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TPS40210
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  • Forum Post: Re: TPS40210 configured as isolated forward

    nancy!
    Hi Mod, The TPS40210 can be operated as an isolated forward converter, however the internal error amplifier will make the feedback process a little tricky. Typically in an isolated design customers use a TL431 shunt regualtor and opt-coupler to pass outvoltage and frequency compensation across...
    on Jul 10, 2009

  • Forum Post: Re: TPS40210 configured as isolated forward

    Peter Miller13277
    I already did it on my PCB layout... waiting for the sample IC to arrive I still have some questions. What is the practical reset ckt for the transformer? (I implimented RCD on my layout but consumes a lot of space). Is a resonant reset applicable? RCD will offer several advantages for reset. It...
    on Jul 13, 2009

  • 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: Re: TPS40210 using at ambient temperature of 115 degree Celsius

    Peter Miller13277
    The TPS40210 controller has an absolute maximum junction temperature of 150C and no over-temperature protection. The datasheet specifications are only valid for junction temperatures to 125C, so while the IC will function, some parameters may be outside their datasheet specifications.
    on Feb 10, 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: Re: TPS61087: can it be setup as a SEPIC?

    Brigitte
    Hello K, Up to now, noone built a SEPIC with TPS61087. In theory this should work very similar to the circuit in the following application report: http://www.ti.com/litv/pdf/slva337 . I wonder if it is necessary to go to a SEPIC configuration. Having a look on the input to output voltage range...
    on Mar 18, 2010

  • Forum Post: Re: TPS40210 Switch pro values

    Michael Day
    For any single set of electrical requirements, there are many ways to design a working power supply. Either design will work.
    on Mar 26, 2010

  • Forum Post: Re: TPS40210 Switch pro values

    Peter Miller13277
    Sunil, There was an error introduced into the inductor selection process for the TPS40210 model in Switcher Pro. This will be corrected in the next release of Switcher Pro. In the mean time, I recommend using the Inductor equation from the TPS40210 datasheet and replacing the Switcher Pro selected...
    on Mar 29, 2010

  • Forum Post: Re: Tps61086EVM doesn't go to 0V.

    Chris Glaser
    It is best to take the 12V directly off of the charger output. At 3V on the OUT pin and 90% efficiency, this is 4.4A average input current to the boost converter. For this much power, you need to use an external switch boost, such as the TPS40210. If you can break up the 12V into two 0.5A pieces, then...
    on Apr 16, 2010

  • Forum Post: Re: TPS40210

    Peter Miller13277
    Henry, Yes, these components are intended for a snubber circuit, however they are not being calculated, as a snubbers values are driven by board parasitics as much as any component value. I am not sure why 0-ohms is selected there. Start with a value of 10 Ohms. for some more on snubbers review...
    on May 20, 2010

  • Forum Post: Re: How does over current circuit work in the TPS40210?

    Peter Miller13277
    Patrick, I am verifying with the IC designer whether the controller has a fault de-glitch counter or not. I do not believe it does, but want to confirm for certain. If the device does have a de-glitch counter it is either 3 or 7 cycles. Most likely what you are observing is an unintentional affect...
    on May 25, 2010

  • Forum Post: TPS40210: Synchronizing through the RC pin

    Peter Miller13277
    I have a few questions about synchronizing the TPS40210 1. Will the edge detection circuit(which creates a 100ns pulse) work with a converter operating with a duty cycle >50%? The TPS40210 states that driving the RC pin through a diode only works when the duty cycle is <50%. Does the master...
    on Jun 1, 2010

  • Forum Post: Re: Synchronizing TPS40210

    Peter Miller13277
    I have a few questions about synchronizing the TPS40210 1. Will the edge detection circuit(which creates a 100ns pulse) work with a converter operating with a duty cycle >50%? The TPS40210 states that driving the RC pin through a diode only works when the duty cycle is <50%. Does the master...
    on Jun 1, 2010

  • Forum Post: Re: How to remove transient noise on TPS40211 ?

    Peter Miller13277
    Step 1: Check your measurement technique A significant portion of this output noise could be a result of oscilloscope probe pick-up or "ground bounce". Try using a "tip and barrel" measurement across your high frequency output capacitor (generally ceramic) One way to do this...
    on Jun 30, 2010

  • Forum Post: Re: Inverting DC-DC Converters with Negative Input Voltage and Positive Output Voltage

    Peter Miller13277
    Amit, I will need to look up the schematic, but you can use the TPS40210 and a current mirroring level-shifter for this kind of application. The basic premise is to design a boost converter using the system ground and negative input rail as the boost inputs and the positive output rail and...
    on Jul 28, 2010

  • Forum Post: Re: Inverting DC-DC Converters with Negative Input Voltage and Positive Output Voltage

    Peter Miller13277
    Here is a schematic you can base your design on. Let me know if you have any questions.
    on Jul 28, 2010

  • Forum Post: Re: TPS40210 high vout desing

    Peter Miller13277
    If you need a reference design for a specific application, please contact design services. Otherwise, please refere to the design example in the datasheet for the necessary design equations for a specific design requirement. For 5V to 70V, I would recommend a lower switching frequency (100...
    on Aug 5, 2010

  • Forum Post: TPS40210 High Voltage Output

    Taesoo Im
    I'd like to design a High Voltage Power Supply using TPS40210. Would you provide me the input 12V and output 100V/100uA reference design? Thank you.
    on Aug 23, 2010

  • Forum Post: Re: MC34063A versus TPS40210 for generating 110 vdc from an 11+ vdc inout

    Peter Miller13277
    Scott, The TPS40210 by it self is not going to have enough driver strength to effectively drive a 750mA output at 110V from a 11V input. The TPS40210's driver is limited to 500mA gate drive current and a 200V MOSFET capable of handling the more than 7.5A of switch current needed to convert...
    on Aug 25, 2010

  • Forum Post: Re: TPS40210 GDRV pin action principle

    Peter Miller13277
    Red Yen, The GDRV pin of the TPS40210 is the output of the MOSFET driver. This pin converts the internal fixed frequency current mode control PWM signal into an external, high current signal for driving an external MOSFET. The PWM of the TPS40210 controller is set HIGH when the RC clock pin...
    on Aug 25, 2010

  • Forum Post: Re: TPS40210 High Voltage Output

    Peter Miller13277
    Otherwise, there are design equations provided in the TPS40210 datasheet that will guide you through a design. One possible issue - the TPS40210 design equation for selecting the current limit resistor adds 500mA of current to the expected peak switch current to account for the additional current...
    on Sep 3, 2010

  • Forum Post: Re: TPS40200-HT what FET to use?

    Peter Miller13277
    My expertise is not in high-temperature devices or applications, but with the TPS40200 controller and the power systems it is designed to operate within, so I can offer a recommened high-temperature P-FET, I'm just not familiar enough with them, however I can address your other questions: 1...
    on Sep 15, 2010

  • Forum Post: Re: TPS40210 boost converter

    Peter Miller13277
    Klaus, Peak Current Mode Control (the style of Pulse Width Modulation used by the TPS40210 controller) compares the control voltage (COMP) to the sensed switch current, terminating the switching pulse when the sensed switching current exceeds the level programmed by the COMP voltage. It is possible...
    on Oct 5, 2010

  • Forum Post: Re: TPS40210 Design Problem for LED Backlight Power Supply

    Peter Miller13277
    Bird, First, I would recommend considering the TPS40211 controller in an LED drive configuration (controller regulates the voltage drop across a series ground resistor rather than the voltage at the top of the LED string) for an LED application. 1. This circuit cannot output 2A if the Rsns is...
    on Oct 5, 2010
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