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Enrico Migliore
Enrico Migliore
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  1. E-Fuses

e-fuse is the best choice but it may be expansive in some applications. It's all integrated. You just have to short their output and then measure the chip temperature. There There won't be any thermal runaway. e-fuses are relatively new products on the market but they are not difficult to designgetting momentum.

  1. DC/DC and AC/DC converters

All DC/DC and AC/DC converters are power limited and they won't blow when you short their output. The chip temperature will stay low and there won't be any thermal runaway.

  1. BJT based power supplies

If your power supply is based on an npn BJT than it's surely power limited thanks to the SOA (Safe Operating Area) of the BJT that limits the output current once the junction temperature reaches a certain value. The problem here is that the temperature may rise up to 90 degrees and there's a concrete possibility of a thermal runaway.

  1. Current limiter circuits

    Current limiter circuits There are tons of circuits out there. Just Google "current limiter circuits" or "current limiter circuit that don't gets hot". Simulate them with LTSpice or build a prototype and measure the temperature the reach.

    There are tons of circuits out there. Just Google "current limiter circuits" or "current limiter circuit that don't gets hot".

  2. Resattable fuses or PPTC

    Simulate them with LTSpice and monitor the temperature the reach.

I quit using them back in 2000 in my projects after discovering that once tripped you have to physically disconnect the wire from the terminal block in order for them to get back to the untripped state.

They are resettable provided you physically disconnect the wire from the terminal block after tripping.

Ciao

  1. E-Fuses

e-fuse is the best choice but it may be expansive in some applications. It's all integrated. You just have to short their output then measure the chip temperature. There won't be any thermal runaway. e-fuses are relatively new products on the market but are not difficult to design.

  1. DC/DC and AC/DC converters

All DC/DC and AC/DC converters are power limited and they won't blow when you short their output. The chip temperature will stay low and there won't be any thermal runaway.

  1. BJT based power supplies

If your power supply is based on an npn BJT than it's power limited thanks to the SOA (Safe Operating Area) of the BJT that limits the output current once the junction temperature reaches a certain value. The problem here is that the temperature may rise up to 90 degrees and there's a concrete possibility of a thermal runaway.

  1. Current limiter circuits There are tons of circuits out there. Just Google "current limiter circuits" or "current limiter circuit that don't gets hot". Simulate them with LTSpice and monitor the temperature the reach.

Ciao

  1. E-Fuses

e-fuse is the best choice but it may be expansive in some applications. You just have to short their output and then measure the chip temperature. There won't be any thermal runaway. e-fuses are relatively new products on the market but they are getting momentum.

  1. DC/DC and AC/DC converters

All DC/DC and AC/DC converters are power limited and they won't blow when you short their output. The chip temperature will stay low and there won't be any thermal runaway.

  1. BJT based power supplies

If your power supply is based on an npn BJT than it's surely power limited thanks to the SOA (Safe Operating Area) of the BJT that limits the output current once the junction temperature reaches a certain value. The problem here is that the temperature may rise up to 90 degrees and there's a concrete possibility of a thermal runaway.

  1. Current limiter circuits There are tons of circuits out there. Just Google "current limiter circuits" or "current limiter circuit that don't gets hot". Simulate them with LTSpice or build a prototype and measure the temperature the reach.

  2. Resattable fuses or PPTC

I quit using them back in 2000 in my projects after discovering that once tripped you have to physically disconnect the wire from the terminal block in order for them to get back to the untripped state.

They are resettable provided you physically disconnect the wire from the terminal block after tripping.

Ciao

Source Link
Enrico Migliore
Enrico Migliore
  • 4.9k
  • 1
  • 10
  • 12

  1. E-Fuses

e-fuse is the best choice but it may be expansive in some applications. It's all integrated. You just have to short their output then measure the chip temperature. There won't be any thermal runaway. e-fuses are relatively new products on the market but are not difficult to design.

  1. DC/DC and AC/DC converters

All DC/DC and AC/DC converters are power limited and they won't blow when you short their output. The chip temperature will stay low and there won't be any thermal runaway.

  1. BJT based power supplies

If your power supply is based on an npn BJT than it's power limited thanks to the SOA (Safe Operating Area) of the BJT that limits the output current once the junction temperature reaches a certain value. The problem here is that the temperature may rise up to 90 degrees and there's a concrete possibility of a thermal runaway.

  1. Current limiter circuits There are tons of circuits out there. Just Google "current limiter circuits" or "current limiter circuit that don't gets hot". Simulate them with LTSpice and monitor the temperature the reach.

Ciao