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TPS61196只工作一次或几次后,就无法升压电压,输入24V,输出电压也只有24V,这是为什么?

Other Parts Discussed in Thread: TPS61196, TPS61196EVM-600

按照Multi-Chip Operation In Parallel搭建的LED驱动电路,上电工作1次或几次后,就无法升压,输出一直保持和输入一样24V,这是为什么?附件为原理图和相关物料配置清单,求大神指导,困扰好久了。2068.TPS61196-Calculation-Tool_2 (1).xlsx6862.tps61196背光电路.pdf