Vybrid ProcessorsのトピックRe: Vybrid maximum current consumption

Vybrid maximum current consumption

vadimaleynikov — Tue, 02 Feb 2016 13:15:30 GMT

The Vybrid datasheet (VYBRIDFSERIESEC) specifies in Table 15 Idd_RUN current values (typical and maximum). What are these values? If they are the 3.3V currents and include the Core and SDRAM currents via linear regulators?

Re: Vybrid maximum current consumption

Nouchi — Tue, 02 Feb 2016 15:08:58 GMT

Hello Vadim,

You'll probably find this application note useful :

http://cache.nxp.com/files/32bit/doc/app_note/AN4807.pdf?fpsp=1&WT_TYPE=Application%20Notes&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf&WT_ASSET=Documentation&fileExt=.pdf

Emmanuel

Re: Vybrid maximum current consumption

vadimaleynikov — Tue, 02 Feb 2016 15:44:47 GMT

Thank you Emmanuel,

but unfortunately AN4807 doesn't answer my questions and I already know it. This AN specifies (similar to the datasheet) undefined "RUN" current in Table 2.

Best regards,

Vadim

Re: Vybrid maximum current consumption

jiri-b36968 — Wed, 03 Feb 2016 14:34:11 GMT

Hello Vadim,

this is total current going into Vybrid SoC. It includes 1.2V rail current (core, platform) , 3.3V IO current (GPIO interface, internal LDOs, 1.5V IO current for DRAM interface).

SDRAM current itself is not included - it does not go into Vybrid SoC.

Max. value in DS represents absolute maximum current for full temp range.

A current consumption depends on your use case and a temperature. Some use cases were defined, tested and results published in AN4807. You can find use case which is near your use case to estimate power consumption.

/Jiri

Re: Vybrid maximum current consumption

vadimaleynikov — Wed, 03 Feb 2016 15:30:44 GMT

Hello Jiri,

Thank you very much for your exhaustive reply.

Best regards,

Vadim Aleynikov