hi experts
now i am in design of a custom board and
due to long delivery PMIC such as PF3000 i am considering PF5020 or discrete regulators
there are some question about power supply in IMX6X
1) what is the advantage of using external PMIC over internal LDO ( i just thought on heat generation on IC )
2) from AN12992 Figure 2. it shows that VDD_CORE/VDD_SOC use 1.375V input,
if i use LDO bypass mode, could i keep 1.375V input constantly without no control ( i don't need DVFS and use constant operating frequency and can't find a PF5020 pmic driver)
3) similar to question2 . from kernel dts , imx6sx.dtsi and imx6sx-sdb.dts use different operating-points table, imx6sx-sdb table's 996MHZ voltage is a bit higher , then does that mean that i could use max uV to all frequency ? in case does the IC generate more heat than lower voltage input ?
i googled for days but couldn't find any useful information
any advices or web sites will be of great help
thanks in advance
sincerely
