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buck-boost
Related Posts

  • Forum Post: TPS62050 Step-Down, Vin vs. Vo

    Steve P. (NY)
    Looking for clarification on subject '800mA Synchronus Step-down Converter'. I'm assuming, given that this is a switching DC/DC regulator, that (generally) the input voltage can fall below the output voltage; this would not be the case with a linear regulator. Sh.3 of the data sheet...
    on May 3, 2010

  • Forum Post: Re: TPS63010 - Is the part capable of output current 2A

    Thomas Hoffmann
    Hi Poh Leong, what you are asking is related to physics. When you operate from a voltage below you desired output voltage, than the converter operates in boost mode. Basically the current drive capability is related to the switch current inside the chip. In a simplified way think of it like POUT can...
    on Feb 11, 2011

  • Wiki Page: TPS63010 Efficiency Graph

    Daniel Acevedo
    Q: Requests the Efficiency Graph of TPS63010 by 1684384 Customer requested the efficiency graph of TPS63010 that X-axis is current, Y-axis is efficiency when VIN=4.0V and VOUT=3.3V. There is similar graph in the datasheet, but not same condition ( VIN=4.0V and VOUT=3.3V). Could you send me...
    on Jul 21, 2011

  • Wiki Page: TPS63010 vs. TPS63020 power dissipation

    Daniel Acevedo
    Q: TPS63010 vs. TPS63020 power dissipation by 1579618 Team, The TPS63010 is being used to regulate a 4.5V - 5V rail to 5V @ 1A max. The PCB is 6-layers with 2 GND planes about 3.8" x 1.5" size. The concern is with the TPS63010's ability to dissipate power which is spec'd for approximately...
    on Jul 21, 2011

  • Forum Post: Re: using TPS40170 to generate a negative 15 v

    Na Kong
    Hi Sara, You can find the app notes from the following links: http://www.ti.com/lit/an/slyt286/slyt286.pdf http://focus.ti.com/analog/docs/litabsmultiplefilelist.tsp?literatureNumber=slva257a&docCategoryId=1&familyId=64 Regards, Na
    on Sep 15, 2011

  • Forum Post: Re: using TPS40170 to generate a negative 15 v

    Na Kong
    Hi Sara, Please find the app note of Creating an Inverting Power Supply Using a Synchronous Step-Down Regulator below. http://www.ti.com/litv/pdf/slva458 Regards, Na
    on Sep 15, 2011

  • Forum Post: Re: schematic selection question : buck-boost schematic by TPS40211 for car tail LED lamp

    Na Kong
    Hi Lee, You can find the reference designes on the webpage of TPS40211. For LED driver, PMP4057 is a buck-boost and you may find more ref designes based on other topologies. Regards, Na
    on Oct 5, 2011

  • Forum Post: Re: schematic selection question : buck-boost schematic by TPS40211 for car tail LED lamp

    Na Kong
    Hi Lee, I applogize. PMP4057 is a boost too, which doesn't match the title. The attached please find another reference design of auto LED driver using buck-boost topology based on TPS40210. (Please visit the site to view this file) Regards, Na
    on Oct 6, 2011

  • Forum Post: Re: TPS40077 used in negative output up to 10A

    Richard Garvey
    Jimmy, Here is an example of a buck controller (TPS40304) with external MOSFET's used in a Buck-Boost configuration, http://www.ti.com/tool/pmp4293 . It would be very close to what you are trying to achieve. Regards, Richard.
    on Nov 9, 2011

  • Forum Post: Coin Cell Power for MSP430

    Charles Gervasi
    I have a board with an MSP430 and some LEDs. The voltage is 2.5V-3.0V. Peak current will be a max of 50mA for 50ms supplied by a supper cap. Ave current will be less b/c everything will sleep most of the time. I'm running the board with a Li coin cell. I'm trying to decide whether to use a boost...
    on Nov 17, 2011

  • Forum Post: Controller/Converter needed for High Current Application

    Scott Gauche
    Hello, Has anyone designed a high current application around the LM5118? Specs for my design are 6-32V input, 28V output, 15A max continous current, 50A 1 second peak load. Is it possible to meet these specs using this controller? Is there a better solution from TI/National for this type of application...
    on Nov 30, 2011

