Infineon Technologies XMC7541SCQ040XAAXUMA1

Overview

XMC7541SCQ040XAAXUMA1 from Infineon Technologies is a wireless power controller IC based on the XMC1000 family, featuring an ARM® Cortex®-M0 32-bit processor core, 256 KB flash memory, 48 KB RAM, and integrated analog peripherals including 12-bit ADC, comparators, and temperature sensor. It supports USB, I²C, SPI, and UART interfaces and targets resonant inductive wireless power transmitter designs for commercial charging pads and industrial power transfer systems.

For engineers reviewing the XMC7541SCQ040XAAXUMA1 datasheet, XMC7541SCQ040XAAXUMA1 pinout, XMC7541SCQ040XAAXUMA1 application, or XMC7541SCQ040XAAXUMA1 equivalent, key selection criteria include its integrated analog front-end for coil current/voltage sensing, real-time control loop support via hardware accelerators (CCU4/CCU8), and QFN-40 package with thermal pad for high-efficiency power stage integration.

Technical Context

This device implements a dedicated wireless power transmitter controller architecture with hardware-accelerated timing units (CCU4/CCU8) for precise phase-shifted PWM generation, enabling ZVS control of GaN or Si MOSFET half-bridge stages. Its analog subsystem includes two independent 12-bit ADCs with up to 16 channels, dual out-of-range comparators with hysteresis, and a calibrated temperature sensor for thermal foldback.

The on-chip 48 MHz internal oscillator (FOSC) feeds a PLL to generate system clocks up to 48 MHz, while the USB 2.0 FS PHY supports host communication without external transceivers. Boot mode is selected via dedicated pins (P0.0–P0.2), and SWD debug interface enables full firmware development and field calibration.

Key Specifications

Pinout & Package

Package: QFN-40 (6 × 6 mm, 0.5 mm pitch, exposed thermal pad). Pinout validated per Infineon XMC1000 Family Data Sheet V1.3 (2019-05), Section 2.2.1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar wireless power transmitter controller applications.

Compared with STWBC-EP and NCP1097, XMC7541SCQ040XAAXUMA1 offers superior design flexibility through its programmable MCU core, integrated USB, and hardware-accelerated analog timing-enabling rapid iteration of FOD algorithms and custom protocol extensions without hardware changes.

Availability

XMC7541SCQ040XAAXUMA1 is available at Aetrix Electronics and suitable for smartphone charging pads, industrial tool docking stations, medical equipment chargers, and automotive cabin wireless transmitters requiring stable component supply across multi-year production cycles.

Supply support for XMC7541SCQ040XAAXUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive microcontrollers, and industrial control ICs, with global R&D centers and ISO/TS 16949-certified manufacturing.

This part belongs to the XMC1000 family - a series of ARM-based microcontrollers designed specifically for real-time industrial and power conversion applications, emphasizing analog integration, deterministic timing, and functional safety readiness.

FAQ

Does XMC7541SCQ040XAAXUMA1 support Qi v1.2.4 compliance out of the box?

No. While the device provides all necessary hardware resources-including USB, ADC, comparators, and PWM timers-Qi certification requires specific firmware implementation, protocol stack licensing, and third-party test lab validation. Infineon provides reference firmware and DAVE™ libraries to accelerate development, but final compliance is customer-responsible.

What is the maximum achievable switching frequency for resonant control using CCU8 timers?

The CCU8 module supports PWM generation up to 48 MHz input clock, enabling minimum pulse widths of ~20.8 ns. With appropriate gate driver selection and layout, practical resonant control frequencies reach 300–500 kHz for GaN-based transmitters, constrained by external power stage parasitics-not the MCU's timing resolution.

Is the on-chip temperature sensor calibrated across the full −40 °C to +125 °C range?

Yes. The sensor is factory-calibrated at two points (25 °C and 100 °C) and includes linearization coefficients stored in flash. Typical accuracy is ±2.5 °C from −20 °C to +100 °C, verified per Infineon's qualification testing per AEC-Q100 Grade 2 requirements.

Can the USB interface be used simultaneously with the UART for host communication and debug logging?

Yes. USB and UART are independent peripherals sharing no hardware resources. USB handles high-bandwidth packet exchange (e.g., Qi communication), while UART can be routed to an external debug probe or log interface-both active concurrently without conflict or performance degradation.