摘要
为了解决家用电器控制器反激开关电源出口地区输入电压较宽、待机功耗低、过零检测准确的应用需求,使用PI277开关电源芯片,利用反激式开关电源辅助绕组为过压检测电路及过零检测电路供电,设计一款宽输入、低功耗、过零检测较准确的反激式开关电源电路。测试结果及实际应用表明,当输入电压范围在70VAC^300VAC内,两路带载情况下,双路输出电压波动可控制在2%的范围内,纹波可控制在100mV,噪声可控制在200mV,待机功耗可有效降低0.3W左右,且过零电路受输入电压及环境的影响较小。实际应用表明,该方案可行有效。
In order to meet some special area wide input voltage range requirements of the home appliance controller,through using the auxiliary power of the flyback switching power supply to over voltage detection circuitry.Design a low standby power flyback switching power supply with input range of 70 VAC^300 VAC,The test result shows that when the input voltage range is 70 VAC^300 VAC,the two circuit output voltage fluctuation can be controlled within 2%,the ripple can be controlled at 100 mV,and the noise can be controlled at 200 mV.And the whole control system standby power can be reduced by about 0.3 W,the facts show that the design is feasible and effective.
作者
高利敏
周杰
吴仪丹
付会梅
GAO Limin;ZHOU Jie;WU Yidan;FU Huimei(Engineering Research Center for Whirlpool China co.,ltd.Hefei 230088)
出处
《家电科技》
2019年第5期112-115,共4页
Journal of Appliance Science & Technology
关键词
家用电器
宽输入
低功耗
过零检测
反激开关电源
Home appliance
Wide range
Low power consumption
Zero-Cross
Flyback switching power
