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TPS26631过流恢复问题

Other Parts Discussed in Thread: CSD19537Q3

尝试使用TPS26631的芯片,按照规格书第32页搭了个电路,设置了3A的过流值,测试的时候3A可以保护,但是将负载电流调至小于3A,却不能自动恢复。直到将负载电流调到1A左右才自动恢复,才有电压输出。请帮忙分析是什么原因导致的。根据32页的原理图,我省去了Q1,Q2,其他的配置如下:

CSD19537Q3
SMCJ36CA
BSS138
TPS26631 HTSSOP (20)* 6.50mm × 4.40mm
贴片电阻  34K 1% 0603 R3_sel
贴片电阻  12.4K 1% 0603 R2_cal
贴片电阻  787K 1% 0603 R1_cal
贴片电阻  6K 1% 0603 RLIM_cal
贴片电阻  499K 0603 R4
贴片电阻  35.64K 1% 0603 R5
贴片电容 1uf 10% 50V 0603 Cin
贴片电容 274nf 10% 50V 0603 Cdvdt
铝电解电容器EEV-FK1V102V 1000uf 20% 35V Cout