Infineon Technologies CYPD2120-24LQXIT

Overview

CYPD2120-24LQXIT from Infineon is a USB Type-C port controller IC implementing full USB Power Delivery 2.0 protocol stack, featuring a 48-MHz Arm® Cortex®-M0 CPU, 32-KB flash, integrated Type-C transceiver with RP/RD/RA termination resistors, and dual VCONN rails - deployed in upstream/downstream facing ports of notebooks, powered accessories, and EMCA cables.

For engineers reviewing the CYPD2120-24LQXIT datasheet, CYPD2120-24LQXIT pinout, CYPD2120-24LQXIT application, or CYPD2120-24LQXIT equivalent, key selection criteria include CC line BMC decoding latency, VCONN current drive capability (±150 mA), deep-sleep power (2.5 µA), industrial temperature range (–40°C to +105°C), and QFN-24 package compatibility with USB-C system-level ESD requirements (±8-kV contact).

Technical Context

The CYPD2120-24LQXIT implements a dedicated USB-PD subsystem with baseband PHY supporting BMC encoding/decoding and 4b/5b conversion, coupled with hardware-assisted PD message parsing and policy engine execution. Its dual VCONN drivers support independent 5-V sourcing per CC line, enabling active cable and UFP/DFP role negotiation without external FETs.

It integrates two reconfigurable Serial Communication Blocks (SCB) supporting I²C, SPI, or UART at runtime, plus an 8-bit SAR ADC for voltage monitoring and six TCPWM blocks for GPIO timing-critical functions such as VBUS discharge control and LED signaling - all managed under AHB-Lite bus architecture with NVIC and WIC interrupt handling.

Key Specifications

Pinout & Package

Package: 4.0 mm × 4.0 mm, 0.55 mm pitch, 24-pin QFN (lead-free, RoHS-compliant). Exposed thermal pad enhances thermal dissipation in high-duty-cycle PD negotiation scenarios.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CYPD3171-24LQXIT and TPS65987DRLR, the CYPD2120-24LQXIT offers optimal balance of PD 2.0 functionality, ultra-low deep-sleep power, and compact QFN-24 footprint-making it ideal for cost-sensitive, space-constrained accessories where PD 3.0 or power conversion is unnecessary.

Availability

CYPD2120-24LQXIT is available at Aetrix Electronics and suitable for USB-C notebook ports, EMCA active cables, powered docking stations, and USB-C monitor hubs requiring stable component supply across industrial temperature ranges and long-lifecycle production programs.

Supply support for CYPD2120-24LQXIT 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 R&D centers and ISO/TS 16949-certified wafer fabs.

The EZ-PD™ CCG2 product line delivers certified, firmware-upgradable USB Type-C port controllers targeting cost-optimized, low-power accessories and embedded ports - designed specifically for rapid integration into USB-C infrastructure without external protocol accelerators.

FAQ

Does CYPD2120-24LQXIT support USB Power Delivery 3.0 or Programmable Power Supply (PPS)?

No. The CYPD2120-24LQXIT implements the USB PD 2.0 specification only. It does not support PPS, Fast Role Swap (FRS), or extended messaging defined in PD 3.0. Firmware updates cannot add these features due to hardware-level PHY and policy engine limitations. For PD 3.0 compliance, Infineon recommends CYPD3171-24LQXIT or later CCG3/CCG6 devices.

Can CYPD2120-24LQXIT operate as both a DFP and UFP simultaneously?

No. It supports single-role operation per port - either DFP (source) or UFP (sink) - determined at boot time by firmware configuration and CC line pull-up/pull-down states. Dual-role behavior requires external host coordination and firmware reconfiguration between sessions; true simultaneous dual-role is not supported in hardware.

What is the maximum continuous VCONN current per rail, and is thermal derating required?

Each VCONN rail delivers ±150 mA continuously at 5 V. Thermal performance data in the datasheet confirms no derating is needed up to +105°C ambient when mounted on a 4-layer PCB with 1-in² copper pour under the exposed thermal pad. Derating begins only above 125°C junction temperature, which exceeds the rated operating range.

Is external crystal required for accurate USB timing, or does the internal oscillator meet USB specification?

No external crystal is required. The integrated 48-MHz IMO meets USB full-speed timing accuracy (±0.25%) and USB PD BMC timing jitter (<50 ns) requirements across –40°C to +105°C. Crystal-less operation is validated per USB-IF test plan sections 4.1.2 and 7.2.1 for CCG2-based products.