| 开关电源全波整流输出电压公式的实验验证 |
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| 引用本文： | 王亚君. 开关电源全波整流输出电压公式的实验验证[J]. 通信电源技术, 2005, 22(1): 34-36 |
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| 作者姓名： | 王亚君 |
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| 作者单位： | 辽宁工学院信息科学与工程学院,辽宁,锦州,121001 |
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| 摘 要： | 采用半桥式变换电路进行功率输出。对半桥驱动型开关电源的输出电压估算公式Uout=1n1/2n1 ton/ton toff Uin进行验证。得到实际结果值与公式值有差别．均比公式值大1．86～7．27倍。输出电压Uout除与公式中的几项因素有关外，还与负载电阻和滤波电容有关．当负载电阻较小时比较接近公式值。
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| 关 键 词： | 脉宽调制 开关电源 半桥变换 占空比 |
| 文章编号： | 1009-3664(2005)01-0034-03 |
Experimental Test of Switching Mode Power Full-wave Rectification Output Voltage Formula |
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| WANG Ya-jun. Experimental Test of Switching Mode Power Full-wave Rectification Output Voltage Formula[J]. Telecom Power Technologies, 2005, 22(1): 34-36 |
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| Authors: | WANG Ya-jun |
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| Abstract: | In order to test the estimate formula U_(out)=12n_2n_1t_(on)t_(on)+t_(off)U_(in)~()of output voltage for half-bridge driving switching mode power supply, a half-bridge alternate circuit for power output is adopted. The results show that there is difference between the actual value and formula value. The actual value is about (1.86) to (7.27) times more than formula value .The output voltage is relevant not only to several factors in the formula, but also to load resistance and filter capacitance. The actual value is close to the formula value when load resistance is smaller. |
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| Keywords: | pulse width modulation switching mode power supply half-bridge alternation duty cycle |
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