NCP1365XS1GEVB 评估板旨在高效评估 NCP1365，它提供了一种新的解决方案，旨在实现通用电源反激应用中从几瓦到 20 W 的输出功率水平。由于采用了一种新颖的方法，这种新控制器无需使用次级反馈电路（通常是光耦合器和 TL431 参考），同时实现了出色的线路和负载调节。NCP1365 在高负载下以谷底锁定准谐振峰值电流模式控制模式运行，以提供高效率。当次级侧的功率开始减小时，控制器会自动调整占空比，然后在较低负载下，控制器以固定峰值电流进入脉冲频率调制，并进行谷底开关检测。这种技术允许使用微小的假负载保持输出调节。前 4 个谷底的谷底锁定可防止谷底跳跃操作，然后在较低负载下进行谷底开关可提供高效率。

The NCP1365XS1GEVB Evaluation Board is designed to efficiently evaluate the NCP1365, which offers a new solution targeting output power levels from a few watts up to 20 W in a universal-mains flyback application. Thanks to a novel method this new controller eliminates the need for a secondary feedback circuitry (typically an opto-coupler and TL431 reference) while achieving excellent line and load regulation. The NCP1365 operates in valley lockout quasi-resonant peak current mode control mode at high load to provide high efficiency. When the power on the secondary side starts to diminish, the controller automatically adjusts the duty-cycle then at lower load the controller enters in pulse frequency modulation at fixed peak current with a valley switching detection. This technique allows keeping the output regulation with tiny dummy load. Valley lockout at the first 4 valleys prevent valley jumping operation and then a valley switching at lower load provides high efficiency.