Novel circuit design for two-stage AC/DC converter to meet standby power regulations
Novel circuit design for two-stage AC/DC converter to meet standby power regulations
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DOI：
10.1049/iet-pel.2008.0190
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发表时间：
2009-11
影响因子：
2
通讯作者：
K. Y. Lee;Y. Lai
中科院分区：
文献类型：
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作者：
K. Y. Lee;Y. Lai
本研究的目的是设计和实现一个AC/DC转换器，以满足备用电源规范。辅助电路（包括启动电路）和功率因数校正（PFC）-OFF控制的设计，显着降低待机功率，以满足待机状态下的能量代码将被呈现。此外，它将被证明，这些电路不需要任何电流传感器和滞后电路来检测负载条件，这可以降低成本，并避免由电流噪声引起的误激活。转换器的规格如下：通用输入电压：90-265 V AC，50-60 Hz;输出电压：19 V DC ;输出功率：250 W;待机功率：265 V AC输入时输入功率1 W。实验结果表明，在全电压范围和满载条件下，输入功率因数大于98%。待机状态下的功耗小于规定值1 W，确认了设计和实现。
The objective of this study is to design and implement an AC/DC converter in order to meet the standby power specification. The design of auxiliary circuit (including start-up circuit) and power factor correction (PFC)-OFF control which significantly reduces the standby power to meet the energy code under standby condition will be presented. Moreover, it will be shown that these circuits do not need any current sensor and hysteresis circuit to detect the load condition, which can reduce the cost and avoid false activation caused by current noise. The specifications of the converter are as follows: universal input voltage: 90-265 V AC , 50-60 Hz; output voltage: 19 V DC ; output power: 250 W; standby power: input power 1 W at 265 V AC input. Experimental results have demonstrated that the input power factor is greater than 98% in the whole voltage range and full load condition. The power consumption under standby condition is less than the specified value, 1 W, confirming the design and implementation.