  • Forum Post: Designing an inverting buck-boost: 2.9Vin to -5.2Vout @ 2A min

    Mohammed Rahim
    Hello, Customer is looking for a DC-DC converter solution to generate -5.2V @ 2A min (2.5A preferred) from 2.9Vin. They want a small footprint device, so something with an integrated switch is preferable. I have looked at the slva317a and slva257a app notes, but TI does not seem to have a part that...
    on Dec 2, 2011

  • Forum Post: TPS63030 Drawing Excess Current with No Load

    Peter Smit
    In revision A of my PCB, the TPS63030 buck boost converter works just fine. In PCB revision B I am currently trying to bring up, the TPS63030 works too, but draws too much current, even with the load disconnected - three different Rev B PCBs show behave the same. The PCB layout changed a little...
    on Dec 6, 2011

  • Forum Post: TPS63020

    Olaf Ismael Gomez Pichardo
    I'm working with buck-boost converter (TPS63020), but I have problems when I have a load of 1.3 Amp, The inductor starts having vibrations, but I don´t know the reason for this issue. Features of my design: Vin = 3.8 V Vout = 5.0 V L = 2.2 uH (EPCOS B82464G4222M) Feedback resistors...
    on Dec 29, 2011

  • Forum Post: TPS63002 in parallel?

    Ahmet Serbes
    Hi all, We need Li-Ion to 5V to power up our application and we have determined to use two TPS63002 in parallel to get 5V/2A peak. We have set up a board, in which outputs of the TPS63002s are simply short-circuited. However, one of the TPS63002 starts to warm up (and more input current is drawn)...
    on Jan 10, 2012

  • Forum Post: Designing a TPS63061-based regulator (Vin = 2.5-12v, Vout = 5v/1.5A)

    Michael H
    Hi, I'm trying to design a switch mode regulator with the new TI TPS63061 buck-boost SEPIC IC. My circuit will have a Vin range of 2.5-12v (1-3 cell LiPo), which should be regulated to 5v, with a max current draw of 1.5A. Does the TPS63061 seem like a good solution? I've looked at the datasheet...
    on Feb 18, 2012

  • Forum Post: buck/boost

    eli
    Please advise recomended solution for For Vin=2.6-3.7 Vout=3.3V/0.5A Is the TPS63031,is the right device? Why I can not used the "device Quick Search" for such aplication?
    on Mar 6, 2012

  • Forum Post: TPS63030 Ripple in PS Mode

    Charles Gervasi
    How much ripple should I expect in PS mode? In the thread at this link , a user says the datasheet shows 100mV ripple in PS mode. I do not see this in the datasheet. I am seeing 100mV. I have been experimenting with my board. When I had 10uF output capacitance, I saw 200mV ripple. Going to 100uF...
    on Mar 23, 2012

  • Forum Post: Re: TPS63030 Ripple in PS Mode

    Charles Gervasi
    I have done testing on a board with only the power supply on it. Here is what I found: Quiescent current is in the 40uA range, and that appears to be the only overhead when little or no load is present at the output. Ripple = 150mV regardless of load ( < 100uA tested). Rise time is 4us regardless...
    on Mar 23, 2012

  • Forum Post: BUCK-BOOST

    eli
    Looking for buck-boost for : Vin(mini)=1.8V/2V Vin(max)=10V/12V Vout=5.6V/1.5A-2A
    on Mar 26, 2012

  • Forum Post: Re: BUCK-BOOST

    eli
    can you send recomended design
    on Mar 26, 2012

  • Forum Post: Re: BUCK-BOOST

    eli
    Needed constant 1.5A-2A to drive point of loads of 5V,-5V,1.8V and 3.3V,for 300-500MA ea.
    on Mar 26, 2012

  • Forum Post: Re: BUCK-BOOST

    eli
    Thanks for recomendation..
    on Mar 26, 2012

  • Forum Post: buck/boost DC/DC converter to maximize current output with variable voltage input and current LM5118

    Che Geiser
    I'm trying to maximize the power available from a variable speed small generator inductor. The generator puts out a steady 500mA, but the voltage will increase to meet demand, as long as the input driving the generator is great enough to meet the demand. Think a small water wheel and I want to tap...
    on Mar 31, 2012

  • Forum Post: Can TPS5450 used for buck-boost topology? Is its internal compensation technology a bottle neck?

    Yanbin Zhao92331
    I applied sample of step down converter TPS5450. I want to use it to build a positive buck-boost converter since its compensation is included inside so that less components will be used. My requirement is Vo=12VDC, max output current is 1A, Vin=9VDC~16VDC. The positive buck-boost converter works...
    on Apr 1, 2012
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