Non-Isolated DC/DC

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Non-Isolated DC/DC

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Related Posts

  • Forum Post: Fixed voltage regulator(are external L and C necessary for device to work)

    Richard Do
    Hi all, I just have a simple questions. I am using TPS62203, which is a fixed voltage regulator of 3.3V. In the datasheet, I am supposedly to use some external capacitors and an inductor with the chip. I was wondering if it is necessary to use them. Please let me know. Thanks!!!
    on Mar 19, 2009

  • 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: Boost convertor TPS40210

    Sunil K Valsan
    Hi I Want to use TPS40210 for some boost power supply. I got a boost converter designed using SwitcherPro & device TPS40210 for 13-11V to 48V @ 1A boost converter. The out put is not boosted but input - diode drop. On checking The frequency at RC pin (1) is found to be about 480Khz and...
    on Mar 11, 2010

  • Forum Post: TPS61026 boot up problem

    John Li47269
    (Please visit the site to view this file) HI I am using TPS61026, BQ24070 and BQ27501 to build my Battery management circuit. My AC-DC is 5V 2A, the battery is 3.7V Lithium Ion Battery 2250mAH. The input of TPS61026 is 4.4V and output is 5V. My load is an ARM...
    on Apr 9, 2010

  • Wiki Page: TPS61026 boot up problem

    Michael Day
    Q: TPS61026 boot up problem by 1419131 (Please visit the site to view this file)HI I am using TPS61026, BQ24070 and BQ27501 to build my Battery management circuit. My AC-DC is 5V 2A, the battery is 3.7V Lithium Ion Battery 2250mAH. The input of TPS61026 is 4.4V and output is 5V. My load is an...
    on Apr 12, 2010

  • Forum Post: TPS63020 operation at low Vin

    Greg Dettro
    We have a customer who wants to design with the TPS63020 with the following requirements: Vin 1.8V to 5.0V Vout 1.2V Iout required: 6mA to 800mA Iout desired “headroom” up to 1.6A (2 times their typical Iout required) With the possible low Vin of 1.8V, SwitcherPro will not...
    on May 25, 2010

  • Forum Post: TPS63000 Getting hot and consuming a lot more power, but still working

    Klaas Jan Wiersma
    In an application for a servo amplifier, we are using the TPS63000 to create 5Vdc out of a 3.5Vdc supply. On our proto board the circuit worked fine, also some of the series production boards work fine. But it seems that on 40% of the series production boards the TPS63000 gets defective. Most of the...
    on Jun 18, 2010

  • Forum Post: Re: +/- Output Power supply design help

    David Poston
    Hey Kyle! I'm a little new to power supply design myself! I've been doing it the "old school" way...I have some old paperback books about power supply design copyrighted in the 1960's. They show several high voltage supplies for running vacuum tubes and they even have some with...
    on Aug 10, 2010

  • Forum Post: Buck / Boost Converter Design for very high currents

    Tom64540
    Dear Sirs / Madams, We'd like to find out whether TI offers an integrated circuit that allows us to build a DC/DC converter for both directions (buck direction from 9-18V --> 24V, and Boost from 18-24V ----> 9-18V). It's an application where both sides of the converter will be battery...
    on Jan 12, 2011

  • 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: Please recommend a low cost and small size power solution for my FPGA board

    Hai Huang
    My board includes the following components: 1. Xilinx Spartan 3E FPGA: 3.3V, 2.5V and 1.2V 2. DDR SDRAM: 2.5V and 1.25V 3. OPA3693: +5V and -5V 4. TVP7002: 3.3V and 1.9V 5. LCD backlight LED driver: six serial connected LEDs (each LED requires 20mA current and 3.2V voltage) Any input...
    on Mar 11, 2011

  • Forum Post: External Current-Boost for MC33063 buck converter

    Renjith Narayanan
    Hi For my project i want to use a dc-dc converter input 24V Output 5V,1.5A I am using MC33063 with external current boost transistor (npn), is anybody worked in this circuit Also please share the critical points to be taken care Any answer in this will be appreciated With Best...
    on Apr 28, 2011

  • Forum Post: 0V on FB pin for TPS60500

    Pontus Olvebrink
    Hi I'm having some problem with the TPS60500 on my final design for a project I'm doing. I have a supply voltage of roughly 4.9V which I want to convert to approx. 3.3V and I've set the voltage divider correctly. But for some reason I get an output voltage of 4.39V and 0V at the...
    on May 13, 2011

  • Forum Post: Re: TPS54620 not stable with different load conditions.

    Nick McMilan
    Hi John, The requirements of my design does not allow me to change components. Can you please recommend one set of compensation values for my 6 conditions? Vout 2V and 5V, at Iout of 0A, 2A and 6A. When using Switcher Pro, it recommends 6 different set of compensation. When I try 2v or 5V...
    on Jun 10, 2011

  • Forum Post: tps40054 INITAL DEBUG. Unit appears to be stuck in fault condition with no load applied

    Todd Hughes
    on Jun 20, 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: TPS5410 Oscillation Issue

    Paul Larson79737
    Hello. I am designing a circuit to take 12V down to 3.3V by using a TPS5410. I am having some noise issues that I am trying to troubleshoot and cannot find the problem. I followed the datasheet to pick component values and I am getting a 1Vp-p oscillation as high as150MHz on the output. The...
    on Jul 20, 2011

  • Forum Post: Re: How to reduce Turn on time of TPS54620 buck regulator

    Mahesh Hooli
    Dear John, Thank you for the reply. I found that, it is not regulator some other (FETs) which were causing the delay. Please find the input /output waveform below,[Channel 1 is 5V input ;; Channel 2 is 4.1V output] Actually the 4.1V Li-Ion battery & Output of Buck regulator is connected...
    on Sep 23, 2011

  • Forum Post: parallel connection of TPS40120

    Deepak Bansal
    One of project needs high o/p current. So I connected three TPS40120 in parallel. As shown below: (below shown is 2 parallel DC-Dc, similarly I connected three in parallel) But when I connected them , almost all load current was taken by one TPS. After that I made connection by connecting diode...
    on Sep 23, 2011

  • Forum Post: Re: How to reduce Turn on time of TPS54620 buck regulator

    Mahesh Hooli
    Please find the schematics of the power section below, I have removed the U17 to avoid the delay. Here is the modifications done, R125 118K R117 200K R171 2.15K R170 4.7K , 1nF on C193 & C194. and 0.1uF cap parallel to R170,R161. U17 is removed. Charger is directly connected to U48.5
    on Sep 23, 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: 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: MC33063 Inverter Vout -7V, Vin 15-25V (>6V) possible?

    Staffan Bruce
    Hello, We need a voltage inverter providing -7.0V 50mA. In the datasheet for the MC33063 there is an example showing almost this, but the input voltage is limited to +6.0V. Our input will be between +15 and +25V. Is this possible? Following another thread, it seems like the important limitation...
    on Dec 7, 2011

  • Forum Post: Re: TPS62067 Pre-Biase and soft start up Question.

    Bob Lee62837
    Dear Chris Glaser Thank you very much for your answer. May I ask one more question? Will you teach me TPS60k product which Pre-biased function is in. Regard. Bob Lee
    on Dec 15, 2011
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