Hello E2E,
The UCC28180 has absolute maximum input voltage from -24V to 7V on ISENSE-pin.
Please let me know about reason for it should be clamp Vsense to less than 1.1V.
Regards,
ACGUY
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Hi ACGUY
thanks for choosing UCC28180.
If the voltage is lower than -1.1V, the control loop will be unstable. So need a diode to clamp the voltage to -0.438V~--1.1V.