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boost converter
Related Posts

  • Forum Post: TPS40210 output cap question

    maxthestork
    Hi All, I am using the TPS40210 in a boost app that takes a 12V battery supply and generates 30V at 2.5A to run a motor. For the output cap, it will have to abosrb some energy dumping from the motor when the motor returns energy to the power supply and the output cap also has to handle the AC...
    on Nov 11, 2009

  • Forum Post: TPS40211 datasheet, error in equation 59?

    FordFairlane
    Hello In TPS40211 datasheet (SLUS772C), in desing example 1, I think the result in Zout equation 59 on page 30 is wrong. Could anybody check this? Where could I get more information about desing example 2? I'm using TPS40211 to drive LEDs in continuous current mode. Thank you in advance
    on Jan 25, 2010

  • Forum Post: how to boost from 3V to 12 V?

    sami mkeche5
    Hi, Is it possible, to boost voltage from 3V to 12V. I will use duty cycle aqual to 0.75. So how I can choose the value of the inductor and the PWM frequency. Also is there an TI component that i can choose?
    on Feb 22, 2010

  • Forum Post: what's better to work in continue conduction mode or in discontinue conduction mode?

    sami mkeche5
    Hi, Concerned boost converter, what's better to work in continue conduction mode or in discontinue conduction mode? What are the advantges and disadvantages of each one the these two conduction modes? Thanks.
    on Feb 22, 2010

  • Forum Post: Re: how to boost from 3V to 12 V?

    Brigitte
    Hello Mr. Mkeche, There are different parts available that can be used for this purpose, dependent on the output power you need. Please have a look on the TI Power page http://power.ti.com . There you can input your requirements on the right side and search for the right part. Best regards, Brigitte
    on Feb 22, 2010

  • Forum Post: PCB for boost converter using TPS43000

    Eric M
    I'm trying to build a boost converter based on a TI application note regarding the TPS43000 chip (Application Report SLUA268, "2.5-V to 5.0-V, 600-kHz High Efficiency Synchronous Boost Converter..."). On page 7, that document shows a printed circuit board layout for the boost converter...
    on Jun 17, 2010

  • Forum Post: TPS61170 with input voltage range higher than output voltage

    john5123
    If I require an output voltage which simply needs to be at least 15V, but have an input voltage that can range from, say, 9V to 18V, would the TPS61170 in boost mode be suitable? This would avoid the extra components needed for SEPIC mode. With the output set for 15V, will it simply go out of regulation...
    on Oct 12, 2010

  • Forum Post: Using MC34063A for White LED drive of 8 strings of 3 LEDs each with brightness control

    BrandonAzbell
    The topic of using a MC34063A for LED drive has been brought up before. Certainly, the MC34063A can be used in a boost converter topology to drive a string of White LEDs. However, if it is possible to implement a brightness control with the MC34063A, how would that be done? I realize there are other...
    on Dec 24, 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

  • Forum Post: crosses for Maxim MAX629ESA & MAX766CSA

    Mike Bisch
    Simply put, I need to cross these 2 parts. What are the best equivalents?
    on Apr 7, 2011

  • Forum Post: Implementing Over-Discharge protection with TPS61027

    Alexander Becker
    Hello! I'm designing a Circuit, which is powered by 3 Ni-MH cells. To prevent over-discharging I would like the converter to disable itself when the battery voltage reaches 3.0V. Apart from a resistive divider on the LBI pin, what external circuitry would one use to achieve this?
    on May 10, 2011

  • Forum Post: TP40210 - Automotive Application - Vin = 12V, Vout = 24V, Iout = 10A?

    Edgar
    Hi I've reviewed the information in the DataSheet and done the calculations myself I've included the xls file with all the formulas, the tabs are labeled accordingly to the component that is being evaluated If you need to find any label just look under "Insert/Names/Define" or...
    on May 13, 2011

  • Forum Post: BOOST

    eli
    Do we have a boost from 2.5-3.3V to 5V/0.5A,but also has sense for 5V input (USB) to have also 5V output? (If the boost see 5V at the input,he will transfer it to the output,or will continu to set the outout to 5V).
    on May 16, 2011

