請問一下做PFC的大大,電阻性負載 vs. 定功率負載兩者有何不同???
為何這兩個case底下,則電壓迴路的轉移函數會不一樣???
在L6561的AN1089中(p3~p4)有一段話:
If the load is purely resistive(or equivalent to a resistor, like in the case of a lamp ballast circuit), the AC load resistance equals Ro.
In case the PFC preregulator provides a DC bus supplying a downstream switching converter, the load should be regarded as a "constant power" load rather than a resistor.
Why??? 希望知道的人可以分享一下; 還有若是輸出負載是馬達的話,那算是 resistive load 還是 constant power load??
