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watchdog
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  • Forum Post: TPS3110 - Can I disable the watchdog function for the TPS3110?

    Leslie Chataway
    Question/Problem: Can I disable the watchdog function for the TPS3110? Answer: No, WDI must be pulsed for proper operation.
    on Aug 25, 2008

  • Wiki Page: TPS3820 watchdog question

    Michael Day
    Q: TPS3820 watchdog question by 313626 Questions/Problem: When using the TPS3820, what happens if the WDI is active while on both transitions of the WDI input? Answer: The RESET is latched low until WDI stops transitioning.
    on Oct 18, 2010

  • Forum Post: TPS3828-33 (etc) datasheet: decoupling WDI with an N-channel FET

    Steve Fairhead
    Seems to me the datasheet is all kinds of wrong with respect to this FET. As drawn, I just can't see how it could work. The FET source is connected to the WDI pin, while the gate is driven by /RESET (so that the FET is off in RESET). Finally the watchdog kick signal is applied to the drain. For...
    on Feb 3, 2011

  • Wiki Page: TPS3828-33 watchdog failed

    Michael Day
    Q: TPS3828-33 watchdog failed by 1170817 Hi, I have a customer using the TPS3828-33 and he have a problem that the reset is not activated when the WDI pin is LOW. There are two cases: 1. If WDI stops toggle and stays HIGH then RESET will go active after 1,2 sec. 2. If WDI stops toggle...
    on Mar 9, 2011

  • Wiki Page: TPS3705-33D Watchdog timer operation.

    Michael Day
    Q: TPS3705-33D Watchdog timer operation. by 1621419 My customer is using TPS3705-33D supervisory IC. Our website claims it is a pin for pin equivalent to the Maxim DS1706SESA. Maxim's web sit also states that their part is pin for pin equivalent to this TI part. On the TPS3705-33D, when the watchdog...
    on Mar 22, 2011

  • Forum Post: Re: TPS3820 -50 Watchdog Control

    Michael Day
    The datasheet's timing diagram provides some of the data you need. It shows that you must toggle the WDI input continuously to keep the /RESET signal from going active. If the WDI signal is not toggled within tt(out), /RESET goes low. The tt(out) values for the different ICs are specified in the...
    on Jul 28, 2011

  • Forum Post: Re: TPS3820 -50 Watchdog Control

    Michael Day
    As long as you toggle the WDI low to high or high to low within the Ttout time specified in the datasheet, the TPS3820 will operate properly without generating an active low /RESET signal. If you wait longer than Ttout, the /RESET output will go low.
    on Aug 1, 2011

  • Wiki Page: TPS386000 - can you program the watchdog timeout?

    Chris Glaser
    Q: Prog watchdog on TPS386000 ? by 572396 Is it possible to program watchdog duration of tps386000 (I would like 10ms and 100ms).It seems to be fixed at 610ms according page 15 of DS Any idea/trick with Voltage 1 tracking ? A: Re: Prog watchdog on TPS386000 ? by 10449 The TPS386000 watchdog...
    on Sep 12, 2011

  • Forum Post: Re: Wdi decoupling in TPS3823-33

    Michael Day
    I assume you are asking about the wording in the Description paragraph on page two of the datasheet. This means that you can NOT apply a changing WDI signal to the TPS3820 if the IC is in reset. You must disconnect the WDI signal to the IC when /RESET is low. If you apply a changing WDI signal when ...
    on Nov 15, 2011

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