PMU

Browse by Tags

PMU

Welcome to the PMU Section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "New Post".

Sign In to Post
Tags
You have subscribed to this tag. To view or manage your tag subscriptions, click here.   Close
You have unsubscribed from this tag. To view or manage your tag subscriptions, click here.   Close
You are currently viewing:
power-on
Related Posts

  • Forum Post: TPS65950/30/20: VBAT level for power on

    Gandhar Dighe
    FAE question/discussion: Q: If VBAT is higher than 3.2V and in master mode the device will go to active mode as long as PWRON is set to high. Lets assume that 2.8V< VBAT < 3.2V then I would think that if PWRON is toggled from low to high then it goes from waiton to active. A: There are...
    on Apr 2, 2009

  • Forum Post: TPS65950/30/20: VBAT slew rate

    Gandhar Dighe
    Customer question: Q: Is the device sensitive to VBAT slew rate for power-up and should we be worried about any u-v lock out logic? A: No, it is not sensitive to slew rate. It will trigger power-on when VBAT is above the treshold (3.2V +/- 100mV). This threshold is valid when VBAT (battery insertion...
    on Jun 9, 2009

  • Forum Post: Re: Power Up Problems with TPS65920

    Gandhar Dighe
    Hi Howard, Whenever power up problems were seen in the past there were two possible options - 32K oscillations werent correct or the layout did not allow for sufficient current. In your case it doesnt seem to be any of these. I am assuming the trace thickness are sufficient as you have specifically...
    on Oct 9, 2009

  • Forum Post: Re: power down and up of the omap(3530) using the TSP65950

    Sean Heitz
    When I set the STARTON_PWON bit and I removed the power managment stuff from our BSP, I was able to power up by pressing the power button. So it seems the power management software(used in android kernal 2.6.27) is handling the warmrestart coming back from the omap and not ignoring it. So if you could...
    on Jan 11, 2010

  • Forum Post: Re: TPS65950 power up and reset sequence

    Gandhar Dighe
    Hi, You dont need to have a 33ohm on this signal. It will work fine without that as well. Here is what might be happening: When you power-up the platform, it does power up completely. Probe the nRESPWRON continuously (maybe trigger mode) to see that it would go high. This would power on the...
    on Feb 26, 2010

  • Forum Post: Re: Warm reset out pulsing after power up

    wsw
    Hello Rahul/Gandhar, any progress with this problem? I too have some boards now (5 out of 300) which show this or a very similar effect. nRESWARM is pulsed by the OMAP every 8ms. All other sources of reset have been eliminated (programmed inactive/HIZ) and what remains is a direct connection between...
    on Mar 29, 2010

  • Forum Post: TPS65073 with OMAP3530 clarifications requested

    Bjorn Wesen
    Hi! I'm designing an OMAP3530-system which only requires a simple PMU so I think the TPS65073 would fit well. However, the design-in Wiki and the TPS6507x documentation is a bit sparse or downright ambigous on a couple of points which I thought I'd ask here: 1) If not using a battery...
    on May 18, 2010

  • Forum Post: CLKEN not de-asserted down when SYS_CLKREQ on DM3730 is de-asserted

    David Stewart
    Normal 0 false false false MicrosoftInternetExplorer4 In order to reduce power consumption when our platform is suspended (RETENTION OFF MODE), we are trying to get the TPS65950 to de-assert CLKEN when the DM3730 goes into an OFF mode...
    on Apr 21, 2011

  • Forum Post: TPS65910 power on/off via PWRON push-button

    Jun Feng Xu
    TPS65910 PWRON pin link a push-button to realize power on/off ? It is how to realize the switch power ? Need to give it to write programs ? Now, I press the buttons above 8 seconds,but cannot shutdown,it is only new start. I want to know the power on/off process of realization ?
    on Jun 4, 2011

  • Forum Post: Re: TPS65910's PWR_HOLD setting

    Jiansheng Liu
    Just checked from the board and found that VIO can't return back to zero after DEV_OFF bit was set, but remain at about 0.8 to 1V for about 3.5mS, and then return back to 1.8V, because PWR_HOLD pin is tided with it directly, it trigger another power-on process automatically. So in the end, the power...
    on Jan 24, 2012

  • Forum Post: TPS65910 PWRHOLD's connection

    Jiansheng Liu
    Hi, I am getting confused about PWRHOLD's connection. As the datasheet description it should be connected to VIO to maintain power rails output (that is what I am doing), however the link below about a reference design pulls up this pin to VTRC instead: http://designsomething.org/craneboard...
    on Jan 25, 2012

  • Forum Post: TPS65950/30/20: Hardware power ON logic

    Gandhar Dighe
    FAE question and communication: Q: A customer of mine uses the TPS65930 together with the OMAP device. He wants to achieve a simple task: via an external signal at pin PWRON he wants to switch on the system as well as switch off. He could not get the system working. Can you please help me in describing...
    on Jun 19, 2009

  • Forum Post: Re: Connection problem about "PWRHOLD" pin of TPS65910 for AM3517 ?

    shekhar SAINI97194
    Hello Flore Auzanneau, When we set the DEV_ON bit the device will turn off once but restart again as PWRHOLD is the enable condition of the device as per my understanding( pg-41). Can we make PWRHOLD high before NRESPWRON goes high through some external device? Kindly clarify.
    on Apr 10, 2012

All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.

Content on this site may contain or be subject to specific guidelines or limitations on use. All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site. TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

TI Worldwide | Contact Us | my.TI Login | Site Map | Corporate Citizenship | mobile m.ti.com (Mobile Version)

TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs and
embedded processors, along with software, tools and the industry’s largest sales/support staff.

© Copyright 1995-2013 Texas Instruments Incorporated. All rights reserved.
Trademarks | Privacy Policy | Terms of Use