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TPS543024V输入,输出电压15V、电流3A时仿真不正确

Other Parts Discussed in Thread: TPS5430

选用TPS5430做24V-15V的降压电路,用WEBENCH设计的,稳态仿真时给定负载电流3A,输出电压不正确。我在设计用WEBENCH时给定的最大输出电流是3A,数据手册上写的持续输出电流也是3A,我想问一下TPS5430这类降压芯片的输出电流会受输出电压影响吗?仿真结果错误是因为输出15V时无法达到3A吗,还是因为仿真时间过短电路还没达到稳态?望解答,谢谢