Infineon Technologies CYPD2803A1-09FNXIT

Overview

CYPD2803A1-09FNXIT from Infineon is a USB Type-C electronically marked cable assembly (EMCA) controller compliant with USB PD 3.1 v1.4 and USB Type-C 2.1, supporting up to 240W (48V/5A), integrated VBUS-short-protected CC/VCONN transceivers, and 47-byte programmable configuration storage for vendor/cable data.

For engineers reviewing the CYPD2803A1-09FNXIT datasheet, CYPD2803A1-09FNXIT pinout, CYPD2803A1-09FNXIT application, or CYPD2803A1-09FNXIT equivalent, key selection criteria include VCONN short-circuit protection rating (54 V), RA termination on dual VCONN pins, sleep current (1.7 mA), industrial temperature range (–40°C to +85°C), and WLCSP-9 package compatibility with high-density passive cable assemblies.

Technical Context

The CYPD2803A1-09FNXIT implements a dedicated EMCA protocol engine with hardware-level USB PD 3.1 message parsing and Type-C physical layer signaling, including integrated RA termination resistors on both VCONN1 and VCONN2 pins and active VBUS-to-CC/VCONN short protection up to 54 V.

It operates from 2.7 V–5.5 V VCONN supply, delivers regulated 1.8 V core voltage via VCCD pin (requiring external 1 µF capacitor), and supports two passive cable topologies: single-chip (one plug) or dual-chip (both plugs), with automatic VCONN-powered device selection in dual-chip mode.

Key Specifications

Pinout & Package

Package: 9-ball Wafer-Level Chip-Scale Package (WLCSP), 0.4 mm pitch, bottom-side ball layout (balls-up view), footprint-optimized for ultra-thin USB-C cable plugs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB Type-C EMCA controller applications.

Compared with CYPD2802A1-09FNXIT, the CYPD2803A1-09FNXIT adds EPR and USB4/TBT4 protocol support; compared with CYPD3177-48LQXI, it offers lower cost, smaller WLCSP-9 footprint, and optimized passive-cable power efficiency - making it ideal for high-volume, space-constrained EMCA designs.

Availability

CYPD2803A1-09FNXIT is available at Aetrix Electronics and suitable for high-power USB-C charging cables, USB4/TBT4 passive interconnects, and automotive in-cabin harnesses requiring stable component supply and long-term lifecycle support.

Supply support for CYPD2803A1-09FNXIT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensing, and connectivity ICs for industrial, automotive, and consumer applications.

The EZ-PD™ CMG2 product line is designed specifically for USB Type-C electronically marked passive cables, delivering certified power negotiation, robust short-circuit protection, and compact WLCSP integration for next-generation high-wattage interconnects.

FAQ

What is the maximum VBUS short voltage the CYPD2803A1-09FNXIT can withstand on its CC and VCONN pins?

The CYPD2803A1-09FNXIT provides integrated protection against VBUS shorts up to 54 V on CC, VCONN1, and VCONN2 pins, as specified in the absolute maximum ratings table of Rev. *D datasheet. This eliminates the need for external high-voltage TVS diodes in compliant cable designs.

Can the 47-byte configuration memory be reprogrammed in-system after cable assembly?

Yes - the 47-byte storage is accessible and programmable over the standard USB Type-C CC interface using Infineon's EZ-PD™ Configuration Utility and CY4532 EVK. No dedicated test pads or JTAG interface are required, enabling field updates and post-assembly customization.

Does the CYPD2803A1-09FNXIT require an external crystal or clock source?

No - the device integrates a precision internal oscillator, removing the need for external timing components. This simplifies layout, reduces bill-of-materials cost, and improves reliability in ultra-compact USB-C plug implementations where board space is severely constrained.

How does the device handle VCONN power selection in dual-chip cable configurations?

In dual-chip mode, only the CMG2 chip nearest to the VCONN-supplying DFP (host) becomes active; the other enters low-power sleep. This is managed autonomously via VCONN detection circuitry - no host coordination or firmware intervention is required for seamless plug orientation independence.