README: better describe over-voltage protection
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@ -28,7 +28,10 @@ to prevent PD communication, capacitors are placed on the CC lines.
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they smooth out the 300 Kbps BMC signal used for PD communication.
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it still allows the identification of Rp, Rd, and Ra used for orientation and role detection.
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an additional circuit will cut the power when VBUS exceeds 5.5V (on either side of the PD blocker).
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additionally there is an over-voltage protection circuit.
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VBUS (on either side) is compared to a reference voltage.
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when VBUS is below 5.5V, p-channel MOSFETs are switched on, and allow VBUS going from one side to the other.
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when VBUS is above 5.5V, the p-channel MOSFETs are switched off, and prevent VBUS interconnection, cutting the power.
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warning
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=======
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