AC/DC and Isolated DC/DC Power

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AC/DC and Isolated DC/DC Power

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Power Supply
Related Posts

  • Forum Post: Isolated DC -DC Supply using uc3843

    Deepak Kashyap
    Dear Members, In one our design we need a isolated dc-dc Converter with input of 9-36VDC and isolated output 12VDC@500mA & 5VDC@300mA . I have seen it been built on uc3843 but in the appnote the transformer design is not clear , is it to be designed like two inductors kept on same core ? what...
    on Aug 6, 2011

  • Forum Post: Variable output voltage, isolated power supply design question

    zhong Huo
    Hello, I need to design a isolated, variable ouput power supply. Input voltage is 12V, output voltage is 1V to 4V, output current is 3A. Any suggestion and help is very welcome. I think the isolated transformer is very important, Where I can order it? Thank you very much. in advance. Zhong
    on Sep 9, 2011

  • Forum Post: TPS55010 failure

    Gianpietro Favaro
    Hi all, we are testing some samples of TPS55010 and we experienced some problems due to the systematic failure of low side NMOS (?). At the moment we built 7 prototypes and all failed in the same way. Is there some reason for such instability? We are using the schematic indicated in the datasheet...
    on Oct 4, 2011

  • Forum Post: UCC28070 variable output voltage

    Chris Walters
    I'm designing a PFC controller. I choose it because I'll need ~3.5kw output power and it supports running multiple controllers synchronized. I need my output voltage to be adjustable between 250-350volts, (120vac input). At first, I figured I could just adjust the feedback voltage divider to...
    on Nov 2, 2011

  • Forum Post: uc3637

    WILLIE L. MCCAIN
    hello iam working on a new design which i will be using the uc3637 as a class d amp, o i will set the device to produce two 50% duty cccle lets say at 25 khz, okay from here the two outputs will go to a half bridge driver which will be the ir 2110 are another later part for the driving og the power...
    on Nov 7, 2011

  • Forum Post: UCC35706 resonant forward convertor failure

    Sunil K Valsan
    Hi, I am Trying to make one DC to Dc convertor with UCC35706, strangely all the four devices I had is gone bad ie PIN 3 Vff shows zero Volt. The schmatic design is taken from another working design. Its resonant single switch forward convertor. Please help me to acertain if the device has gone...
    on Nov 17, 2011

  • Forum Post: Operating LM2588 at 140KHz

    Anemary Thomas
    Hello I am new to power supply design field. I am trying to operate LM2588 at 140 KHz. Can anyone please help me to find the exact Freq. Adjustment Resistor and the values for compensation components. The values given in the datasheet are for 100KHz.
    on Dec 15, 2011

  • Forum Post: +/- 400V Variable output controller

    Jameson Beebe
    Hello all, I am looking for some direction in creating a variable +/- 400V @ 10uA max output controller. Currently I have a flyback solution designed that can do it, but there are issues with the feed back voltage resolution and the way the microcontroller is managing the output voltage. It would...
    on Dec 27, 2011

  • Forum Post: LM5025

    WILLIE L. MCCAIN
    ON THIS PART IS THERE ANY PROBLEMS WITH THIS PART WORKING AT 400 HZ OUTPUT CH.A /CHB BY SETTING THE RESISTOR FROM PIN5 TO PIN 6 THIS WILL PRODUCE PWM FOR PUSH-PULL APPLICATION ARE FULL BRIDGE BY USING EXTERNAL DRIVERS LIKE THE LM5112 /LM5110
    on Apr 13, 2012

  • Forum Post: Re: LM5025

    WILLIE L. MCCAIN
    OKAY THIS WILL BE GOOD FOR THE BOOST APPLICATION 100KHZ IS GOOD FOR THAT OKAY OUTPUTS 5/6 WILL BE TIED TOGETHER WITH TWO DIODES AND INPUTED INTO A NON-INVERTING DRIVER LIKE THE LM5110 ITHINK TO DRIVE THE EXTERNAL MOSFETS, I NEED TO MAKE A BOOST POWER SUPPLY WITH 18VDC TO 33 VDC INPUT AND HAVE...
    on Apr 13, 2012

  • Forum Post: Re: LM5025

    WILLIE L. MCCAIN
    YES I NEED TO DESIGH A STATIC INVERTER AT 400 HZ WITH 18VDC -33VDC MAX. I WILL BE DRIVING IN PUSH-PULL FOR THE LOW POWER UNITS AND FULL BRIDGE FOR THE HIGH POWER APPLICATION I NEED A CONTROLLER THAT CAN WORK DOWN IN THE 800HZ RANGE
    on Apr 13, 2012

  • Forum Post: UC3638

    WILLIE L. MCCAIN
    NEW DESIGN CLASS D POWER STAGE MODULATOR TAKE A LOOK AT THE ATTACHED DRAWING TO SEE IF I HAVE THE PINS CORRECT IF SO CALL ME 561-853-4160 (Please visit the site to view this file)
    on Apr 17, 2012

  • Forum Post: DC/DC isolated power supply

    bruno nunes
    Hi, I have a customer that has the following power supply: a symetrical one with voltage +/-60V. But he needs a symetrical supply +-15V , current rms=1A . how could I generate that voltage from +-60 V power supply? is it possible to use 2 LM5015?: 1) the first one would have Vin =60 V , e GND=0 V...
    on May 7, 2012

  • Forum Post: AC-DC Power Design Services Firm

    Jaden Ghylin102047
    Who does TI recommend for design services on high power AC-DC power supply designs? Requirements are 85-264VAC, 400-800W out at 24VDC with 85%+ efficiency. Are there a few firms that have experience with TI/Unitrode parts: UCC28070PW, UCC28950PW, etc.? -Jaden
    on Jun 21, 2012

  • Forum Post: Help with Multi-Output Power Supply Design for Portable Device

    John Ramshur
    I need help designing a mutiple output power supply for a portable device. My problem is designing a configuration for multiple output voltages with pcb size and power efficiency in mind. I need 3.3 V, +/- 1.5 V, and +/- 20 V. Below I’ve listed device info and estimated current consumption of...
    on Jan 8, 2013

  • Forum Post: Design description for application note slu660

    anjali chugh
    Hi, i want to know about slu660 , an application design for conversion of 18-30 volt input to isolated 18 v output .
    on Jan 25, 2013

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