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TINA-TI仿真软件遇到难题

Other Parts Discussed in Thread: TPS54331

刚使用TINA软件,遇到几个问题,请大家指点:
1. TINA使用电源芯片TPS54331设计的原理图仿真,输出电压显示-3.69E-21V,怎么转换为输出显示3.3V ?
如下图:
2. 下面的TINA文件,用Analysis/AC Analysis/Calculate nodal voltages命令,不能显示输出电压3.3V,
使用命令Analysis/Transient瞬态仿真,SW点没有PWM波形,Vout也没有3.3V输出波形,
请帮助分析原因,谢谢!
3. 原仿真文件无法上传,请添加我QQ号 3081904685。