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TPS65023
Related Posts

  • Forum Post: TPS65023: Low_Bat Comparator freely usable?

    wsw
    Hi there, am I reading the '65023 datasheet right that the LOW_BAT comparator is quasi a stand alone device, powered by the Vmax switch and simply comparing the LOWBAT_SNS pin to an internal 1V reference (powered by what?), resulting in the LOWBATn signal. IOW: am I free to use this comparator...
    on Aug 20, 2009

  • Forum Post: Re: TPS65023 : Orcad schematic symbol and PCB footprint

    Michael Day
    Please click on "symbols and footprints" in the TPS65023 tool folder. All available symbols and footprints are shown in this location. Additional symbols and footprints can be requested in the development tools/analog elab forum http://e2e.ti.com/support/development_tools/analog_elab_and_tools...
    on Feb 22, 2010

  • Forum Post: TPS65023 I2C inteface not used

    ChristianHoefling
    Question: How should we connect the I2C lines of the TPS65023 if the I2C interafce is not used in our application?
    on Mar 30, 2010

  • Forum Post: TPS65023 - What does MR means?

    avi cohen
    HI All, I read in the data sheet of the TPS65023 (power managment IC) the following sentence: "The total resistance (R1+R2) of the voltage divider should be kept in the 1-MR range in order to maintain a high efficiency at light load". My question is what does MR means? thanks for...
    on Jul 1, 2010

  • Forum Post: Re: TPS65023 - What does MR means?

    TI Kevin
    Hi Avi, MR in this context means Mega Ohm (the letter R is used for the Ohm sign Ω ). I hope this helps. Best Regards, Kevin
    on Jul 2, 2010

  • Forum Post: Re: Power Management Unit suitable for TMS320DM365

    Chris Glaser
    At power.ti.com there is a processor power search. Simply find your processor and single chip solutions and/or reference designs will appear for that processor. With your high currents (in the amps), a single chip IC for all of the above is very hard to come by. I would recommend picking a smaller...
    on Jul 30, 2010

  • Forum Post: TPS65023; PFM mode, extra capacitance

    Michael Day
    When the TPS65023 opreates with light loads (<10mA) on DCDC3, does increasing output capacitance force converter into PWM mode, reducing overall ripple voltage?
    on Aug 20, 2010

  • Forum Post: Re: TPS65023; PFM mode, extra capacitance

    Michael Day
    2. For light loads (<10mA) the DCDC converter will not operate in PWM mode by adding additional output capacitance. The decision if the converter operates in PWM or PFM mode is done on the average inductor current. Please have a look at equations (1) and (2) on page 22 of the TPS65023 datsheet...
    on Aug 20, 2010

  • Wiki Page: TPS65023 - PWRFAIL_SNS and LOWBAT_SNS input current spec

    Michael Day
    Q: TPS65023 - PWRFAIL_SNS and LOWBAT_SNS input current spec by 605709 Hello, Customer is using TPS65023 DCDC enables with RC to increase delay for power supply sequencing. 1. What is typical input current for PWRFAIL_SNS and LOWBAT_SNS? A: Re: TPS65023 by 1169162 Hello Keith, 1....
    on Aug 20, 2010

  • Forum Post: The output resistance of TPS65023

    Ericsbear
    I have designed a PCB barod according with the schematics in Datasheet of TPS65023; Now, I find the resistance of every output is below 50 ou(resistance between Lx and PGND) and the input current of the chip rises to 1.17A immediately when the out power switch puts on and the output load of TPS 65023...
    on Aug 27, 2010

  • Forum Post: Re: The output resistance of TPS 65023

    Michael Day
    Are you saying you measure 50 ohms from Lx to ground? This value seems very low and could be the problem in your circuit. Does this problem happen on all your boards or just one? Can you remove the TPS65023 IC and measure the resistanc to see if the problem is a damaged IC or maybe a problem with layout...
    on Aug 27, 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: Re: Power generation for AM1808 by using TPS65023

    Michael Day
    The "Step Down Converters .... " paragraph on page 21 of the TPS65023 data sheet provides a good explanation of the possible output voltages and how to achieve these output voltages. VDCDC3 can be set to 1.2V by connecting a resistor divider between VDCDC3 and ground with the center tap between...
    on Oct 14, 2010

  • 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: Re: TPS65023 thermal shutdown and hysteresis value range

    Michael Day
    The TPS65023 thermal shutdown and hysteresis is not tested in production, so the value in the datasheet is only a typical. You can expect the shutdown to vary as much as +/- 15 deg C and expect the hysteresis to vary +/- 3 deg C.
    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 power down question

    Daniel Acevedo
    DCDCx_EN and LDO_EN start to go low with VCC because they are all connected together externally on the board.
    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: Re: TPS65023 DEFDCDC1/2/3 pin higl level voltage

    Daniel Acevedo
    If you are using the one of the fixed output voltage options for the DCDCx converter, you may connect DEFDCDCx to any voltage above Vih and below Vcc, the recommended operating conditions. The DEFDCDCx input should not be connected above Vcc; if so, DEFDDCDCx will draw current due to the ESD structure...
    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 power consumption on VBACKUP pin when product is OFF

    Michael Day
    I think the quiescent current specification on the TPS65023 datasheet, page 4 is what you are looking for. There will be different amounts of current consumed, depending on how the circuit is configured. The datasheet shows data for three conditions. Note that Texas Instruments has provided a TPS65023...
    on Jan 26, 2011

  • Forum Post: Re: TPS65023 junction temperature

    Michael Day
    It is NOT good to operate any IC above the absolute maximum operating conditions. Continuously operating in thermal shutdown will degrade an ICs reliability. Thermal shutdown is intended to be a function to save the IC from imediate damage if operating conditions would cause the junction temperature...
    on Jan 26, 2011

  • Forum Post: Re: TPS65023 multilayer inductor reference check for VDCDC 1 - 2 - 3

    Daniel Acevedo
    What are the output currents for the TPS65023 buck converters in your application? For most applications, I recommend using MLP2520S2R2M which has a saturation current rating of 1.72A and a DCR of 54mOhms.
    on Jan 26, 2011
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