| 一种新型的低纹波开关电源 |
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| 引用本文： | 高利兵. 一种新型的低纹波开关电源[J]. 电子工程师, 2004, 30(8): 25-27 |
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| 作者姓名： | 高利兵 |
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| 作者单位： | 南京电子技术研究所,江苏省南京市,210013 |
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| 摘 要： | 传统开关电源具有输出纹波大、辐射干扰大等缺点,应用场合受到限制.文中分析了传统开关电源输出纹波的产生机理,介绍了斜波驱动方式的优点和新型电源专用集成电路LT1533的工作原理,给出了非隔离式24 V输入,5V、1A输出的推挽变换器设计实例.试验结果表明输出纹波降低到小于2 mV(峰-峰值).
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| 关 键 词： | 开关电源 低纹波 斜波控制 驱动电流 驱动电压 |
| 修稿时间： | 2004-06-01 |
A New Switching Power Supply with Low Output Ripple |
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| Gao Libing. A New Switching Power Supply with Low Output Ripple[J]. Electronic Engineer, 2004, 30(8): 25-27 |
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| Authors: | Gao Libing |
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| Abstract: | Classical switching power supply has some disadvantages such as high output noise ripple and EMI. So its applications are limited. This paper analyzes the mechanism of producing output noise ripple in classical switching power supply. The advantage of slew driver and working principle of LT1533 is introduced. It presents the solution to problems and typical circuits for application. Experimental results show that output noise ripple is reduced to less than 2 mV(P-P). |
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| Keywords: | switching power supply low ripple slew control drive current drive voltage |
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