CYPD3173-24LQXQ

Application Specific Microcontrollers Overview

The CYPD3173-24LQXQ is a highly integrated USB Type-C port controller from the EZ-PD™ CCG3PA-NFET family, designed for power adapters. It features an ARM Cortex-M0 MCU with 64 KB flash and 4 KB SRAM, operating within a 3.3 V to 21.5 V input range. The device integrates a USB PD transceiver, termination resistors, a low-side current sense amplifier (LSCSA), two VBUS discharge FETs, and an NFET gate driver. It supports USB PD 2.0/3.0 with PPS, QC4+, QC3.0, BC v1.2, Samsung AFC, and Apple charging protocols. Protection includes configurable OVP, UVP, OCP, SCP, and OTP.

Application Specific Microcontrollers Feature Summary

• Integrates USB PD 3.0 PPS support with independent CC and CV error amplifiers for analog regulation via direct feedback or opto-coupler.
• Includes a high-voltage regulator, LSCSA with gain options of 5 to 150, and an NFET gate driver capable of driving up to VBUS_IN + 8 V.
• Provides comprehensive fault protection including configurable overvoltage, undervoltage, overcurrent, short circuit, and over-temperature thresholds.
• Features six GPIOs, legacy charging detection (BC 1.2, Quick Charge, Apple, AFC), and ESD protection rated at 2.2 kV HBM and 500 V CDM.

Application Specific Microcontrollers Applications

• USB PD 3.0 PPS Power Adapters
• Quick Charge 4.0 Power Adapters
• Power adapters supporting both USB PD and legacy charging protocols

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against Infineon's official documentation to confirm package type and pre-programming status. Ensure compatibility with the intended feedback architecture, as PPS functionality may require an opto-based feedback configuration. Confirm that the selected variant matches the required firmware state for the target application.

Application Specific Microcontrollers Selection Notes

Select this component for designs requiring integrated NFET gate driving and secondary-side regulation without external discrete controllers. Evaluate the need for programmable versus preprogrammed versions based on manufacturing workflows. Consider the 24-QFN package constraints and ensure adequate thermal management for the extended industrial temperature range of -40 °C to +105 °C.

Application Specific Microcontrollers Part Context

The CYPD3173-24LQXQ belongs to the EZ-PD™ CCG3PA-NFET family, originally developed by Cypress Semiconductor before its acquisition by Infineon Technologies. This series is specifically engineered for compact power adapter designs, combining protocol handling with power stage control elements in a single 24-pin QFN package.

Application Specific Microcontrollers Replacement Considerations

Consult Infineon's official cross-reference tools for verified replacements. Generic substitutes may lack the integrated NFET gate driver or specific USB PD PPS compliance features inherent to the CCG3PA-NFET architecture.