Infineon Technologies CYPAS213A124SXQXLXA1

Overview

CYPAS213A124SXQXLXA1 from Infineon is an integrated secondary-side USB Power Delivery 3.1 controller with synchronous rectifier (SR) functionality, supporting EPR up to 28 V VBUS, 300 kHz SR switching, and dual-mode operation in QR/CrCM/DCM/CCM flyback topologies. It integrates a 32-bit Cortex® M0+ MCU (64 KB Flash, 8 KB SRAM), low-side current sense amplifier, dual VBUS discharge FETs, and NFET gate drivers for load switch and VCONN control - deployed in compact USB-C AC-DC adapters requiring high efficiency and multi-protocol charging.

For engineers reviewing the CYPAS213A124SXQXLXA1 datasheet, CYPAS213A124SXQXLXA1 pinout, CYPAS213A124SXQXLXA1 application, or CYPAS213A124SXQXLXA1 equivalent, key selection considerations include SR propagation delay (40 ns turn-on / 25 ns turn-off), USB PD 3.1 + EPR compliance, support for QC5.0/PPS/Samsung AFC/Apple Charging, and dual-package availability (32-pin QFN / 24-pin SOIC) with –40°C to +150°C junction temperature rating.

Technical Context

The device implements a tightly coupled dual-function architecture: its SR controller uses fast ZCD via SR_CAP and SR_SEN inputs to enable precise MOSFET timing across conduction modes, while its protocol engine handles BMC physical layer signaling on CC1/CC2 and supports full PD 3.1 message stack including EPR negotiation. The integrated MCU executes firmware-defined power policy, fault response, and dynamic voltage/current regulation.

Power management includes independent LDOs (VCCD at 1.8 V, VDDD at 3.0–5.5 V), HV regulator input (VBUS_IN: 3.3–30 V), and configurable protections - VBUS OVP/UVP/OCP/SCP, OTP, CC-to-VBUS short detection, and ESD hardening on CC/DP/DM/VBUS lines - all coordinated by the on-chip 32-bit Cortex® M0+ subsystem.

Key Specifications

Pinout & Package

Package: 32-pin QFN (7 mm × 7 mm, 0.5 mm pitch), exposed thermal pad (EPAD), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB PD + synchronous rectification controller applications.

Compared with STUSB4760BTR and MPQ4282GQ-A, CYPAS213A124SXQXLXA1 uniquely combines PD 3.1+EPR, full multi-protocol charging, and adaptive SR timing in one MCU-based IC - enabling single-chip 240 W adapter designs with field-upgradable firmware and no external timing components.

Availability

CYPAS213A124SXQXLXA1 is available at Aetrix Electronics and suitable for USB-C wall adapters, GaN-based high-power chargers, multi-protocol travel adapters, and OEM USB-C power supplies requiring stable component supply and long-term lifecycle support.

Supply support for CYPAS213A124SXQXLXA1 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, and industrial control ICs, with leadership in silicon carbide, GaN drivers, and USB PD solutions.

CYPAS213A124SXQXLXA1 belongs to the EZ-PD™ PAG2S-PS product line - designed specifically for high-efficiency, multi-protocol USB-C AC-DC adapters requiring integrated PD 3.1+EPR control, adaptive synchronous rectification, and firmware-upgradable power policy engines.

FAQ

What USB Power Delivery versions and extended features does CYPAS213A124SXQXLXA1 support?

CYPAS213A124SXQXLXA1 is fully compliant with USB PD 3.1 and supports Extended Power Range (EPR) up to 28 V VBUS, enabling 240 W power delivery. It also supports PD 3.0 with Programmable Power Supply (PPS), PD 2.0, and legacy protocols including QC5.0, QC4+, Samsung AFC, Apple Charging, and BC 1.2 - all implemented in on-chip firmware without external components.

How does the synchronous rectifier controller handle different flyback operating modes?

The SR controller natively supports quasi-resonant (QR), critical conduction mode (CrCM), discontinuous conduction mode (DCM), and continuous conduction mode (CCM). It uses dual sensing inputs (SR_SEN for drain voltage and SR_CAP for high-frequency ZCD) to detect transformer reset accurately across all modes, with automatic mode detection and adaptive timing to minimize body diode conduction loss.

Does CYPAS213A124SXQXLXA1 require an external microcontroller for USB PD communication?

No. The device integrates a 32-bit ARM Cortex® M0+ MCU with 64 KB Flash, 8 KB SRAM, and 64 KB ROM, hosting the complete USB PD 3.1 stack, SR control firmware, and multi-protocol charging logic. No external MCU is needed - all protocol negotiation, fault handling, and power policy execution occur on-die.

What package variants are offered for CYPAS213A124SXQXLXA1 and how do they differ in thermal performance?

CYPAS213A124SXQXLXA1 is available in 32-pin QFN (7 × 7 mm, 0.5 mm pitch) and 24-pin SOIC packages. The QFN variant features an exposed thermal pad and lower thermal resistance (θ_JA ≈ 42°C/W), making it preferred for >65 W adapters. The SOIC version offers easier assembly and rework but has higher θ_JA (~75°C/W), suited for cost-optimized ≤45 W designs.