- 1
- 2
- 3
- 4
- 5
一种宽输入降压稳压电路的研究与设计
资料介绍
文章提出了一种用于大功率LED驱动芯片的宽输入电压范围降压稳压电路，由预降压电路、带隙基准电压电路和线性稳压电路组成，最高输入电压可达40V。采用CSMC0．5μm BCD工艺模型进行仿真验证。仿真结果表明：在负载电流为5mA，输入电压为6～40V时，不同工艺角下带隙基准电压和稳压输出的平均值分别为1．2064V和5．0121V，最大变化量分别为0．9mV和12．3mV。输入电压为40V，负载电流为1-100mA时，输出电压变化量约为3．3mV。在低频下稳压电路的电源抑制比大于112dB。
A step-down regulator with wide input voltage was proposed, which was used for power LED driver. This circuit consisted of pre-regulator, bandgap voltage reference and linear regulator, and the maximum input voltage could reach 40 V. The circuit was simulated based on CSMC 0.5μ~m BCD process model. The results showed that under different process corner, when the load current was 5 mA and the input voltage changed from 6 V to 40 V, the average value of the output voltage of bandgap voltage reference and step-down regulator were 1. 206 4 V and 5.012 1 V, and the biggest variation were about 0.9 mV and 12.3 mV. When the load current changed from 1 mA to 100 mA with an input voltage of 40 V, the o...
部分文件列表
| 文件名 | 大小 |
| 一种宽输入降压稳压电路的研究与设计.pdf | 268K |
全部评论(0)