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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/762518/ucc28070-115vac-low-frequency-output-voltage-ripple-after-burn-in
您好！
我们使用 UCC28070作为 PF 控制器、在发生老化后、在115Vac 低压线路上发现低频(4秒)输出电压纹波。 它在增加0.5A 负载后消失。 由于频率较低、因此不应采用突发模式。
请参阅随附的波形。 在高压线路230VAC 时、老化后无法找到低频纹波。 请告知任何可能导致该问题的参数、例如补偿环路？
