GATE DRIVE CIRCUIT
PROBLEM TO BE SOLVED: To eliminate malfunction in a gate drive circuit for driving the gate of a MOSFET. SOLUTION: A first switching circuit 40 switches between a power source voltage Vcc and a gate of a MOSFET 1. A second switching circuit 50 switches between the ground and the gate of the MOSFET 1...
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| creator | KUROSU YASUO |
| description | PROBLEM TO BE SOLVED: To eliminate malfunction in a gate drive circuit for driving the gate of a MOSFET. SOLUTION: A first switching circuit 40 switches between a power source voltage Vcc and a gate of a MOSFET 1. A second switching circuit 50 switches between the ground and the gate of the MOSFET 1. Since a diode 53 is connected between a collector of a transistor 51 in the second switching circuit 50 and the gate of the MOSFET 1; even if the MOSFET 1 is turned off and a current flows to a parasitic capacity 20 to lower a gate voltage, a parasitic transistor being parasitic on the transistor 51 does not operate and a transistor 52 can be surely turned on. COPYRIGHT: (C)2003,JPO |
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A second switching circuit 50 switches between the ground and the gate of the MOSFET 1. Since a diode 53 is connected between a collector of a transistor 51 in the second switching circuit 50 and the gate of the MOSFET 1; even if the MOSFET 1 is turned off and a current flows to a parasitic capacity 20 to lower a gate voltage, a parasitic transistor being parasitic on the transistor 51 does not operate and a transistor 52 can be surely turned on. 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| subjects | AMPLIFIERS APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERATION PULSE TECHNIQUE SEMICONDUCTOR DEVICES |
| title | GATE DRIVE CIRCUIT |
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