE SDB

Jochi119 — Thu, 14 May 2015 18:41:58 GMT

Hello,

I am working with an i.MX6Q and using the SABRE SDB as my platform. When looking at the schematics on pg.19 of 25 I see the Current consumption for the power rails on the PF0100. My question is: SW1A & SW1B (VDDCORE) has a current consumption of 2155mA for the processor, but SYS_4V2 which is supplying power to the entire board has a current draw of only 1001mA for that rail. It might be a stupid question, but if I total up the current consumption for the board we total 7375mA and right next to it they show "Total system Current Requirements" of 4454mA for SYS_4V2. How can this be?

Re: Typical Power Consumption SABRE SDB

igorpadykov — Fri, 15 May 2015 00:39:28 GMT

Hi Joseph

typical power consumption data measured on real board is given in

AN4509 i.MX 6Dual/6Quad Power Consumption Measurement

datasheets gives max. theoretical values often not reachable in real applications.

Best regards

igor

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Re: Typical Power Consumption SABRE SDB

Jochi119 — Fri, 15 May 2015 00:59:49 GMT

Hey Igor,

I saw this App note, thanks for that. My question would be if you add up all the power under current drawn we get around 7375mA but the schematic only has around 4454mA for total system current requirement. The power supply that comes with the SABRE card also is only 5A. Where does all the extra power come from?

Re: Typical Power Consumption SABRE SDB

igorpadykov — Fri, 15 May 2015 02:52:41 GMT

Hi Joseph

7375mA is max. available (max. per datasheet), not reachable in real applications.

~igor