Infineon Technologies CYPD3174-24LQXQ

Overview

CYPD3174-24LQXQ from Infineon is a single-chip USB Type-C port controller with integrated Arm® Cortex®-M0 MCU (64 KB Flash, 8 KB SRAM), full USB PD 3.1 + PPS support, dual legacy charger detection (QC 4.0, Apple 2.4A, AFC, BC 1.2), and analog VBUS regulation with low-side current sensing - deployed in PC adapters, car chargers, and power banks.

For engineers reviewing the CYPD3174-24LQXQ datasheet, CYPD3174-24LQXQ pinout, CYPD3174-24LQXQ application, or CYPD3174-24LQXQ equivalent, this page delivers verified technical context, package-mapped pin functions, real-world use-value per application, and validated alternative options for USB-C PD system design.

Technical Context

The device implements a dedicated USB PD physical layer with BMC-encoded half-duplex CC communication, on-die RP/RD termination switching, and collision-avoidance logic compliant with USB PD 3.1. It integrates two 8-bit SAR ADCs with GPIO/DP/DM muxing and internal bandgap or VDDD reference selection.

VBUS regulation uses analog feedback control supporting direct optocoupler or shunt regulator topologies, with configurable constant-voltage or constant-current modes. Fault protection includes hardware OVP/OCP/UVP/SCP, VBUS-to-CC short tolerance up to 22 V DC (1000 h), and ±8-kV contact / ±15-kV air-gap ESD on CC1/CC2/VBUS_C_MON_DISCHARGE/DP0/DM0/P2.2/P2.3.

Key Specifications

Pinout & Package

Package: 24-pin QFN (4 mm × 4 mm, 0.5 mm pitch), wettable flank, RoHS-compliant, thermal pad exposed on bottom.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CYPD3171-24LQXQ, this part adds PPS, full 64-KB flash, dual ADCs, and enhanced safety logging; versus CYPD3175-24LQXQ, it offers identical silicon but requires firmware update to match latest certified behavior.

Availability

CYPD3174-24LQXQ is available at Aetrix Electronics and suitable for PC power adapters, car chargers, and power banks requiring stable component supply, long-lifecycle support, and USB-IF certified PD 3.1 functionality.

Supply support for CYPD3174-24LQXQ 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 leader specializing in power management, automotive ICs, and connectivity solutions, with global manufacturing and quality certifications including ISO/TS 16949 and IATF 16949.

This device belongs to the EZ-PD™ CCG3PA product line, engineered specifically for consumer USB-C power delivery applications where integration, safety, and multi-protocol charging coexist in space-constrained designs.

FAQ

What is the difference between CYPD3174 and CYPD3175?

CYPD3174 and CYPD3175 share identical silicon and pinout, but CYPD3175 ships with newer factory-programmed firmware enabling full USB-IF PD 3.1 certification, enhanced fault logging, and updated safety algorithms. CYPD3174 requires firmware update to match CYPD3175's certified behavior - both are hardware-compatible.

Does CYPD3174-24LQXQ support dead-battery charging?

Yes - when ordered in power bank–optimized variants (e.g., CYPD3174-24LQXQ with dead-battery RD bond option), the device provides fixed RD termination on CC1/CC2 pins in unpowered state, enabling detection and charging of devices with fully depleted batteries per USB Type-C specification.

Can CYPD3174 drive external N-channel MOSFETs for VBUS control?

No - CYPD3174 integrates dual PFET gate drivers optimized for high-side P-channel switches only. Its VBUS_C_CTRL output is designed to directly drive the gate of external P-channel MOSFETs in the VBUS path; N-channel use requires external level-shifting and driver circuitry not supported natively.

Is external crystal required for USB PD timing?

No - CYPD3174 includes a factory-trimmed internal oscillator meeting USB PD BMC timing accuracy requirements (±1.5% over temperature). No external crystal or clock source is needed, reducing BOM count and board space while maintaining full PD 3.1 compliance.