Hello,
We are using PF3000 to drive i.MX6UL. I am using PF3000 SW1A switcher to drive 3.3V power rails of the CPU, which includes NVCC_LCDIF,NVCC_ENET, NVCC_NAND, NVCC_GPIO, NVCC_SD, NVCC_CSI, NVCC_UART.
Out of this we are not using LCD, NAND interface. Based on the calculations done with the help of datasheet, the overall current consumption comes out to be around 100mA, while SW1A can provide current upto 1A.
While in EVK some interface used work on 1.8V(UART and CSI). So I am worried as I am using all interfaces on 3.3V and SW1A can drive the required current to the CPU or not.
Let me know your comments on this.
Regards,
Surendra
Yes, it is possible to make the SW1A switching regulator of the PF3000 PMIC to produce the 3.3V output at up to 1.0A load current when operating in independent mode. The maximum current consumption depends on the application, performed task etc. On the other hand, 1.0A at 3.3V seems to be quite enough to supply all of the processor's peripheral I/O power rails. Calculate the power budget as per the "Maximum Supply Currents" table of the i.MX6UL Data Sheet document and the "i.MX6UltraLite Power Consumption Measurement" AN5170 Application Note document. Both are available on the processor's Documentation web page:
Have a great day,
Artur
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Hi Surendra
both 1.8V and 3.3V are allowable for NVCC_LCDIF,NVCC_ENET, NVCC_NAND, NVCC_GPIO,
NVCC_SD, NVCC_CSI, NVCC_UART according to Table 11. Operating Ranges i.MX6UL Datasheet
and both options can provide necessary currents
http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6ULCEC.pdf
Also you can obtain schematic PF3000 with i.MX6UL creating service request.
Best regards
igor
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