| 小功率开关电源的研制 |
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| 引用本文： | 于伟庆.小功率开关电源的研制[J].电源世界,2006(3):8-10,40. |
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| 作者姓名： | 于伟庆 |
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| 作者单位： | 大连理工大学电信学院自动化系 大连116024 |
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| 摘 要： | 开关电源被誉为高效节能电源,它代表着稳压电源的发展方向,现已成为稳压电源的主要产品。本文研制的开关电源主要应用NCP1200芯片来构成PWM电路。NCP1200器件是一种单片开关电源芯片,它除了一般的PWM控制功能外,还集成了过压保护、过流保护等功能。该电路可抑制各种感性负载切换或各种瞬间噪声在电路板中产生的浪涌电压和空间电磁场的干扰。
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| 关 键 词： | 单片开关电源 PWM NCP1200 EMI 浪涌电压 |
| 文章编号： | 1561-0349（2006）03-0008-03 |
| 收稿时间： | 2005-10-21 |
| 修稿时间： | 2006-01-15 |
Small Power Switch Power Supply Design |
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| Yu Weiqing.Small Power Switch Power Supply Design[J].the world of power supply,2006(3):8-10,40. |
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| Authors: | Yu Weiqing |
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| Abstract: | Switching Power Supply is regarded as high-energy efficiency supply. It stands for the development of steady supply. It has become the main product of the power supply now. The supply uses NCP1200 as PWM circuit. It is a new type of integrated chip. Except for pulse width modulator (PWM),its internal functions include start-up bias-current source,over voltage protection,over current protection. In the circuit it has suppression of Inductive Switching of other Transient Events such as Surge Voltage at the circuit board level. |
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| Keywords: | single chip switching power supply PWM NCP1200 EMI surge voltage |
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