Patent ID: 11886264
Assignee: CYPRESS SEMICONDUCTOR CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 9:
10. The USB-PD IC controller of claim 9, wherein the analog detection circuit comprises:
a first comparator having the third voltage as a negative input and the voltage across the capacitor as a positive input; and
a second comparator having the voltage across the capacitor as a negative input and the first voltage as a positive input,
wherein the first voltage tracks the inverting input of the non-inverting amplifier,
wherein the third voltage tracks an output of the non-inverting amplifier,
wherein the first comparator indicates a voltage undershoot condition on the USB voltage bus power line if the third voltage drops below the voltage held by the capacitor during the hold time of the detection window,
wherein the second comparator indicates a voltage overshoot condition on the USB voltage bus power line if the first voltage exceeds the voltage held by the capacitor during the hold time of the detection window.