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  • Forum Post: Re: PMIC quiescent current at very light loads

    Michael Day
    I think you are really asking what the input current to the PMIC will be. Quiescent current is only tested in non switching conditions. For your question, you are operating the power supply with a light load. You may be able to estimate the input current using the efficiency plots in the datasheets....
    on Feb 4, 2010

  • Forum Post: TPS650732 RESET

    Dave Pulvermacher
    To be able to initiate a system-wide (board level) Reset (shutting down all the voltage besides Vsys and AC), is it best to that with a pushbutton switch on /PB_IN, PB_OUT, or POWER_ON? I currently have POWER_ON pulled high to Vsys so I don’t believe a pushbutton on /PB_IN will work. BUT, if...
    on Aug 25, 2010

  • Forum Post: Power generation for AM1808 by using TPS65023

    Yashpal Patel49892
    Hi, We want to use TPS65023 IC in our project for AM1808 controller. Can you advice how can I generate 1.2V at VDCDC3 output pin by using DEFDCDC3. In the datasheet mention DEFDCDC3=0 then VDCDC3=1.8V and DEFDCDC3=1 then VDCDC3=3.3V. Pls do the needful. Regards, Yashpal
    on Oct 8, 2010

  • Forum Post: TPS65251 PGOOD Question ?

    kim young hun
    Hello , Dear 1. If you use 2 chips pull-up, whar should i do ? or 1chips pull-up? I think , there is no problem because active high 2. When using an external power supply that you can use the pull-up? [The PGOOD is pulled up when all three buck converters’ outputs are more than 90...
    on Jan 13, 2011

  • Forum Post: TPS65232 Question ?

    kim young hun
    Hello Dear 1. what is the minimum voltage for BUCK1 ? datasheet : 3.3V(min), 6.1V(max) 2. why is the differnet EVM reference and datasheet ? 3. 1.8V output from BUCK1 possible
    on Jan 18, 2011

  • Forum Post: TPS65023 thermal shutdown and hysteresis value range

    Jerel Xu
    From TPS65023 datasheet page (9), I can get thermal shutdown and hysteresis typical value,what is their range?
    on Jan 24, 2011

  • Forum Post: TPS65023 DEFDCDC1/2/3 pin higl level voltage

    Jerel Xu
    From datasheet page (9), TPS65023 DEFDCDC1/2/3 pin VIH range is from 1.3V to Vcc, customer want to know if DEFDCDC/1/2/3 can be tied to another power rail which is different from VCC? For example, Vcc is 4.2V input, TPS65023 DEFDCDC1/2/3 pin is tied to 2.5V or 6V?
    on Jan 24, 2011

  • Forum Post: TPS65023 max TRESPWRON external capacitor

    Jerel Xu
    Customer want to know what is the max extermal capacitor value and decide what is max delay time?
    on Jan 24, 2011

  • Forum Post: TPS65023 PCB ground layout

    Jerel Xu
    For TPS65023, there are several kinds of Ground: (1)thermal power pad(2)AGND1,AGND2(3)PGND1,PGND2,PGND3(4)input and output capacitor Ground. I recommend the following layout,do you have other recommendation? (1)For the whole board,there will have one layer Ground plane (2) thermal power pad...
    on Jan 25, 2011

  • Forum Post: TPS65023 power down question

    Jerel Xu
    From TPS65023 Figure 28, when TPS65023 powers down, although Vcc input voltage is higher than UVLO(2.35V),DCDCx_EN and LDO_EN satrt to become low,can you tell me which factor causes this phenomenon?
    on Jan 25, 2011

  • Forum Post: Re: TPS65023 PCB ground layout

    Daniel Acevedo
    Jarel, Yes, this is the correct layout recommendation for the grounds on the TPS65023. Additionally, we suggest connecting AGND1 and AGND2 under the IC.
    on Jan 25, 2011

  • Forum Post: TPS65023 junction temperature

    Jerel Xu
    TPS65023 thermal shutdown is 160 Celsius degree,datasheet max junction temperature is 125 Celsius degree, if TPS65023 operates between 125 and 160, is it ok? is tps65023 reliability affected?
    on Jan 26, 2011

  • Forum Post: Re: TPS65023 DC and LDO output max capacitance load

    Jerel Xu
    No specific input and output value,we can consider the whole input and output vlaues.
    on Apr 13, 2011

