Soft start circuit with quick response characteristic
A soft-start circuit and fast-response technology, applied in electrical components, output power conversion devices, etc., can solve problems such as safety issues, long response time of system shutdown, etc., and achieve the effect of simple circuit and easy control of soft-start time
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[0022] Such as figure 2 As shown, a soft start circuit with fast response characteristics of the present invention includes a first current source I1, a second current source I2, a comparator, a capacitor C, an NMOS tube MN, a first resistor R1, a second resistor R2, and The third resistor R3; one end of the first current source I1 is connected to the power source, and the other end is grounded through the first resistor R1; the connection point of the first current source I1 and the first resistor R1 is connected to the negative input terminal of the comparator; One end of the current source I2 is connected to the power supply, and the other end is connected to the positive input of the comparator and the drain of the NMOS transistor MN; the output of the comparator is the soft start identification signal; the gate of the NMOS transistor MN is connected to the external control signal, and The source is grounded; the connection point between the second current source I2 and the...
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