Hi all,
I made board that uses I.MX28.
In power part, i used "Battery powered application model" for decreasing I.MX28 heating. "VDD5V model" runs LinReg always. I think, it makes big heating. My board should operate at least 10 years nights and days.
Anyway, the problem is I don't want to use BATTERY for reducing the board cost.
What is happen if i remove battery in "Battery_powered application model"?
In this case, BATTERY and DCDC_BATT pin are floating. Does it make no problem?
And, in this case "VDD5V source only model" is the best way?
I really really appreciate to reading this.
Solved! Go to Solution.
Hi Eunseok
one can use VDD4P2 power node instead BATTERY and DCDC_BATT,
this is described in AN4199 4.1.2.1 VDD5V source only: hardware configuration
Figure 9 shows connections for BATTERY and DCDC_BATT, leaving them floating
not recommended since may cause problems in low power modes.
Best regards
igor
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Hi Eunseok
one can use VDD4P2 power node instead BATTERY and DCDC_BATT,
this is described in AN4199 4.1.2.1 VDD5V source only: hardware configuration
Figure 9 shows connections for BATTERY and DCDC_BATT, leaving them floating
not recommended since may cause problems in low power modes.
Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Why is it problem in LOW POWER MODES?
I can't find the reason.
And how to distinguish between HIGH POWER MODES and LOW POWER MODES?