问题可能出现在输入端的R4, 提高了输入的共模电压,您可以参见手册的Figure 9-2.Input Common-Mode Voltage vs Output Voltage at G = 1 V/V了解输入共模电压与输出电压范围的关系,也可以通过 input and output range design calculator 工具得出具体的输入电压范围。
https://www.ti.com.cn/tool/cn/download/PGA85X-INPUT-OUTPUT-RANGE-DESIGN…
Part Number: UCC28950 Hi,
I am going to design a 3kW Phase Shifted Full bridge Synchronous Rectifier (PSFSR) charger. The DC/DC converter details are given below.
The DC/DC designing details:
Power rating: 1.2kW.
Input voltages Vin =380 - 420V,
Nominal…