Other Parts Discussed in Thread: LM5116
测hi LM5116 EVM板,测试时电感会有啸叫
测试条件:输入48V;
动态负载:电流变化斜率1A/us,负载25%~75%~25%变化,即Ilow=1.25A,Ihigh=2.5A,频率1000Hz
如果增大负载变化5%~95%~5%,啸叫会更严重
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测hi LM5116 EVM板,测试时电感会有啸叫
测试条件:输入48V;
动态负载:电流变化斜率1A/us,负载25%~75%~25%变化,即Ilow=1.25A,Ihigh=2.5A,频率1000Hz
如果增大负载变化5%~95%~5%,啸叫会更严重
Hi
1.25A到2.5A动态测试有啸叫,如果直接带5A啸叫吗?
检查一下环路补偿电路有没有损坏?