  • Forum Post: Re: TPS40210: Low Current Discontinuous Design

    Na Kong
    Hi Andy, 1. Duty cycle: I think the equation (3) is not correct. It should be D = sqrt(2*(VOUT+VD-VIN)*IOUT*L*fsw/(VIN)^2), which gives 0.76 with your specifications. 2. Inductor currents: Equation 34 and 39 are for CCM. (VIN*D)/(L*fsw) will work. 3. Compenstion network: Equation 22-29 is actually...
    on Jun 17, 2011

  • Forum Post: supporting circuit for UCC39413

    Mark Arnold78985
    Dear all, I would like to characterise the working behavior of the UCC39413 voltage boost converter. I use a 0 to 5 V power supply and a triangular voltage profile to characterise the startup and shut-down behavior. But even though I variated the values of supporting capacitors and inductors, the...
    on Jul 12, 2011

  • Forum Post: Data of TPS61221/TPS61097 data sheet graphs for black box/behavioral modeling

    Mustafa Ali
    Hi, I am hoping that TI employees may be able to help me with this request. I am doing behavioral modeling (not SPICE models) of power supply subsystem for photovoltaic energy harvesting powered wireless sensors. As part of the full system model, I want to model the power transfer of characteristics...
    on Sep 27, 2011

  • Forum Post: Re: TPS40090 used as boost application

    Na Kong
    Hi, Yes, TPS40090 can be used as a multi-phase boost controller. Please refer to the reference design below. http://www.ti.com/tool/pmp2445 Regards, Na
    on Sep 30, 2011

  • Forum Post: Limiting inrush current in TPS61220 family

    Ryan Aylward
    I am testing a new design using the TPS61222 to generate 5V from a 2AA battery pack. The 5V rail is only required for a subsystem containing LEDs - the MCU runs directly off the battery. When the regulator is enabled in order to supply power to the 5V subsystem, an inrush current of up to 200mA is possible...
    on Nov 21, 2011

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

    Joseph Varghese
    DC-DC converters for pd value 1.3 to 3.9 volts input converted to -5.2 v is available in the market for Current rating of up to 69 Amperes. Assembly details come with the product. wish you well. Regards, P. Joseph V.
    on Dec 3, 2011

  • Forum Post: Re: usage of TPS61220 for charging a battery.

    jairam surya
    Yes sir the piezoelectric is unable to supply the sufficient power to drive the converter. Am able to charge a capacitor with the incoming piezoelectricity . When am connecting the charged capacitor to converter it is working fine. But when the capacitor is connected to converter and am trying to charge...
    on Dec 29, 2011

  • Forum Post: TPS61085 Voltage Drop on Load

    Kshitij Kumar
    Hello I am using TPS61085 for LCD Backlight glowing. I want to generate 12V @ 600mA on output, from 3.8V,3A lithium-ion battery. I am using the application circuit given in the datasheet of TPS61085, with a 6.8uH inductor. I am getting perfect 12V in NO LOAD condition, But as soon as i...
    on Jan 9, 2012

  • Forum Post: Re: TPS61085 Voltage Drop on Load

    Brigitte
    Hello Kshitij, For a boost converter, the output current is not the same as the switch current. Please check the application note "Basic Calculations of a Boost Converter's Power Stage" SLVA372 for the switch current you have to consider. With the above voltages and currents given...
    on Jan 10, 2012

  • Forum Post: Regarding TPS40211 tests

    Ganesamurthy
    Am assembled 2 Nos of TPS40211 EVM PCB for DC DC LED Driver and Started to test one board first I set the input Voltage12V from my LPS, i got output 55v to 65V oscillating voltage output and then i connected load 2 strings of 12 LED series (3.3V/350ma LED). I didn't get continuous output and my light...
    on Jan 13, 2012

  • Forum Post: What's the max frequency of TL5001a, and what's the min off time.

    Patrick50702
    Hi: I'd like to use the TL5001a for a VM boost controller running at 500kHz, I need around a 65% duty cycle max. Can this part do that? The datasheet doesn't seem to list a min off-time. Also, the written notes say it can go up to 500kHz, but the Rt figure (fig 5) only goes to 400kHz. Plus...
    on Jan 15, 2012

  • Forum Post: LM2733X - Feedback resistor selection.

    Warren S
    The datasheet for the LM2733X recommends that the current through the feedback network be 92uA. I am using the regulator to boost from 3.3V to 12V, and I would like to know if there are any consequences for using larger value resistors to decrease the current though those resistors while the device is...
    on Jan 20, 2012
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