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hello I have designed a board that operates on 10v to 18v DC (2A) I need somehow to protect it from reverse polarity, am thinking to use MOSFET but how I can drive the gate in 10v-18v range

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  • \$\begingroup\$ Beat me to it :) \$\endgroup\$
    – raaymaan
    Commented May 5, 2022 at 12:30
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    \$\begingroup\$ Perhaps if you cared to add a schematic or picture we could better assess the situation. I find your question a bit vague, missing details. \$\endgroup\$
    – Fred Cailloux
    Commented May 5, 2022 at 14:02

1 Answer 1

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Use a bridge rectifier, instead.

enter image description here

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    \$\begingroup\$ The single mosfet will dissipate less power than a full bridge rectifier. \$\endgroup\$
    – Aaron
    Commented May 5, 2022 at 14:27
  • \$\begingroup\$ Low Vf Schottky diodes may be used to reduce the dissipation. \$\endgroup\$
    – vu2nan
    Commented May 7, 2022 at 16:36
  • \$\begingroup\$ True, it will lessen the dissipation, but the single mosfet still wins hands down. \$\endgroup\$
    – Aaron
    Commented May 8, 2022 at 2:13

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