论文部分内容阅读
提出了一种新型的适用于DC-DC变换器的混合式数字脉宽调制器.该脉宽调制器基于混合环路振荡器/计数器的结构.与已有的延迟线/计数器结构相比,由于该数字脉宽调制器采用了温度/工艺补偿技术和一种新型的数字控制器,使其不仅可为DC-DC变换器提供一个不随温度/工艺角变化的时钟,而且可以工作在更高的时钟频率,适用于高频应用场合.后仿结果表明该混合式数字脉宽调制器工作的时钟频率可达到156.9 MHz ,并且在0 ～100℃的温度范围内及所有工艺角下的最大偏移只有±9.4 %.
A new type of hybrid digital pulse width modulator suitable for DC-DC converter is proposed.The pulse-width modulator is based on the structure of hybrid loop oscillator / counter.Compared with the existing delay line / counter structure, Because of its temperature / process compensation and a new digital controller, the digital pulse-width modulator not only provides a DC-DC converter with a clock that does not vary with temperature / process angle but can operate at higher Of the clock frequency for high frequency applications.After imitation results show that the hybrid digital pulse width modulator clock frequency up to 156.9 MHz, and in the temperature range of 0 ~ 100 ℃ and the maximum deviation of all process corners Move only ± 9.4%.