| 摘要 |
<p>A timing pulse generator includes a bootstrap capacitor (CB). This capacitor having been brought into a discharged state in advance in charged up when one terminal is fed with an input pulse ( phi IN) through a transmission gate MOSFET (Q5). A boosting pulse to be applied to the other terminal of the capacitor is generated at a suitable timing to generate a boosted voltage. A voltage detector including MOSFETs (Q6- Q10) is provided for detecting the charging voltage level of the capacitor. The timing at which the boosting pulse is generated is controlled by the voltage detector, thereby minimising the effect of input pulse level, temperature and other changes in component characteristics on the timing of the output pulse, ensuring reliable operation and minimising switching time and heavy current consumption resulting therefrom. <IMAGE></p> |
