CYPD3173-24LQXQT

Application Specific Microcontrollers Overview

The Infineon CYPD3173-24LQXQT is a USB Type-C port controller from the EZ-PD™ CCG3PA-NFET family, designed for power adapters. It integrates an ARM Cortex-M0 MCU with 64 KB flash and 4 KB SRAM, alongside a complete USB-PD transceiver, termination resistors, and a VBUS NFET gate driver. The device supports USB PD 3.0 with PPS, QC4+, QC3.0, BC v1.2, and legacy charging protocols. It features configurable OVP, UVP, OCP, SCP, and OTP protection, along with analog regulation for secondary side feedback via direct or opto-coupler interfaces. Operating within a 3.3 V to 21.5 V input range, it is housed in a 24-pin QFN package.

Application Specific Microcontrollers Feature Summary

• Integrates ARM Cortex-M0 MCU (64 KB Flash, 4 KB SRAM) and USB-PD 3.0/PPS transceiver
• Includes NFET gate driver, low-side current sense amplifier, and dual VBUS discharge FETs
• Supports multiple charging protocols: USB PD 3.0, QC4+/QC3.0, Samsung AFC, Apple, BC v1.2
• Provides configurable fault protection (OVP, UVP, OCP, SCP, OTP) and ESD protection (2.2 kV HBM)
• Enables independent constant voltage and constant current regulation via error amplifiers

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 the manufacturer's official datasheet to confirm firmware configuration and packaging details. Ensure compatibility with the intended feedback architecture, as the device supports both direct and opto-coupler based regulation methods which may influence external component selection.

Application Specific Microcontrollers Selection Notes

Select this component for designs requiring integrated NFET gate driving and secondary-side regulation without external discrete controllers. Confirm that the application utilizes the 24-QFN package constraints and requires support for PPS and legacy fast-charging standards simultaneously. Verify thermal management requirements for the extended industrial temperature range.

Application Specific Microcontrollers Part Context

This part belongs to the EZ-PD™ CCG3PA-NFET series, which combines a microcontroller with power stage control functions. It is specifically targeted at power adapter applications where BOM integration is critical. The device replaces separate protocol controllers and analog regulation circuits by consolidating these functions into a single silicon solution.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same family include CYPD3171, CYPD3172P, and CYPD3178, though feature sets such as NFET integration and specific protocol support vary. Cross-family migration to CCG7S or other USB-C controllers requires significant schematic and firmware redesign due to architectural differences.