USB Type-C CC and SBU Protection IC

NX20P0407 is a single chip USB type-C port protection solution. CC1/CC2 and SBU1/SBU2 pins in system side are protected from up to 28 V short to VBUS, which pins are located right next VBUS pins.

USB Type-C allows VBUS voltage to increase up to 20 V through Power delivery protocol, the concern is that these CC1/2 and SBU1/2 pins can be shorted with VBUS when plugging out with mechanical twisted connector since Type-C connector contact pin is 25% closer to each other than prior generation connector, micro USB which most mobile devices have been using. Another concern is that moisture or fine dust may cause short to 20 V VBUS with next to pins.

NX20P0407 enables CC and SBU to be more robust in even abnormal conditions. NX20P0407 has 28 VDC tolerant on CONCC1, CONCC2, CONSBU1 and CONSBU2 pins in connector side and quickly disconnects switches if the voltage is above overvoltage threshold, CC1, CC2, SBU1 and SBU2 in system side are protected from the high voltage.

NX20P0407 integrates IEC 61000-4-2 ESD protection on CONCC1 and CONCC2, +15 KV air discharge and +8 KV contact discharge, which helps to reduce external BOM cost. NX20P0407 CONCC1 and CONCC2 pins are designed to be protected from surge up to +/- 35 V.