| 一种适用于开关电源的内部供电电路设计 |
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| 引用本文： | 李涅,张晓敏,崔佳男,周泽坤,明鑫,张波.一种适用于开关电源的内部供电电路设计[J].中国集成电路,2013,22(9):36-40. |
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| 作者姓名： | 李涅 张晓敏 崔佳男 周泽坤 明鑫 张波 |
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| 作者单位： | 电子科技大学电子薄膜与集成器件国家重点实验室,四川成都,610054 |
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| 摘 要： | 本文提出了一种适用于开关电源的内部供电电路。该电路采用齐纳二极管的稳压原理,将开关电源的高输入电压稳压输出5V,供模拟模块和数字模块使用,简化了以往采用基准和低压差线性稳压器(LDO,Low Dropout Regulator)供电的设计方法。本电路基于0.35 um BCD工艺,对所设计电路进行了仿真验证。仿真结果表明,该电路在-40℃~125℃应用环境温度范围内都能够实现高精度的输出电压,具有较强的稳定性。
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| 关 键 词： | 内部电源 高输入电压 开关电源 |
Design of An Internal Power Supply Circuit for Switching Power Supply |
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| LI Nie
,
ZHANG Xiao-min
,
CUI Jia-nan
,
ZHOU Ze-kun
,
MING Xin
,
ZHANG Bo.Design of An Internal Power Supply Circuit for Switching Power Supply[J].China Integrated Circuit,2013,22(9):36-40. |
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| Authors: | LI Nie ZHANG Xiao-min CUI Jia-nan ZHOU Ze-kun MING Xin ZHANG Bo |
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| Affiliation: | (State Key Lab of Electronic Thin Films and Integrated Device, University of Electronic Science ＆ Technology of China, Chengdu 610054, China) |
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| Abstract: | A kind of internal power supply circuit applicable to switching power supply was proposed in this This circuit using the princ voltage, and then supplies ipl the of the zener diode converts the high input voltage of switching power supply e voltage to the internal analog and digital circuit. It simplifies the traditional method of using the reference and LDO to supply the power for the internal circuit. The internal power supply is simulated with a standard 0.35um BCD process. The results indicate that the circuit can realize accurate voltage within temperature range -40℃ to 150℃. paper. to 5V design |
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| Keywords: | internal power supply high input voltage switching power supply |
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