摘要
提出了一种利用BUCK变换器的警报器用大功率脉冲功率放大器,这种脉冲功率放大器采用BUCK变换器将输入电压连续改变到1.2~30 V后,提供给自举方式的脉冲功率驱动级,从而实现连续调节音量,可输出50 W以上的功率且效率可达90%以上。利用这种方式可避免使用价格昂贵的D类放大器,整体电路简单、工作稳定、维护简单,可大幅降低成本,提高生产能力和产品的竞争能力。
the pulse power Put forward a way to use the alarm based on BUCK converter with high amplifier adopts the BUCK converter, continuously changing the input power pulse power amplifier, voltage to 1.2 - 30 V, then provided to the pulse power driver stage by bootstrap mode, so as to realize the volume is continuously adjusted. The power can output more than 50 W and the efficiency can reach above 90%. Using this approach can avoid to use the expensive class of D - amplifier, the whole circuit is simple, stable and easy maintenance, can greatly reduce the cost and improve the production capacity and product competition ability.
出处
《电子科技》
2017年第8期162-164,168,共4页
Electronic Science and Technology
