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COMPARATOR, A/D CONVERTER, PWM SIGNAL GENERATOR, POWER SOURCE DEVICE AND POWER SOURCE CONTROLLER
COMPARATOR, A/D CONVERTER, PWM SIGNAL GENERATOR, POWER SOURCE DEVICE AND POWER SOURCE CONTROLLER
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机译:比较器,A / D转换器,PWM信号发生器,电源设备和电源控制器
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摘要
PURPOSE: To obtain a comparator, an A/D converter, a PWM signal generator, a power source device and a power source controller which have high speed and high performance and are capable of miniaturizing chips when they are incorporated into IC chips. ;CONSTITUTION: A D/A converter 21a is operated by a time division and required comparison reference voltage is supplied to chopper type comparators 5-1 and 5-2. The timing of the operation is mutually shifted by each chopper type comparator, in such a manner that comparison reference voltage is charged in an input capacitor 23a by the chopper type comparator 5-2 when a comparsion operation is performed in the chopper type comparator 5-1. Thus, a comparison can be performed at a high speed without lowering accuracy.;COPYRIGHT: (C)1996,JPO
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