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Home > Products > Integrated Circuits (ICs) > Embedded > Application Specific Microcontrollers

Infineon Technologies CYPD2120-24LQXI

Name: CYPD2120-24LQXI
Brand: Infineon Technologies
SKU: CYPD2120-24LQXI
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CYPD2120-24LQXI

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 24-UFQFN Exposed Pad

Datasheet:: CYPD2120-24LQXI.pdf

Description:: IC USB TYPE C 1-PORT 24QFN

Quantity:: RFQ Add To RFQ list

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Inventory:1,064

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Product details

Overview

CYPD2120-24LQXI from Infineon is a USB Type-C port controller IC implementing full USB Power Delivery 3.0 protocol stack, featuring a 48-MHz Arm® Cortex®-M0 CPU, 32-KB flash, integrated Type-C transceiver with RP/RD/RA termination, and dual VCONN rails - deployed in notebook upstream ports, EMCA cables, and powered accessories requiring autonomous role negotiation and firmware-updatable PD policy.

For engineers reviewing the CYPD2120-24LQXI datasheet, CYPD2120-24LQXI pinout, CYPD2120-24LQXI application, or CYPD2120-24LQXI equivalent, this device delivers verified CC-line BMC decoding, runtime-reconfigurable SCB (I²C/SPI/UART), ±8-kV IEC61000-4-2 ESD on CC/VCONN, deep-sleep current of 2.5 µA, and industrial temperature support up to +105°C - critical for robust USB-C port control in space-constrained, thermally demanding designs.

Technical Context

The CYPD2120-24LQXI implements a dedicated USB-PD subsystem with baseband PHY handling BMC modulation/demodulation and 4b/5b encoding, coupled to a hardware-accelerated protocol engine that executes PD state machines without CPU intervention. Its dual VCONN rails provide independent 5-V power switching for cable electronics, with integrated isolation preventing cross-rail fault propagation.

It integrates a programmable I/O matrix supporting 12 GPIOs, two overvoltage-tolerant (OVT) pins for CC line sensing, and a 8-bit SAR ADC for auxiliary voltage monitoring - all synchronized via AHB-Lite bus to the Cortex-M0 core running at 48 MHz with 32-KB flash and 4-KB SRAM.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm® Cortex®-M0 @ 48 MHz - enables deterministic PD timing response and Thumb-2 binary compatibility with higher-tier CCGx devices.
Flash Memory	32 KB - sufficient for full USB PD 3.0 policy engine, Type-C state machine, and vendor-defined firmware extensions.
SRAM	4 KB - supports concurrent USB PD messaging buffers, GPIO configuration tables, and runtime variable storage.
Type-C Transceiver	Integrated baseband PHY with RP/RD/RA resistors - eliminates external termination components and reduces BOM count by ≥4 passive parts.
VCONN Support	Dual independent 5-V rails with internal isolation - allows simultaneous powering of asymmetric cable electronics (e.g., active EMCA with separate logic/analog sections).
ESD Rating	±8-kV contact / ±15-kV air-gap (IEC61000-4-2 Level 4C) on CC and VCONN pins - meets end-equipment surge immunity requirements without external TVS diodes.
Operating Temp	–40°C to +105°C - validated for use in notebook adapter ports and automotive-infotainment USB-C hubs where ambient heat exceeds 85°C.

Pinout & Package

Package: 4.0 mm × 4.0 mm, 24-pin QFN (0.55-mm pitch), wettable flank, RoHS-compliant, thermal pad exposed on underside for PCB heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
VDDIO	I/O supply rail	Independent 1.71–5.5-V input enabling mixed-voltage signaling (e.g., 3.3-V MCU interface + 5-V VCONN control).
VCONN1 / VCONN2	Dual VCONN power outputs	Each drives up to 1-W load at 5 V; internally isolated to prevent fault coupling between cable-side circuits.
CC1 / CC2	Configuration Channel I/O	OVT-capable pins with integrated BMC transceiver - handle plug orientation detection, role negotiation, and PD message exchange without external level shifters.
XRES	Active-low reset input	Asynchronous reset pin with 1.0-µA deep-sleep leakage - supports system-level power sequencing and brownout recovery.
SWDIO / SWCLK	Serial Wire Debug interface	2-pin JTAG-compatible debug path - enables in-system firmware update and real-time trace during development and field reprogramming.

Key Features

Feature	Design Value
Runtime-reconfigurable SCB	Single serial block dynamically switchable between I²C, SPI, or UART - reduces pin count while supporting multiple host interfaces (e.g., I²C to MCU, UART to debug console).
Integrated IMO	Factory-trimmed internal main oscillator - eliminates need for external crystal or clock source, saving 2–3 mm² PCB area and reducing startup time by >10 ms.
Deep Sleep Mode	2.5-µA quiescent current with VCONN monitoring active - extends battery life in portable accessories during cable disconnect states.
GPIO Flexibility	12 programmable I/Os with configurable pull-up/down, drive strength, and interrupt capability - supports custom status LEDs, button inputs, and analog sensing via shared ADC channel.

Applications

USB Type-C EMCA Cables

USB-C Notebook Upstream Ports

Use Scenario: Active cable with e-marker chip and signal integrity compensation circuitry.

IC Role / Device Role / Timing Role: Primary PD controller managing VCONN power delivery, cable ID authentication, and SOP'/SOP" message routing.

Use Value: Dual VCONN rails enable independent powering of e-marker EEPROM and high-speed retimer ICs, eliminating inter-rail contention during hot-plug events.

Use Scenario: Thunderbolt™-compatible laptop docking station with dual USB-C ports.

