何佳,张煜盛

华中科技大学

    摘要：针对电压型开关电源在燃油系统电磁阀使用中存在的问题,本文设计了新型电流型开关电源。本文比较了电流型控制器与电压型控制器的技术特点,介绍了电流型PWM控制器UC3844的工作原理及其在燃油系统电磁阀用开关电源中的应用。

    关键词： 电流型PWM;;电压型PWM;;燃油系统;;电磁阀;;开关电源

    Abstract: To prevent from the errors on the voltage-mode switching power supply for electromagnetic valve of fuel system, a new current-mode switching power supply is designed. The paper contrasts the technical characteristics of current-mode controller with those of the voltage-mode controller, introduces working principle of the current-mode PWM controller UC3844 and describes its application in electromagnetic valve power supply.

    Keywords: Current-mode PWM;Voltage-mode PWM;Fuel System;Electromagnetic Valve; Switching Power Supply

参考文献：

[1]张占松,蔡宣三.开关电源的原理与设计.电子工业出版社,1998.

[2]丁道宏.电力电子技术.航空工业出版社,1992.

[3]史平.实用电源技术手册.辽宁科学出版社,1999.