Infineon Technologies TLF11251EPXUMA1

Overview

TLF11251EPXUMA1 from Infineon Technologies is an AEC-Q100 Grade 0 automotive PMIC half-bridge IC integrating complementary P/N-channel MOSFETs (2.5 A continuous), gate drivers, level shifter, and dead-time logic. It delivers core voltage regulation for AURIX™ TC3xx microcontrollers in high-temperature powertrain systems, with output current sensing, overcurrent protection, and overtemperature shutdown.

For engineers reviewing the TLF11251EPXUMA1 datasheet, TLF11251EPXUMA1 pinout, TLF11251EPXUMA1 application, or TLF11251EPXUMA1 equivalent, key selection criteria include its integrated level-shifting control interface, dual-MOSFET thermal robustness up to 150 °C junction, and synchronous low-side control via LSCON pin - critical for closed-loop buck regulation in engine management and battery management systems.

Technical Context

The TLF11251EPXUMA1 implements a single-input PWM-controlled half-bridge topology with internal dead time generation between high-side (P-channel) and low-side (N-channel) switches. Its level shifter converts CMOS-compatible input logic (VCC-referenced) to VS-referenced gate drive signals, enabling direct interfacing with AURIX™ TC3xx core regulators without external timing circuitry.

Protection is implemented at silicon level: overcurrent detection on both high- and low-side paths triggers current limiting (4.4 A pulsed), while thermal shutdown activates at 150 °C junction temperature. Internal power-on reset ensures reliable digital logic initialization across the full -40 °C to 150 °C operating range.

Key Specifications

Pinout & Package

TLF11251EPXUMA1 is housed in PG-TSDSO-14 package with exposed thermal pad (heat sink pin). The 14-pin SOIC variant features integrated thermal vias and GND/PGND separation optimized for high-current switching stability and thermal dissipation in automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar half-bridge driver applications.

Compared with TLF11250EPXUMA1 and IRS2007MTRPBF, the TLF11251EPXUMA1 uniquely combines AEC-Q100 Grade 0 qualification, integrated MOSFETs, and programmable synchronous control - making it the only solution that satisfies full ASIL-B/D core rail requirements for AURIX™ TC3xx in powertrain domains without external timing or protection components.

Availability

TLF11251EPXUMA1 is available at Aetrix Electronics and suitable for car powertrain and transmission applications, electric power steering, and battery management systems requiring stable component supply, long-term automotive lifecycle support, and traceable RoHS-compliant sourcing.

Supply support for TLF11251EPXUMA1 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 industrial control ICs, with global manufacturing and quality certification aligned to ISO/TS 16949 and IATF 16949 standards.

The OPTIREG™ PMIC product line targets automotive power subsystems, specifically engineered to deliver highly integrated, AEC-Q100-qualified voltage regulation solutions for AURIX™ microcontrollers and other safety-critical ECUs.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The TLF11251EPXUMA1 is rated for continuous operation up to 150 °C junction temperature and qualified per AEC-Q100 Grade 0. This rating is validated through accelerated life testing and thermal characterization across the full -40 °C to +150 °C ambient range, with thermal shutdown engaging above this threshold to prevent permanent damage.

Does the device support synchronous rectification, and how is it enabled?

Yes - synchronous rectification is enabled via the LSCON pin. When LSCON is driven high, the low-side N-channel MOSFET is actively controlled in sync with the PWM signal; when pulled low, the low side operates in diode-emulation mode. This configuration allows dynamic efficiency optimization based on load conditions without changing hardware.

Can TLF11251EPXUMA1 be used with 3.3 V microcontrollers?

Yes - the V_CC pin accepts 3.3 V nominal supply, and the PWM and LSCON inputs are CMOS-compatible with logic thresholds referenced to V_CC. The internal level shifter translates these signals to the higher V_S domain (up to 7.0 V), enabling direct interface with 3.3 V AURIX™ TC3xx GPIOs without level-shifting buffers.

Is external current sensing required for overcurrent protection?

No - overcurrent protection is fully integrated and operates on-chip using internal sense FETs. The device monitors current in both high-side and low-side paths and triggers automatic current limiting (4.4 A pulsed) without requiring external sense resistors, op-amps, or comparator circuits.