  • Wiki Page: TPS65030 TEST SRP

    Daniel Acevedo
    Q: TPS65030 TEST SRP by 1627563 Hi, This is regarding the Power management IC for USB - TPS65030. I am not going to use the Test SRP function so can i leave the pin floating for this? Regards, Ankit Agrawal A: Re: TPS65030 SRP by 1129650 When not in test mode, the TEST SRP pin...
    on Apr 14, 2011

  • Forum Post: Re: TPS65023 L1/L2/L2 output voltage 1.3V,DEFDCDCx connect a resistor divider between VDCDCx and GND?

    ben zhan
    Hi,Daniel: Thanks for your reply; not only R1+R2 must be kept in 1M range, but also R2 must be less than R1,because V(DEFDCDCx) = 0.6 V Vout = VDEFDCDCx *((R1+R2)/R2) , am I right? Thanks!
    on Jun 8, 2011

  • Forum Post: Re: omapl138 core voltage 1.3V at 456MHz

    ben zhan
    Daniel, Thanks for your reply; I will use TPS65023 to solve the problem, The TPS65023 DCDC1 can output a range of 0.6V to VINDCDCx by connect a resistor divider between VDCDCx and GND. I check omapl138 datasheet ,only core voltage suppply must be 1.3V at 456MHz, other devices on chip just 1.2V , so...
    on Jun 9, 2011

  • Forum Post: Re: omapl138 core voltage 1.3V at 456MHz

    ben zhan
    Daniel, Thanks, Yes, I was referring to RVDD,PLL0_VDDA,PLL1_VDDA,SATA_VDD,USB_CVDD,USB0_VDDA12 and RTC_CVDD at 1.3V .
    on Jun 10, 2011

  • Forum Post: TPS65251 not working

    Andrea Pastega66071
    Hello. We are developing a new application where the TPS65251 is used to generate respectively 1.8V, 3.3V and 1.2V using DC/DC 1, 2 and 3. The product is powered at 12V. While 1.8V and 1.2V (DCDC number 1 and 3) seem to work good by quick tests, the 3.3V section has big problems; 3 of 5 prototipe...
    on Jun 16, 2011

  • Wiki Page: TPS65835 Support

    Daniel Acevedo
    For TPS65835 applications support, please visit the E2E PMU Forums at: http://e2e.ti.com/support/power_management/pmu/default.aspx
    on Jul 28, 2011

  • Wiki Page: TPS65735 Support

    Daniel Acevedo
    For TPS65735 applications support, please visit the E2E PMU Forums at: http://e2e.ti.com/support/power_management/pmu/default.aspx
    on Jul 29, 2011

  • Wiki Page: TPS65835 - reference design

    Daniel Acevedo
    Q: TPS65835 - reference design by 1134892 Hi, Is there a TPS65835 reference design/evaluation module that can be shared with customers for helping them in the design phase? Best regards A: Re: TPS65835 - reference design by 1129650 The evaluation module design for the TPS65835 is now...
    on Aug 4, 2011

  • Forum Post: USB group address Register Access problem

    merav strassberg
    Hello, Hello, I'm trying to read VENDOR_ID_LO register, All the registers i try reading from the USB group address (0x48) are read as 0x00 and not as thier Reset Value, for example VENDOR_ID_LO supposed to be 0x51. According to TPS65930/TPS65920 OMAP™ Power - Management and System...
    on Nov 22, 2011

  • Forum Post: TPS6507x DCDCx : Internal resistor divider values

    Alexander
    Hi, I need the DCDC1 of TPS65073 at 3.3V at startup (default: 1.8V). If I use an external resistor divider (e.g. 1k5:1k8), the 1k8 resistor is in parallel to the internal resistor divider (which I can not disable, due to my microcontroller needs the 3.3V initially to be able to set the DEFDCDC1.DCDC1extadj...
    on Dec 2, 2011

  • Forum Post: TPS65910AA1RSL and TPS65910A1RSL

    jie ennamelocallanguage=杰
    I have already finished the design AM335x EVM, but I can't buy the TPS65910AA1RSL, can only buy TPS65910A1RSL. Can TPS65910A1RSL replace TPS65910AA1RSL? What is the difference between them? As TPS65910 datasheet said, TPS65910AA1RSL support AM335x, TPS65910A1RSL support AM3505, AM1806 and so...
    on Jan 5, 2012

  • Forum Post: Maximum output current of TPS65070

    Pankaj katiyar
    Hi All, I am planning to use TPS65070 to power up OMAP L138. as per there recommendation I have configured DCDC1 to 3.3v output. If I go through the datasheet it list two possible current paramtere 1. Minimum Output current which is 600 mA This is must drain current to have good load regulation...
    on Feb 28, 2012
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