尊敬的各位大师,我的100W反激输出纹波出现过高的开关尖峰毛刺该怎么拌?

尊敬的各位大师,属下不才,最近在开发我的第一款AC/DC产品 -----工业仪器的100W-adapter时(20V/5A),在18AWG/1M长的DC输出线端测得满载效率为87%, 110-260Vac电压范围内,功率因数均大于0.98.可发难的是输出电压纹波上出现了过高的开关高峰毛刺,最大处达到1000多个mV.我对反馈环的补偿电路;RCD吸收嵌位电路;功率整流PN结的RC缓冲支路;输出滤波电容ESR等进行多次调整;同时也对变压器在安全的磁感强度0.24T和占空比0.45的范围内进行匝比调整,可一月来收效甚微,或许是我的调试方法有误,但月多以来,,确实已技穷,还望各位电源大师能指点迷津,在此感激各位了.(由于之前一直从事低压的DC/DC电路和便携式产品的电池线路板研发,所以在AC/DC方面还希望各位大师能指点迷津).
以下是相关波形图
1,PFC之MOS-D极斩波波形,2,PFC输出纹波,3,原级MOS-D极波形,4原级MOS-Id电流波形,5副边绕组感应脉冲,6,整流管输出脚纹波,7,整流管输出脚纹波,8,DC输出线端头纹波,9-10,SCH and PCB.
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