CYPD3172P-24LQXQ

Application Specific Microcontrollers Overview

The CYPD3172P-24LQXQ 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 2.0/3.0 with PPS, QC4+, QC3.0, QC2.0, Samsung AFC, Apple charging, and BC v1.2 protocols. It features configurable OVP, UVP, OCP, SCP, and OTP protection. Operating voltage ranges from 3.3 V to 21.5 V on VBUS_IN, with an internal regulator providing 5 V (for inputs ≥5.5 V) or VBUS_IN - 300 mV (for inputs <5.5 V). It is housed in a 24-pin QFN package.

Application Specific Microcontrollers Feature Summary

• Integrates NFET gate driver, dual error amplifiers for CV/CC regulation, and low-side current sense amplifier.
• Supports USB PD 3.0 PPS, QC4+, QC3.0, QC2.0, Samsung AFC, Apple charging, and BC v1.2.
• Includes 6 GPIOs, analog feedback control via EA_OUT/FB pins, and comprehensive fault protection (OVP, UVP, OCP, SCP, OTP).
• Built on M0S8 technology with 64 KB Flash and 4 KB SRAM in a 24-QFN package.

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 component authenticity through authorized Infineon distributors. Confirm the ordering suffix 'P' indicates the pre-programmed version with base firmware. Check for End-of-Life (EOL) notifications, as discontinuation notices have been recorded for related CYPD3172 variants. Ensure compliance with RoHS standards and moisture sensitivity level (MSL) handling requirements during assembly.

Application Specific Microcontrollers Selection Notes

Select this part for designs requiring integrated NFET gate driving and analog feedback control for secondary side regulation. It is suitable for opto-coupler or direct feedback architectures. Ensure the application requires USB PD 3.0 PPS support and legacy charging compatibility. Verify that the 24-QFN package footprint and thermal requirements align with the PCB design constraints.

Application Specific Microcontrollers Part Context

This component belongs to the EZ-PD™ CCG3PA-NFET family, originally developed by Cypress Semiconductor before its acquisition by Infineon Technologies. The 'P' suffix denotes a pre-programmed variant containing base firmware, distinguishing it from programmable versions. It serves as a highly integrated solution for simplifying BOM and enhancing functionality in USB Type-C power adapter designs.

Application Specific Microcontrollers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Infineon's official cross-reference tools or contact sales for qualified alternatives if this specific pre-programmed variant is unavailable.

Application Specific Microcontrollers FAQ

How does the CYPD3172P handle secondary side feedback?

It integrates two error amplifiers for constant voltage and constant current modes. The EA_OUT pin outputs a proportional current that can drive an opto-isolator for primary controller feedback or be used in direct feedback configurations.

What is the function of the VBUS_CTRL pin?

VBUS_CTRL is the output of the integrated NFET gate driver. It controls the external load switch NFET, driving the gate to VBUS_IN + 8 V to turn it on, or low to turn it off.

Can the DP and DM lines be used as general-purpose I/O?

Yes. If legacy charging protocols (BC 1.2, Quick Charge, etc.) are not required, the DP and DM lines can be reused as standard GPIOs (specifically GPIO4 and GPIO5).