Protective circuit for overvoltage and/or overcurrent protection
A technology for protecting circuits and voltages, applied to overvoltage-responsive protection, emergency protection circuit devices, circuit devices, etc., can solve unexpected problems and achieve the effect of reliable short-circuit resistance
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[0023] figure 2 An exemplary embodiment of a protective circuit according to the invention for overvoltage protection of an electronic device 200 embodied as a “high-side switch” 201 is shown. "High-side switch" 201 includes MOSFET U1, which is constructed in the same figure 1 MOSFET 106 consistent. The source-drain-line of MOSFET U1 is arranged between the first operating voltage interface UBAT12 and the device interface 202, said first operating voltage interface provides, for example, a 12-volt power supply from a DC voltage converter or a battery not shown DC voltage. Pulse signal source V2 , which here forms a switch-on signal source, switches MOSFET U1 with control voltage V1 via control position SW and ohmic voltage divider R1 , R2 , so that a switchable voltage can be provided at device interface 202 . A protective circuit 204 according to the invention is arranged between the device interface 202 and the load interface 203 , which connects the load RL to ground GN...
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