Infineon Technologies TLE6711GXUMA1

Overview

TLE6711GXUMA1 from Infineon is a multifunctional automotive power supply IC integrating a boost converter (programmable output up to 40 V), a buck converter (5 V ±2% output, short-circuit protected), digital window watchdog, power-on/off reset generator, and system enable output. It operates from -40 °C to +125 °C ambient, supports wide input voltage ranges (VBOOST: 4.5–36 V), and uses SPT® monolithic technology for bipolar/CMOS control with DMOS power stages.

For engineers reviewing the TLE6711GXUMA1 datasheet, TLE6711GXUMA1 pinout, TLE6711GXUMA1 application in engine control units or body electronics, or TLE6711GXUMA1 equivalent for AEC-Q100-compliant power management, this page delivers verified functional roles, validated pin definitions, thermal limits, watchdog timing behavior, and package-specific design constraints.

Technical Context

The device implements dual DC-DC regulation: a boost stage generating programmable high-side supply (VBOOST) and a precision 5 V buck regulator (VCC) with internal short-circuit protection. Its digital window watchdog uses oscillator-derived cycles (tCYL = 100 × fOSC period) with closed window (tCW = 32 cycles) and open window (tOW ≤ 32 cycles) timing, requiring two consecutive HIGH then two LOW samples on WDI for valid trigger detection.

Reset generation is synchronized to VCC crossing VRT (typ. 4.65 V) with tRD = 64 cycles delay and tRR glitch immunity; RO is open-drain with internal pull-up; SEN asserts on watchdog fault. All protections - boost/buck over- and under-voltage lockout, overtemperature shutdown (Tj > 150 °C), and ESD tolerance (±2 kV HBM) - are integrated and active during fault conditions.

Key Specifications

Pinout & Package

Package: PG-DSO-14-1 (14-pin plastic small-outline package, exposed pad, RoHS-compliant, green product).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multifunctional automotive power management applications.

Compared with TLF35584QVVS1 and MAX16922ATP+T, TLE6711GXUMA1 uniquely integrates boost + buck regulation in one PG-DSO-14-1 package, enabling compact high-voltage sensor/actuator support without external DC-DC stages - critical for cost-sensitive ECUs where space and BOM count are tightly constrained.

Availability

TLE6711GXUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across automotive production lifecycles.

Supply support for TLE6711GXUMA1 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.

The TLE6711 series belongs to Infineon's automotive power system IC portfolio, designed specifically to consolidate multiple power functions - boost/buck regulation, watchdog, reset, and fault signaling - into single-package solutions for ECU subsystems.

FAQ

What is the function of the R pin and how does it affect system timing?

The R pin sets the oscillator frequency by connecting an external resistor to GND. This frequency directly determines the watchdog cycle time (tCYL = 100 × oscillator period), reset delay (tRD = 64 cycles), and closed/open window durations. A 100 kΩ resistor yields ~64 kHz oscillator, resulting in ~1 ms watchdog timing resolution.

Can TLE6711GXUMA1 operate with battery voltage below 5 V, such as during cold-crank?

Yes - the boost converter activates when input voltage drops below the buck enable threshold. With VBOOST ≥ 4.5 V, the buck stage delivers regulated 5 V output even during cold-crank (down to ~3.5 V at battery terminals), ensuring uninterrupted MCU operation and watchdog supervision.

How does the digital window watchdog differ from standard timeout-based watchdogs?

It enforces strict timing windows: a closed window (32 cycles) followed by an open window (≤32 cycles). A valid trigger must occur in the open window; occurrence in the closed window causes pretrigger failure. This prevents false resets from spurious pulses and ensures deterministic fault detection aligned with MCU instruction cycles.

Is the PG-DSO-14-1 package thermally adequate for continuous 1 A buck output current?

At 1 A load and 125 °C ambient, junction temperature rise is ~120 K (Rthj-a = 120 K/W), reaching ~245 °C - exceeding absolute max rating. Derating is required: max continuous buck output is ~0.5 A at 125 °C ambient, or full 1 A only with forced air cooling or PCB copper thermal relief.