EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts    CYPD3120-40LQXI
CYPD3120-40LQXI

CYPD3120-40LQXI

Infineon (Cypress)
Cypress/Infineon Type-C controllers are alternatives for projects that may later require deeper protocol integration or PD features.
Active6,085 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The Infineon CYPD3120-40LQXI is a highly integrated USB Type-C controller with Power Delivery (PD) capabilities, built around an ARM Cortex-M0 core. It offers robust features for managing USB-C connections, power negotiation, and various protection mechanisms. This controller is designed for applications requiring intelligent USB-C interface management with advanced protocol handling.

Why Choose This Part

Engineers choose the CYPD3120-40LQXI for its integrated ARM Cortex-M0 core, providing flexibility for custom firmware and deeper protocol integration. Its comprehensive feature set, including VCONN FETs, gate drivers, and overcurrent/overvoltage protection, simplifies the design of robust USB-C solutions. The wide supply voltage range of 2.7V to 21.5V allows for broad application compatibility.

Applications

USB-C Peripheral Devices
Enabling USB Type-C connectivity and Power Delivery for various peripheral devices such as docking stations, external drives, and monitors.
Laptop and Tablet Charging Ports
Implementing intelligent USB-C charging ports in laptops, tablets, and other portable devices, managing power roles and delivery.
Power Adapters and Chargers
Designing smart USB-C power adapters and chargers that can negotiate appropriate voltage and current levels with connected devices.
Automotive Infotainment Systems
Integrating USB Type-C interfaces with PD into automotive infotainment and charging systems for enhanced user experience.
Industrial Equipment with USB-C
Providing reliable USB-C connectivity and power management for industrial devices and embedded systems.

Key Specifications

RAM Size 8K x 8
Interface I2C, SPI, UART/USART, USB
Applications USB Type C
Mounting Type Surface Mount
Number of I/O 16
Core Processor ARM Cortex-M0
Package / Case 40-UFQFN Exposed Pad
Voltage - Supply 2.7V ~ 21.5V
Program Memory Type FLASH (128kB)
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 40-QFN (6x6)

Getting Started

To get started, engineers can utilize Infineon's ModusToolbox software development environment, which provides tools, libraries, and examples for Cypress microcontrollers. Evaluation kits and reference designs from Infineon are available to accelerate development and prototyping of USB-C and Power Delivery applications. The part supports standard ARM SWD/JTAG debugging.

Also Consider

STUSB4500QTR STMicroelectronics - The STUSB4500 is a standalone USB-C PD controller that may be simpler to integrate for source-only applications without a microcontroller.
The 2026 Embedded Online Conference