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LM3447: FCC传导灌胶后超标,调光器接入功率衰减严重

Part Number: LM3447
我们设计的方案是LED 筒射灯,设计输入功率38W,120Vac 60Hz,相位调光,遇到问题详细描述如下:
1. FCC问题,多钟方案调试不能通过,未灌胶状态能够达到标准要求,一旦灌胶后超标5dB;
2. 接入调光器后功率衰减到29W,需要支持如何解决这个问题