Infineon Technologies CYPD6128-48LQXIT

Overview

CYPD6128-48LQXIT from Infineon is a single-port, USB Type-C and Power Delivery 3.0 port controller featuring an integrated Arm® Cortex®-M0 processor (48 MHz, 64-KB flash, 96-KB ROM), VBUS provider load switch (5 V/3 A), dual CC-line transceiver with Rp/Rd termination, and true random number generator (TRNG) for authentication. It supports fast role swap, dead-battery operation via 21.5-V LDO, and integrated VCONN FETs for EMCA cable power.

For engineers reviewing the CYPD6128-48LQXIT datasheet, CYPD6128-48LQXIT pinout, CYPD6128-48LQXIT application, or CYPD6128-48LQXIT equivalent, this device serves as a complete, single-chip USB-C PD solution for notebook host ports requiring integrated protection, protocol stack execution, and hardware-controlled VBUS management under hot-swap conditions.

Technical Context

The CYPD6128-48LQXIT implements a dedicated USB PD subsystem per port with BMC physical layer, integrated baseband MAC, and programmable state machine for PD negotiation-including extended data messaging and fast role swap. Its dual CC-line interface includes configurable current sources (900 mA / 1.5 A / 3 A) for DFP roles and fixed Rd for UFP roles.

It integrates a high-voltage tolerant analog front-end: CC/SBU pins withstand shorts to 21.5-V VBUS, SBU pass-through switches provide 20-V short-circuit protection, and the VBUS provider path features slew-rate-controlled gate driver, 5-mΩ high-side current sensing, and hardware-configurable OVP/UVP/OCP/SCP/RCP/OTP.

Key Specifications

Pinout & Package

Package: 48-pin QFN (6.0 mm × 6.0 mm × 0.6 mm, 0.4-mm pitch), thermally enhanced with exposed pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CYPD6127-48LQXIT, this part adds verified secure boot and TRNG-based key generation; compared with TPS65988DHFR, it delivers self-contained PD execution and lower system-level integration effort at the cost of fixed firmware flexibility.

Availability

CYPD6128-48LQXIT is available at Aetrix Electronics and suitable for notebook host ports, Thunderbolt™ docking systems, desktop front-panel interfaces, and industrial embedded hosts requiring stable component supply, long-lifecycle assurance, and USB-IF certified PD 3.0 compliance.

Supply support for CYPD6128-48LQXIT 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, automotive MCUs, and connectivity solutions, with global manufacturing and quality certifications including IATF 16949 and ISO 9001.

This device belongs to the EZ-PD™ CCG6SF product line-designed specifically for single-port, host-side USB-C PD applications where integrated MCU, protection, and authentication reduce design risk and time-to-certification.

FAQ

What firmware is preloaded on CYPD6128-48LQXIT?

CYPD6128-48LQXIT ships with Infineon's certified EZ-PD™ CCG6SF firmware v4.2.x, including USB-IF PD 3.0 compliance, fast role swap, extended messaging, and secure boot enabled via TRNG-derived keys. Firmware is locked in ROM and cannot be overwritten without authorized provisioning tools.

Does this part support USB4 or Thunderbolt alternate modes?

No-CYPD6128-48LQXIT does not implement USB4 or Thunderbolt protocol logic. It supports USB-C alternate mode entry/exit signaling only; actual Thunderbolt functionality requires a separate Thunderbolt controller (e.g., JHL8xxx) coordinated via GPIO or I²C handshake.

Can the VBUS provider switch drive a 3-A load continuously?

Yes-the integrated VBUS provider switch is rated for continuous 3-A DC current at 5 V with junction temperature ≤125°C. Thermal performance depends on PCB copper area, airflow, and ambient temperature; Infineon recommends ≥4 cm² of 2-oz copper under the exposed pad per layout guidelines.

Is external crystal required for USB-C timing accuracy?

No-CYPD6128-48LQXIT uses an integrated IMO (Internal Main Oscillator) with ±1% accuracy over temperature and voltage, sufficient for USB PD BMC timing. An external crystal is optional only if tighter USB 2.0 HS jitter specs (<1.5% UI) are required for specific host PHY implementations.