Infineon Technologies TLE7186FXUMA1

Overview

TLE7186FXUMA1 from Infineon Technologies is an automotive-grade system IC for 3-phase B6 motor drives, integrating six N-channel MOSFET gate drivers, a 5 V low-dropout regulator (VREG), analog temperature monitoring, digital phase voltage feedback (U_fb/V_fb/W_fb), and configurable short-circuit/over-temperature/under-voltage protection. It supports brushless DC (BLDC) and brushed DC motors in engine cooling fans, HVAC blowers, and power steering assist modules.

For engineers reviewing the TLE7186FXUMA1 datasheet, TLE7186FXUMA1 pinout, TLE7186FXUMA1 application, or TLE7186FXUMA1 equivalent, key selection criteria include dead-time adjustability via DT pin, analog short-circuit threshold setting via SCDL, bootstrap-capable high-side driver architecture (BH1–BH3), and AEC-Q100 qualification for under-hood automotive use.

Technical Context

The TLE7186FXUMA1 implements a fully integrated B6 half-bridge driver with three independent floating high-side stages (GH1–GH3, SH1–SH3, BH1–BH3) and three low-side outputs (GL1–GL3, SL), each with shoot-through prevention and adjustable dead time. Its internal 5 V regulator (VDD) powers external microcontrollers while maintaining ±2% output accuracy over load and temperature.

Phase voltage feedback is delivered digitally via U_fb/V_fb/W_fb pins synchronized to PWM edges, enabling precise commutation timing. Protection logic includes analog temperature sensing (TEMP), open-drain ERR flag assertion on OTSD/VDD_UVSD/OCSD events, and dual-level overvoltage detection (IOV, VDH_OVSD) with configurable thresholds.

Key Specifications

Pinout & Package

Package: PG-VQFN-48 (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad connected to GND for enhanced heat dissipation in high-power motor drive applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-phase B6 motor driver applications.

Compared with DRV3205A-Q1 and STSPIN32F0A, the TLE7186FXUMA1 uniquely combines AEC-Q100 Grade 1 qualification, analog temperature monitoring, and externally adjustable short-circuit detection in a single PG-VQFN-48 package - making it optimal for safety-critical, thermally demanding BLDC drives where hardware-level diagnostics are mandatory.

Availability

TLE7186FXUMA1 is available at Aetrix Electronics and suitable for engine cooling fan control, HVAC blower motor drive, and electric power steering assist applications requiring stable component supply across automotive production lifecycles.

Supply support for TLE7186FXUMA1 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 IATF 16949.

The TLE7186FXUMA1 belongs to Infineon's TLE family of automotive system ICs, designed specifically to reduce bill-of-materials and PCB area in 3-phase motor control applications while delivering robust protection and diagnostic capability.

FAQ

What is the maximum allowable VS supply voltage during load dump transients?

The TLE7186FXUMA1 withstands load dump transients up to 40 V for 400 ms per ISO 7637-2 Pulse 5a, with internal clamping protecting internal circuits. External TVS diode is still recommended for long-term reliability in harsh environments.

How does the SCDL pin configure short-circuit detection thresholds?

The SCDL pin accepts an external voltage (0.5–2.5 V) that sets the current-sense comparator threshold for OCSD. For example, 1.25 V on SCDL corresponds to ~12.5 A sensed current with a 10 mΩ shunt, enabling motor-specific fault sensitivity without firmware changes.

Can the TLE7186FXUMA1 operate without external bootstrap capacitors?

No - BH1–BH3 pins require external 100 nF ceramic capacitors to sustain high-side gate drive during continuous conduction. Omitting them causes GHx outputs to collapse after initial charge, resulting in loss of high-side functionality and potential shoot-through.

Is the ERR pin compatible with 3.3 V microcontrollers?

Yes - the ERR pin is open-drain with 5 V tolerant pull-up capability. When pulled to 3.3 V, it asserts low at <0.4 V, meeting standard CMOS logic thresholds and enabling direct interfacing with 3.3 V MCUs without level-shifting.