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tps54160
Related Posts

  • Wiki Page: TPS54160 EN input protection

    Michael Day
    Q: TPS54160 EN input protection by 606719 In automotive applications the nominal 12Vin can droop to about 5V during crank-up and as high as 60V for limited periods of time. Setting the EN voltage to keep the IC working at 5V input will yield a high EN voltage value during the 60V input voltage...
    on Feb 3, 2010

  • Forum Post: Re: TPS54260DGQ drop in replacement for TPS54160DGQ?

    Chris Glaser
    Yes, they are pin for pin. But some specs are different, including current limit, the error amplifier gain, and power stage gain. The last 2 parameters will affect the compensation network response. The 40V version of either part (TPS54140, TPS54240) is a better replacement, if the customer can operate...
    on Aug 5, 2010

  • Forum Post: Issue with creating an Inverting Power Supply using the TPS54160

    Rob Mitrunen
    My customer asks: We are having problems using the TPS54160. We are using this part as per the app note SLVA317A to generate a negative voltage. We pretty much used the exact same setup as the app note with minor changes to the voltage divider to generate -15V instead of the -12V in the app note....
    on Aug 6, 2010

  • Forum Post: Re: 36V to 5V buck converter.

    Chris Glaser
    There is a power quick search located at power.ti.com that will list the ICs that meet your basic power requirements. Since your output power is fairly low, you should look into using an integrated FET solution, which would be a converter. Converters are the control circuitry, driver, and FETs packaged...
    on Nov 1, 2010

  • Forum Post: Re: TPS54140 - Lack of 1.25V voltage reference

    JohnTucker
    You are going to run into two issues here. First, regarding the EN start threshold, I believe most of the variation is at cold temperatures, but we will only guarantee the published spec limits. That particular issue was addressed in teh TPS54260 and TPS54240. If EN threshold is a big concern, then you...
    on Jan 10, 2011

  • Forum Post: TPS54160 UVLO filtering

    Maurizio6434
    TPS54160 has a programmable UVLO. I need to filter the EN pin because of a very dirty Vin, the best should be to put a small capacitor at the EN pin, but this practice is forbidden at pag. 15 of the d.s. Actually I am testing the circuit with R1=470K R2=100K and a 10nF in parallel to R1. Vin max...
    on Mar 3, 2011

  • Forum Post: Re: TPS54160 UVLO filtering

    JohnTucker
    I would suggest that it would be better to filter the input voltage to ground rather than couple the ac into EN. You will have the benefit of less noise on the VIN as well as cleaner EN. Alternately you could program the start voltage and enough hysteresis into the EN (Vstart -Vstop) so that EN is not...
    on Mar 3, 2011

  • Forum Post: Re: TPS54160 UVLO filtering

    Franco Zampicinini
    And why this r ecommendation is not present on the TPS54260, TPS54140 and TPS54240 datasheets? Is the EN internal circuit different? From the datasheets they seems identical, but only for the TPS54160 there is the note about the capacitor on the pin and the detailed description of the internal zener...
    on Mar 4, 2011

  • Forum Post: Re: TPS54160 UVLO filtering

    JohnTucker
    That is updated information. The other datasheets in that family will eventually be updated, but I do not have any schedule information regarding that.
    on Mar 4, 2011

  • Forum Post: Re: TPS54160 Switching frequency

    JohnTucker
    The 444 kHz frequency and 24 V to 1.2 V conversion wil have a nominal on time of 113 nsec. You may be running into minimum on time issues that can result in pulse skipping. Eco-mode is a low current skip mode that is triggered when COMP drops to about 500 mV. I would have to see waveforms and know more...
    on Mar 22, 2011

  • Forum Post: Re: TPS54160 Hysteresis calculation

    JohnTucker
    Vena = 1.25 V not 3 V. I get R1 =23861 and R2 = 2163 not 9100. Try that and see if it works.
    on Mar 29, 2011

  • Forum Post: Re: Gerber file of TPS54160EVM-230

    JohnTucker
    I have requested this information. It should be available in the TPS54160 product page on the web within a couple days.
    on May 2, 2011

  • Forum Post: tps54160 wrong output

    Rokos
    Hallo, i use the tps54160 for my application, the requirements are: input 47-49V and output that i want 42V. i used the SwitcherPRO Design Tool (Please visit the site to view this file) in order to designt my converter. However i take 4,9 volt on the output (without load). Some measures on the...
    on Jun 1, 2011

  • Forum Post: Re: tps54160 wrong output

    JohnTucker
    Also, you should probably measure teh PH waveform with oscope.
    on Jun 1, 2011

  • Forum Post: tps54160 output down to 1.0 volt??

