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S32K144EVB-Q100 VLPS current

Question asked by Suresh Jayagondar on May 11, 2018
Latest reply on Aug 10, 2018 by Shuang Ji


I am using S32K144EVB-Q100 and running example program “power_mode_switch_s32k144” to determine power consumption in different operating modes. When switched to VLPS ( after entering VLPR) according to Table 7 (Power consumption ) current should be in micro amperes ( 29.8 or 39.1 depending on peripherals). But I am seeing 1.3 mA. UART interface shows that it is transited to VLPS mode but current ratings are not matching.

Can you please clarify is there something I am missing here or the program I am running needs any change. According to below section other clocks shall be disabled can someone point me to the code which is doing it ?

26.4.4 VLPR/VLPS mode entry

When entering VLPR/VLPS mode, the system clock should be SIRC. The FIRC, SOSC,

and SPLL must be disabled by software in RUN mode before making any mode


Can you please point to the code which is doing this.

Current is measured between VDD and VDD_MCU across R117 ( from schematic for EVB)