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TPS2590
Related Posts

  • Forum Post: TPS2590 Start up characteristic

    Katsunori Hayashi
    Kando-san Many thanks. I have a question about TPS2590. The question relates to "Start up characteristic". The question is follows. [Q1] When ILIM and an IFLT level were changed, the peak value and waveform of the input electric current changed. Why do you change? Please teach the...
    on Feb 6, 2010

  • Forum Post: TPS2590 un-expected current faults at levels below the 275mA set threshold

    Andre Moorman
    I'm currently trying to use the TPS2590 (3-V to 20-V High-Current Load Switch) within a design to report a current fault as well as current limit the output. EN_FALSE = driven low by a micro-controller (not seen on the attached schematic), pull up to disable device unless being driven by the microcontroller...
    on Jul 27, 2011

  • Forum Post: TPS2590 startup

    David Wende
    We are using the TPS2590 on a hot-swap board with design as follows: VIN = 12V VLIM = 34k (5.9A) VFLT = 49k (4A) CT = 1.5uA (58mS) RTRY is open EN pin is pulled to GND by 4.7k The voltage on the back-plane is decoupled by about 30 capacitors of 330uF each. The capacitance on our...
    on Jul 25, 2011

  • Forum Post: HELP WITH TPS2590 HIGH CURRENT LOAD SWITCH

    David Albert
    with the section of Datasheet for the TPS2590 Datasheet ( SLUS960B –JULY 2009–REVISED AUGUST 2010 - on PAGE 3 Section - OUT - POWER LIMIT Specification - What is this the POWER limit of??? Is it the POWER LIMIT of (Vout*Iout) or is it the limit of (Iout * RON) - I AM A LITTLE CONFUSED...
    on Nov 15, 2011

  • Forum Post: TPS2590 Iflt - Ilim spread

    Bryan Capdeville
    We are using the TPS2590 in an application where the spread between I fault and I lim needs to be as small as possible. Page 7 of the data sheet warns that Ilim needs to be larger than Iflt even considering tolerances. Do these "tolerances" include the min to max range of Ilim and Iflt on page...
    on Mar 23, 2012

  • Forum Post: RE: TPS2590 Slow Turn Off under Short Circuit

    Lance Collins
    Ct is 0.022uF. I did not try to make Ct smaller as the high current event is very fast and Ct has hardly ramped up. If you look at my previous post you will see there is a link to the schematic; it's above the picture. I've attached another picture showing the voltage on Ct. There is a big...
    on Jun 7, 2012

  • Forum Post: RE: TPS2590 Slow Turn Off under Short Circuit

    Lance Collins
    The current is measured in the wires going to the external electronic load. The original picture shows the current through the TPS2590 along with the discharge current in C470 10uF load capacitor. I ran another overload event with the 10uF cap removed and the current dropped significantly, so the 10uF...
    on Jun 11, 2012

  • Forum Post: TPS2590 Slow Turn Off under Short Circuit

    Lance Collins
    When I apply an abrupt short to the output of the TPS2590 the device is very slow in turning off which results in very high currents. The current limit level is set to 3A nominal and the peak current under a hard short is 56A. The fall time of the 12V output is on the order of 30us. Does anyone know...
    on Jun 7, 2012

  • Forum Post: TPS2590 and TPS2421-1 supply current

    Kien Dang
    I'd like to ask about the supply current of TPS2590 and TPS2421-1. According to the data sheets of the two components, the supply current of TPS2590 is 19uA at 25 F (figure 6), and TPS2421-1's is 19mA at 25F (figure 5). The difference of these two values is three order of magnitudes, which is...
    on Jan 28, 2013

  • Forum Post: TPS2590 startup bug(s)

    Phil Doberenz
    We had a situation where the TPS2590 on our board was faulting, despite that the fault current value and current limit was set high enough that it shouldn't have been a problem. What we found was happening was that the TPS2590 appears to be going into fault mode whenever it is current-limiting it's...
    on Sep 19, 2012

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