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  • Forum Post: Re: LED Driver IC needed for demanding application

    Michael Day
    I suggest the TPS54160 EVM as a good starting point. http://focus.ti.com/docs/toolsw/folders/print/tps54160evm-535.html
    on Feb 4, 2010

  • Forum Post: TLC59108 - Output Voltage ? Leakage Current ?

    Hiroshi Hashimoto41395
    Does the output of this device allow the applied voltage up to 17V or 20V at VCC=0V? And, what is value of the output leak current at that time?
    on Feb 10, 2010

  • Forum Post: Re: TLC59108

    Hiroshi Hashimoto41395
    Thank you very much. I learnt now that the VO(MAX) SPEC of TLC59108 was meaning different from VO(MAX) SPEC of the data sheet of a standard logic product. And, I learnt that the TLC59108 is not able to using for partial power-down application. Thanks again.
    on Feb 12, 2010

  • Forum Post: Re: TLC59108 SAMPLE PROGRAM

    Hiroshi Hashimoto41395
    I understood. In other LED drivers in the past. I saw the case of not able to operation correctly with order of register setting flow. The order had not been described to the data sheet. Therefore, I wanted a standard flow of the register setting that became the most basic, the illumination pattern...
    on Feb 12, 2010

  • Forum Post: TPS65070 wLED boost connections if not used

    Vladimir Svinolobov
    Greetings. A little question about using TPS65070 wLED boost block. I don`t need it in my project, so i want to turn it off. So the question is how to do it properly. Can i just left it`s legs not connected or i must connect them to ground? Best regards, Vladimir
    on Mar 8, 2010

  • Forum Post: Re: TPS65070 wLED boost connections if not used

    Michael Day
    If the TPS65073 wLED (white light led driver) boost is not used, connect ISET1 with a 100kohm resistor to ground ISET2 with a 100kohm resistor to ground ISINK1 to ground ISINK2 to ground FB to ground L4 to ground
    on Mar 8, 2010

  • Forum Post: Re: TLC59108 SAMPLE PROGRAM

    Subodh Nijsure
    I second the request it would be nice if there was a sample or even a script that showed how to setup things, reset using standard i2c-tools (i2cset). There must be someone in TI that has already done this to test the device, no?
    on Mar 18, 2010

  • Forum Post: TPS61165 PWM control

    Shannon
    Hi, I'm using a TPS61165 to drive high brightness LEDs, and I'm not sure from the datasheet how the PWM control works. I'm hoping to flash the LEDs at a low frequency (visible to the human eye, so less than 60 Hz), and vary the dimming at the same time to create an interesting display for...
    on Mar 23, 2010

  • Forum Post: Output Current TLC59116

    Alexandre Marcotte
    I want to know if the tlc59116 have a maximum of 100 mA for each OUTPUT of 100 mA for all OUTPUT. I use 14 output lines with 20 mA leds How I can calculate the disipate power in the Rext Thank you! Sorry for my english Alexandre Marcotte Student at the University Of Sherbrooke
    on Jun 1, 2010

  • Forum Post: Re: Replace normal linear regulator with LDO

    Michael Day
    You should also consider the TL4242 for currents up to 500mA or the TLC5926 for currents up to 120mA per channel. The TLC5926 has 16 output channels that can be paralleled for a total of 1.92A. See application note SLVA346 for details on how to control the IC without a uP. Another option is the TPS54160...
    on Jul 13, 2010

  • Forum Post: LED driver to illuminate for video camera

    Elliott Johnson
    I need a LED driver that can power a sting of LEDs which will illuminate an area that can range from pitch black to well lit (LEDs off). The device will be battery powered, but due to the limitations of the camera module the control unit and camera module will have to use the same power source, that...
    on Jul 23, 2010

  • Forum Post: LED lighting for commercial appliactions

    RUJAL ANGADIA54345
    Can anyone provide complete board details of PMP4501 ref design including transformer construction, gerber layout, BOM & schematic ? The overview can be found on page no 18 of Reference Design Cookbook labeled as slyt394a.. Thanks in advance
    on Jul 31, 2010

  • Forum Post: Re: LED lighting for commercial appliactions

    RUJAL ANGADIA54345
    Here also does not contains no of turns in any of windings without which Xmer cannot be manufactured & the gerber file is not extractable.
    on Aug 2, 2010

