DRIVER CIRCUIT WITH PRE-SLEWING CIRCUIT FOR IMPROVED SLEW RATE CONTROL

PROBLEM TO BE SOLVED: To improve a driver circuit operated with a charge pump voltage higher than that of a power unit. SOLUTION: A pre-slewing circuit 72 made up of a bipolar transistor and a CMOS transistor is provided to reduce a gate voltage of a power unit at a power stage. The gate voltage is...

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Bibliographische Detailangaben
Hauptverfasser:	COLLI GIANLUCA, BRAMBILLA MASSIMILIANO
Format:	Patent
Sprache:	eng
Schlagworte:	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 ELECTRONIC CIRCUITRY CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PULSE TECHNIQUE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve a driver circuit operated with a charge pump voltage higher than that of a power unit. SOLUTION: A pre-slewing circuit 72 made up of a bipolar transistor and a CMOS transistor is provided to reduce a gate voltage of a power unit at a power stage. The gate voltage is reduced by the pre-slewing circuit 72 to a lower level enough to start a change in output voltage. The combination of the bipolar transistor and the CMOS transistor offers enough continuity, good inner separation, and high integration provided easily in a small chip area. As a result, good characteristics is realized for a high-performance integrated driver circuit 14.