Need a simple DC output current limiter



Hi

I looking at having to protect an 24VDC output from overload/short
circuit. I have a design that works with a sense resistor which trips
a comparator to turn off a MOSFET, but I would like to find a method
to avoid too many parts and complexity.

There's polyswitch PPTC, but I don't like the temperature dependancy.
Are there any other options that will provide a resonable precise trip
point?

Point of Load device with this inside
Some special Reg/LDO with internal current limit
other?

Thanks

Klaus
.



Relevant Pages

  • Re: Need a simple DC output current limiter
    ... I have a design that works with a sense resistor which trips ... Use another domain or send PM.- Skjul tekst i anførselstegn - ...
    (sci.electronics.design)
  • Re: Need a simple DC output current limiter
    ... I have a design that works with a sense resistor which trips ... The brute-force method would be a LM317 with one resistor so it becomes a current source, and then let that run into thermal shutdown. ...
    (sci.electronics.design)
  • Re: Need a simple DC output current limiter
    ... I have a design that works with a sense resistor which trips ... a comparator to turn off a MOSFET, but I would like to find a method ... and allows some degree of control over the shutdown time ...
    (sci.electronics.design)
  • Re: Need a simple DC output current limiter
    ... I have a design that works with a sense resistor which trips ... ....a transistor, E-B across the series current sense resistor, the collector used to limit drive to output pass transistor: ...
    (sci.electronics.design)
  • Re: Need a simple DC output current limiter
    ... I have a design that works with a sense resistor which trips ... a comparator to turn off a MOSFET, but I would like to find a method ...
    (sci.electronics.design)