  • Forum Post: LED lighting for FTL replacement

    RUJAL ANGADIA54345
    Hi! Do we have any reference design that can output CC of 350mA with wide output voltage range of 10 to 48V similar to PMP4501.The input voltage will be 180 to 265VAC at 50Hz.. Also suggest any modifications required in PMP4501 to halve the output current which would be more favorable.
    on Aug 2, 2010

  • Forum Post: Re: Configuring TLC59401 using FPGA

    Brigitte
    Hello Praveen, What do you mean with architecture? For a lot more technical information then in the TLC59401 product folder, please review the EVM document and the application notes you can find in the TLC5940 product folder. Maybe this helps to solve your issues. TLC5940 and TLC59401 are almost identical...
    on Aug 18, 2010

  • Forum Post: Re: searching for LED driver

    Michael Day
    The TPS61086 datasheet has good information that will help you understand the available output current at different input voltages and currents. Please refer to figure 8 and go through the datasheet design procedure. Output current is much less than the peak switch current. You need to define the input...
    on Sep 2, 2010

  • Forum Post: LED Driver for Street Light Application

    Sham Sundar
    Dear Sir, We want to manufacture LED Street Light of 24 Watts(24 LED in series), 40 Watts(40LED in series) and 60Watts(60LED in series) Power output . We Like to use Osram dragon plus LED with Forward Volltage of 3.5 and Forward Current of 350mA. Can some one provide me the design files .
    on Sep 22, 2010

  • Forum Post: TLC5941 to MPU timing madness

    Chuck Begian
    Perhaps software engineers should not be put on hardware design projects. I am at my wits' end with this thing. Here is what I am trying to do... I have 4 TLC5941s cascaded to drive a dot-matrix LED display. The data for each row of the display is shifted into the TLC5941s, latched, and then...
    on Oct 15, 2010

  • Forum Post: TPS61161 blows on LED disconnect

    G��nter Thelen-Piazzolla
    Dear sirs, I have successfully implemented the TPS61161 to drive a string of 9 backlight-LEDs, using the configuration from the datasheet. But after having built 100 units, I have 5 ones on which the TPS61161 had to be replaced (and no component else ). On two occasions the LED string FPC had been...
    on Oct 28, 2010

  • Forum Post: Re: TPS40211 blows fuse

    Peter Miller13277
    For stabilization you may want to do your initial testing with a very low bandwidth to eliminate unstable operation as a failure cause. Try changing the 750pF capacitor to 7.5nF, the 15pF capacitor to 150pF and the 27.4k resistor to 2.74k. This will reduce the gain of the loop by 20dB for stable...
    on Nov 1, 2010

  • Forum Post: TLC59116 Output current not matched (output wide open)

    joep niermeijer
    I'm using a TLC59116 in my design, but I'm running into problems. While I thought I'd had everyting correctly designed and initiated, the TLC gave me about 50 mA output instead of the 19~20 I designed for. My setup: -TLC running at 5V -Rext of 1k connected to gnd -initiated TLCs adresses...
    on Nov 16, 2010

  • Forum Post: High Brightness LED IC

    Eric DeYoung
    I'm looking to find a (switchmode) constant current source for a LED driver that will be powered off from 2 series Lithium Ion batteries. Normal input voltages will range from 7V-8.4V and the output needs to be able to source up to (and preferably slightly greater than) 1.2A with a LED voltage between...
    on Jan 7, 2011

  • Forum Post: Re: PWM and TPS40192?

    Peter Miller13277
    Danilo, As you note, the soft-start sequence for the TPS40192 is not going to support PWM dimming via the Enable pin well, however there are a couple of other possibilities: 1) Provide a pull-up on the FB pin such that the programmed LED current is 0A when the PWM circuit is LOW. This can...
    on Jan 11, 2011

  • Forum Post: Led drivers for an art project: tps61500 and tps40211

    Alexander Jenal
    Hello, I have a question concerning a led driver design for an art project. I need to drive several (76) led stripes. It is planned to switch the stripes one after another in about 20 sec. The stripes are ready-made bought from a supplier. Each stripe has an individual length and consists of several...
    on Jan 14, 2011

  • Forum Post: Re: Led drivers for an art project: tps61500 and tps40211

    Alexander Jenal
    Thank you for your reply! In order to avoid problems, I decided to use only the TPS40211. Is there a way to use the Enable and the dimming pin together with a pwm signal, so that there only three input pins per driver (vin, gnd, pwm)? I want to use five tlc59116 or similar to switch and (if needed...
    on Jan 17, 2011
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