Infineon Technologies CYPAS211A132LQXQTXUMA1

Overview

CYPAS211A132LQXQTXUMA1 from Infineon Technologies is an integrated secondary-side QR-ZVS PWM controller and USB Power Delivery 3.1 controller with EPR support up to 28 V VBUS, 32-bit Cortex-M0+ MCU (64 KB Flash, 8 KB SRAM), and synchronous rectifier driver supporting QR/CrCM/DCM/CCM modes up to 300 kHz-designed for high-efficiency USB-C AC-DC flyback adapters.

For engineers reviewing the CYPAS211A132LQXQTXUMA1 datasheet, CYPAS211A132LQXQTXUMA1 pinout, CYPAS211A132LQXQTXUMA1 application, or CYPAS211A132LQXQTXUMA1 equivalent, key selection considerations include USB PD 3.1 + EPR compliance, secondary-side ZVS control architecture, integrated LSCSA and dual VBUS discharge FETs, and 32-pin QFN package with –40°C to +150°C junction temperature rating.

Technical Context

The device implements a dual-loop regulation architecture: one error amplifier for constant-voltage (CV) feedback via FB/EА_OUT and another for constant-current (CC) regulation using the low-side current sense amplifier (LSCSA) with CC_COMP_GPIO pins. The PWM generator uses a programmable ramp compared against EA output to determine pulse width, transferred to primary side via pulse-edge transformer.

Its synchronous rectifier control supports multiple conduction modes-including quasi-resonant (QR), critical conduction (CrCM), valley switching, DCM, and CCM-with ZVS detection enabled by SR_SEN/SR_CAP sensing and internal zero-crossing detect (ZCD). The integrated 32-bit Cortex-M0+ executes protocol stack (USB PD 3.1, PPS, QC5.0, AFC, Apple Charging) and real-time power management.

Key Specifications

Pinout & Package

32-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad (EPAD) for enhanced thermal performance in enclosed USB-C adapter housings.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar secondary-side USB PD + QR-ZVS controller applications.

Compared with MPQ4282-AEC1 and STCH03, CYPAS211A132LQXQTXUMA1 delivers full integration-combining PD 3.1+EPR, SR control, ZVS, and MCU in one die-reducing system complexity, footprint, and firmware development effort for high-efficiency USB-C adapters.

Availability

CYPAS211A132LQXQTXUMA1 is available at Aetrix Electronics and suitable for USB-C EPR adapters, multi-protocol GaN chargers, and industrial USB-C power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CYPAS211A132LQXQTXUMA1 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 electronics, and security solutions, with global manufacturing and R&D infrastructure.

CYPAS211 belongs to the EZ-PD™ PAG2S-QZ product line, designed specifically for highly integrated, high-efficiency secondary-side USB PD + QR-ZVS control in compact, thermally constrained USB-C power adapters.

FAQ

What USB charging protocols does CYPAS211A132LQXQTXUMA1 support beyond USB PD?

CYPAS211A132LQXQTXUMA1 natively supports Qualcomm Quick Charge 5.0, 4+, 4.0, 3.0, and 2.0; Samsung Adaptive Fast Charging (AFC); Apple Charging; and Battery Charging v1.2. These protocols are executed in firmware on the integrated Cortex-M0+, eliminating need for external protocol ICs or level-shifters.

How does the device implement zero-voltage switching (ZVS) for synchronous rectification?

ZVS is implemented via real-time detection of drain-source voltage zero-crossing (ZCD) using the SR_SEN pin and internal comparator. For resonance frequencies above 4 MHz, SR_CAP pin enables peak-detect mode via 10-pF coupling capacitor. The SR_GDRV output is precisely timed to turn on the external NFET at or near V_DS = 0, minimizing switching loss and EMI.

Can CYPAS211A132LQXQTXUMA1 drive both standard and logic-level MOSFETs for synchronous rectification?

Yes-the SR_GDRV output can be configured to drive at either VDDD (3.0–5.5 V) or 2×VDDD (using internal charge pump with capacitor across SR_CPP/SR_CPN), supporting gate thresholds from 1.2 V (logic-level) to 4.5 V (standard NFET). This eliminates need for external gate drivers or level shifters.

What protection features are integrated for USB Type-C connector safety?

The device integrates dedicated protection for USB-C interfaces: electrostatic discharge (ESD) protection on CC1/CC2/DP/DM lines (±8 kV HBM), overvoltage protection on DP/DM (up to 20 V), and hardware-level detection and blocking of accidental VBUS-to-CC shorts-preventing damage during cable insertion or hot-plug events.