Hi !, community.
I found operating voltage restriction between LDO_SOC and LDO_PU in iMX6SDL datasheet IMX6SDLAEC (Rev. 5, 06/2015)
----- Page 26, Note4
In LDO enabled mode, the internal LDO output set points must be configured such that the:
• VDD_ARM LDO output set point does not exceed the VDD_SOC LDO output set point by more than 100 mV.
• VDD_SOC LDO output set point is equal to the VDD_PU LDO output set point.
The VDD_ARM LDO output set point can be lower than the VDD_SOC LDO output set point, however, the minimum output set points shown in this table must be maintained.
-----
But, our customer set each LDO voltage with LDO enable mode as follow:
(They use custom linux OS.)
- LDO_SOC_CAP = 1.200V (PMU_REG_CORE [REG2_TARG] is set to 10100)
- LDO_PU_CAP = 1.150V (PMU_REG_CORE [REG1_TARG] is set to 10010)
That is LDO_SOC_CAP and LDO_PU_CAP are not same voltage setting.
What will be a problem in this case ?
BR,
kanou
解決済! 解決策の投稿を見る。
Hello,
The restriction, that VDD_SOC LDO should be equal to the VDD_PU LDO,
should be provided to avoid internal leakages on i.MX6. Please pay attention on imperative
of the restriction.
The recent i.MX6 S / DL Datasheet(s) [Rev. 7, 10/2016] may be found
on the Web.
Summary Page :
< http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/i.mx-applications-process... >
Have a great day,
Yuri
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Hello,
The restriction, that VDD_SOC LDO should be equal to the VDD_PU LDO,
should be provided to avoid internal leakages on i.MX6. Please pay attention on imperative
of the restriction.
The recent i.MX6 S / DL Datasheet(s) [Rev. 7, 10/2016] may be found
on the Web.
Summary Page :
< http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/i.mx-applications-process... >
Have a great day,
Yuri
------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct
Answer button. Thank you!
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