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过流保护芯片选择

Other Parts Discussed in Thread: INA128, LM5066, TL494

老师们好,最近我做一个Boost升压电路,然后电路想加一个过流保护。具体做法就是在输出端加一个0.1欧的小电阻,通过差分运放放大后用AD采集,

然后计算出负载上的电流,只是我的输出端电压有30-36V,试过INA128,可能是输入的电压太高了,128根本就不工作在线性区。

想请大家给我推荐一下,有那种芯片可以替代128的,最好是单电源供电。