IC Role / Device Role / Timing Role: Upstream-facing port controller negotiating DFP role, sourcing 20 V/5 A, and enforcing policy-based power contract enforcement.

Use Value: Integrated RP termination and BMC decoder ensure sub-100-ms connection detection and compliant PD contract establishment per USB-IF certification test plan.

USB-C Powered Accessories

USB-C Display Dongles

Use Scenario: HDMI-to-USB-C adapter with integrated video bridge and USB hub.

IC Role / Device Role / Timing Role: Policy manager coordinating power allocation between display interface, USB data, and auxiliary functions via PD messaging.

Use Value: 32-KB flash stores vendor-specific PD object definitions and dynamic power budgeting logic - enabling adaptive 15-W/30-W/60-W mode switching based on sink capability.

Use Scenario: MiniDP-to-USB-C dongle supporting DisplayPort Alt Mode handshaking.

IC Role / Device Role / Timing Role: Alt Mode initiator detecting DP-capable sink and configuring pin muxing and link training parameters via VDM exchanges.

Use Value: Runtime-reconfigurable SCB allows same pin to serve as I²C for DP AUX channel and UART for debug logging - simplifying layout and reducing layer count.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CYPD3171-24LQXQ	USB PD 3.0 + PPS support, 64-KB flash, dual-role port (DRP) capable, includes hardware PD message buffer.	Required for programmable power supply (PPS) compliance and bidirectional power negotiation in chargers.	Select when PPS, higher flash margin, or DRP operation is mandatory - not drop-in due to different firmware API and pin mapping.
STUSB4500QTR	Dedicated PD controller (no MCU), fixed-function silicon, 16-KB ROM, no flash reprogrammability.	Suitable for cost-sensitive, single-role applications (e.g., fixed-source adapters) with no firmware customization needs.	Choose for lowest BOM cost and guaranteed timing in static PD roles - lacks GPIO flexibility, SCB reconfiguration, and firmware update capability.

Compared with CYPD3171-24LQXQ and STUSB4500QTR, the CYPD2120-24LQXI balances firmware agility and integration density - offering sufficient flash for custom policy engines while retaining compact QFN packaging and dual-VCONN support unmatched by fixed-function alternatives.

Availability

CYPD2120-24LQXI is available at Aetrix Electronics and suitable for USB-C notebook port controllers, EMCA cable assemblies, and powered display dongles requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CYPD2120-24LQXI 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 leadership in USB-C and Power Delivery silicon since 2015.

The EZ-PD™ CCG2 product line was designed specifically for cost-optimized, single-port USB-C implementations in space-constrained accessories and client devices - prioritizing low-power operation, integrated termination, and field-upgradable firmware.

FAQ

Does CYPD2120-24LQXI support USB Power Delivery 3.0 with Programmable Power Supply (PPS)?

No. The CYPD2120-24LQXI implements USB PD 3.0 specification but excludes PPS functionality. It supports Fixed Voltage (5/9/15/20 V) and Variable Voltage (3.3–21 V) contracts only. PPS requires hardware enhancements present in later-generation CCG3/CCG6 devices like CYPD3171 or CYPD6127.

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

No. It supports single-role operation only - configured at boot as either Downstream Facing Port (DFP) or Upstream Facing Port (UFP). Dual-role (DRP) capability requires additional hardware resources and firmware architecture found in CCG3 and newer controllers.

What is the maximum supported VCONN load current per rail?

Each VCONN rail (VCONN1 and VCONN2) supports up to 1 W (200 mA at 5 V) continuous output. This is validated per Infineon's electrical specifications and sufficient for powering e-marker ICs, small retimers, and level shifters in USB-C cables and adapters.

Is an external crystal required for CYPD2120-24LQXI operation?

No. The device integrates a factory-trimmed Internal Main Oscillator (IMO) operating at 48 MHz, eliminating the need for external crystal or clock source. An external clock may be used optionally via CLKIN pin, but is not required for USB PD compliance or full functionality.

CYPD2120-24LQXI Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: EZ-PD™ CCG2

Package/Case:: 24-UFQFN Exposed Pad

Packaging:: Bulk

Product Status:: Active

Programmable:: Not Verified

Applications:: USB Type C

Core Processor:: ARM® Cortex®-M0

Program Memory Type:: FLASH (32KB)

Controller Series:: -

RAM Size:: 4K x 8

Interface:: I2C, SPI, UART/USART, USB

Number of I/O:: 14

Voltage - Supply:: 1.71V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-QFN (4x4)

CYPD2120-24LQXI FAQ

1.How can I place an order for CYPD2120-24LQXI through Aetrix?

Please submit a Request for Quotation (RFQ) for CYPD2120-24LQXI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CYPD2120-24LQXI reliable?

The price and inventory of CYPD2120-24LQXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CYPD2120-24LQXI is usually 5 days.

3.What payment methods are accepted for CYPD2120-24LQXI?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CYPD2120-24LQXI transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CYPD2120-24LQXI?

CYPD2120-24LQXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CYPD2120-24LQXI order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CYPD2120-24LQXI?

For technical support, including CYPD2120-24LQXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CYPD2120-24LQXI requirements.

6.How does Aetrix verify that CYPD2120-24LQXI is sourced from the original manufacturer or authorized distributors?

All CYPD2120-24LQXI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CYPD2120-24LQXI meets industry standards.

7.What is the process for return or replacement of CYPD2120-24LQXI?

All CYPD2120-24LQXI units undergo pre-shipment inspection (PSI). If there is an issue with CYPD2120-24LQXI, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CYPD2120-24LQXI part is unused and in its original packaging.

Return procedure for CYPD2120-24LQXI:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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