摘要
设计出一种PWM电流控制模式的降压型DC／DC变换器控制IC。该芯片采用0．6μmBCD工艺制程，芯片内部集成了耐压的DMOS功率开关管。芯片具有很宽的输入范围（6～23V），宽输出范围1．22-21V，工作温度范围为-40～85℃；具有可编程软启动、欠压保护、热关断等功能。这款芯片只需少量的外部元件即可实现3A的降压型的DC／DC变换．可用于分布式电源系统、电池充电器及线性稳压电源的预调节等。
In the paper, a current mode PWM DC/DC bust controller is desiged. A high - voltage DMOS power switch is integrated in the chip which is fabricated with 0. 6 μm BCD process,it is an excellent chip with a wide input voltage range（6～23 V） and a wide output voltage range（1.22 ～21 V） ,its operation temperature is --40～ 85℃ ,it is featured with programmable soft start, under voltage lockout,thermal shutdown and so on,it requires a minimum number of external components to complete 3A bust DC/DC convert. It can be used in distributed power systems, battery charger, preregulator for linear regulators.
出处
《现代电子技术》
2008年第18期4-7,共4页
Modern Electronics Technique
