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LM61460-Q1: 用Psipice for TI仿真时SW节点无波形

Part Number: LM61460-Q1

用下图模型进行电源仿真,用开关模拟抛负载性能,具体设置为:前6ms负载维持6A,6ms-8ms空载,8ms之后负载6A,为什么6ms-8ms的SW节点没有任何波形?

模型:

仿真设置:

仿真结果