KB: Operating RSL10 automotive grade package at higher temperatures

Per the NCV-RSL10 Automotive Grade Datasheet, you are required to assign the following trim values in order to operate at temperatures greater than 85°C.

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Hi Mike
Where and how should I setting VDDMRET_VTRIM, VDDTRET_VTRIM, VDDCRET_VTRIM?
I want to know how RSL10 to exceed 85 degrees from 0 to 100 degrees? Thanks.

Hi,

Please refer to section 5.3.4 in RSL10_hardware_reference.pdf available in RSL10 Documentation Package
The ACS_VDDRET_CTRL has three different bit fields used to trim each of the retention regulators. These are:

  • ACS_VDDRET_CTRL_VDDCRET_VTRIM bit controls the VDDCRET retention regulator voltage trimming value, while ACS_VDDRET_CTRL_VDDCRET_ENABLE enables or disables the VDDCRET retention regulator.
  • ACS_VDDRET_CTRL_VDDMRET_VTRIM bit controls the VDDMRET retention regulator voltage trimming value while ACS_VDDRET_CTRL_VDDMRET_ENABLE enables or disables the VDDMRET retention regulator.
  • ACS_VDDRET_CTRL_VDDTRET_VTRIM bit controls the VDDTRET retention regulator voltage trimming value while ACS_VDDRET_CTRL_VDDTRET_ENABLE enables or disables the VDDTRET retention regulator.

Bit filed description of ACS_VDDRET_CTRL can be found in section 5.3.4.1.3.

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