    LIU HAN SHENG
    Hallo, i use the tps54160 for my application, the requirements are: Vin: 40V Vout: 5V Iout: 1.5A i used the SwitcherPRO Design Tool in order to design my converter. Design Name: Name: TPS54160 50-40V to 5V @ 1.5A. 06/27/2011 05:07:43 Part: TPS54160 VinMin: 40.000 VinMax: 50.000 Vout: 5.000 Iout...
    on Jun 27, 2011

  • Forum Post: Re: tps54160 output down to 1.0 volt??

    JohnTucker
    10 ohms across 5 V is 0.5 A. The IC should regulate within that range. I will need to see some wave forms. Be sure to include PH node,
    on Jun 27, 2011

  • Forum Post: Re: tps54160 output down to 1.0 volt??

    LIU HAN SHENG
    Hello, Now, when I parallel 10Ω(load) to output, I replaced the inductor(L1)22uH to 75uH, the output voltage can hold more than 5V, but if the inductor(L1) has a voice, the output voltage down to 0 volt, How to solve this problem? Thank you for your help!!
    on Jul 1, 2011

  • Forum Post: Re: tps54160 output down to 1.0 volt??

    LIU HAN SHENG
    I mean "if the inductor (L1) has a voice..."? is I don't know is current too large? or heavy load? or magnetic saturation? What can I do?
    on Jul 1, 2011

  • Forum Post: Re: tps54160 output down to 1.0 volt??

    LIU HAN SHENG
    My inductor p icture
    on Jul 4, 2011

  • Forum Post: Re: TPS 54160 Problem with high input voltage (> 40 V DC)

    JohnTucker
    Sounds very much like electrical overstress due to over voltage. You will probably need to instal those protective circuits. Try that and let me know if you still have issues.
    on Aug 11, 2011

  • Forum Post: Re: TPS 54160 Problem with high input voltage (> 40 V DC)

    JohnTucker
    What about the transient protection and other filters? Did you try them? For charging the output capacitor, the internal current limit of the TPS54160 will limit that current already. I suspect that the 4.7 ohm is damping out the input voltage spike not limiting the inrush current. If that is teh case...
    on Aug 11, 2011

  • Forum Post: Re: TPS 54160 Problem with high input voltage (> 40 V DC)

    JohnTucker
    Well you still have to take precautions if you are hot plugging. 2 X 42 = 84 V which is above the abs max for theTPS54160.
    on Aug 11, 2011

  • Forum Post: Re: TPS 54160 Problem with high input voltage (> 40 V DC)

    JohnTucker
    So far as I know, the TPS54160 should operate normally over the long term if the input voltage is below 60V. This device has been in production for quite some time now. I am not aware of any particular failure modes related to operation at high input voltage but still within spec. On possibility is excessive...
    on Aug 15, 2011

  • Forum Post: Re: TPS 54160 Problem with high input voltage (> 40 V DC)

    JohnTucker
    These devices are rated to have some short duration negative voltage transients (<10 nsec). You have to be very careful about the measurement. Any length of ground lead will cause the negative excursion to seem larger than it really is. To accurately measure you need to use the "tip and ring"...
    on Aug 17, 2011

  • Forum Post: Re: TPS54160 EN pin current

    Anthony Fagnani
    Hi Davide, I do not have any of the info you requested available at the moment but I will let you know if I can dig some up. I believe the trouble your having is due to the variation in the EN voltage threshold. On the data sheet it shows the EN threshold can be as high as 1.55V. If you rearrange equation...
    on Sep 12, 2011
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