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Ultrazed Hardware Design Is power management possible on Ultrazed-EG?
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Related

Is power management possible on Ultrazed-EG?

rda_emcraft
rda_emcraft over 9 years ago

We are looking for a hardware platform to prototype power management on Zynq.

We need the hardware to be started with only Low-Power Domain and PS MIO powered on Zynq with the ability to turn of Full-Power and Programming Logic power domains later under software control.  Is this possible on Ultrazed-EG?

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  • Former Member
    0 Former Member over 9 years ago

    UltraZed-EG SOM power is designed to allow entring low power mode after the initial power-on. What that means is that the SOM will always power-on in Full Power Mode and then it can be placed in the Low Power Mode under software control.

    The UltraZed-EG SOM power rails are implemented using two Infineon PMIC devices. The PMIC devices can be controlled via their PMBus interface for the purpose of power management. Using the PMBus interface, any PMIC output voltage can be turned off under software control. On the UltraZed-EG SOM the PMIC PMBus interface is connected to the MPSoC I2C interface (PS MIO pins that are always powered). This allows software to control the PMIC devices via the MPSoC I2C interface and turn off some of the PMIC outputs on demand.

    In April, we will post a reference design on ultrazed.org website that will demonstrate the Low Power Mode capabilities of the UltraZed-EG SOM.

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  • Former Member
    0 Former Member over 9 years ago in reply to Former Member

    I am trying to marginally change the core voltage of PL marginally (+- 3 % probably). May I know the names of those Infineon's PMBus interface software and dongle?

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  • jafoste4
    0 jafoste4 over 9 years ago

    Hello Gouthamp,

    We do not recommend altering any of the MPSoC voltage rails. Any attempt to change the MPSoC voltage rails will void your warranty. If you insist on going foward with this, you will need to contact Infineon to get the PMBus dongle and programming software.

    --Josh

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  • rda_emcraft
    0 rda_emcraft over 8 years ago in reply to Former Member

    Are there any news on that reference design with Low Power Mode?

    I was unable to find it on the site.

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  • rda_emcraft
    0 rda_emcraft over 8 years ago

    Are there any news on that reference design with Low Power Mode?
    I was unable to find it on the site.

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  • jafoste4
    0 jafoste4 over 8 years ago

    Hello RDA,

    The Low Power Mode reference design we were planning had unfortunatly gotten pushed back. My apologies.

    When I hear more in regards to it I will post back here.

    --Josh

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  • okarin
    0 okarin over 7 years ago in reply to jafoste4

    Sorry for necroing the thread.

    I'm also very interested in the Low power mode reference design.

    Any hope of seeing it soon?

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