TPD4S311AYBFR

Overview

The TPD4S311AYBFR is a USB Type-C port protection IC providing short-to-VBUS overvoltage and IEC ESD protection. It features four channels for CC1, CC2, SBU1, and SBU2 pins with 24-VDC tolerance. The device integrates high-voltage FETs that isolate the system when voltage exceeds thresholds (6.0 V typical on CC, 4.5 V on SBU). It supports VCONN power delivery up to 600 mA at TJ ≤ 105°C. Electrical characteristics include an OVP response time of 70 ns for CC pins and 80 ns for SBU pins. The component operates within a 2.7-V to 4.5-V supply range and is housed in a 16-DSBGA package measuring 1.69 mm × 1.69 mm.

Feature Summary

• Four-channel overvoltage protection for CC1, CC2, SBU1, and SBU2 with 24-V tolerance
• IEC 61000-4-2 ESD protection: ±8 kV contact and ±15 kV air-gap discharge
• Integrated dead battery resistors for mobile device compatibility
• Open-drain fault reporting via FLT pin

Applications

• Desktop PC and motherboard systems
• Standard notebook PCs and Chromebooks
• Docking stations and port/cable adapters
• Smartphones

Procurement Notes

Verify the ordering suffix YBFR corresponds to the Tape & Reel packaging format. Confirm the specific revision level matches design requirements, as documentation indicates updates between revisions A, B, and C. Ensure the selected variant aligns with the required VCONN current specifications for the target application.

Selection Notes

Select this part for designs requiring integrated protection against VBUS shorts to CC and SBU lines. The TPD4S311A variant provides higher VCONN current capability (600 mA) compared to the standard TPD4S311 (400 mA). Verify thermal management capabilities, as the junction-to-ambient resistance is 84.0 °C/W in the DSBGA package. Ensure external capacitors meet the minimum voltage ratings specified for VPWR and VBIAS pins.

Part Context

The TPD4S311AYBFR belongs to the TPD4S311 family of USB Type-C port protectors manufactured by Texas Instruments. This series addresses risks from non-compliant PD adapters and mechanical connector issues. The 'A' designation denotes enhanced performance features, including increased VCONN current handling and surge protection capabilities compared to the base model.

Replacement Considerations

The TPD4S311 serves as the base model within the same family. The TPD4S311A offers identical functionality with upgraded VCONN current ratings (600 mA vs 400 mA) and lower CC on-resistance (232 mΩ vs 378 mΩ). Both share the same 16-DSBGA package footprint.