Infineon Technologies TLE4205G

Overview

TLE4205G from Infineon Technologies is an AEC-Q100 qualified automotive-grade full-bridge DC motor driver IC designed for headlight beam adjustment systems. It delivers 1 A continuous output current per channel, integrates freewheeling diodes to VS and GND, features short-circuit protection up to 18 V supply-to-ground, and operates across –40 °C to +150 °C junction temperature.

For engineers reviewing the TLE4205G datasheet, TLE4205G pinout, TLE4205G application, or TLE4205G equivalent, key selection criteria include its dual-comparator architecture enabling full-bridge control, inhibit-driven low-power standby mode (100 µA), thermal shutdown at ~160 °C, and PG-DSO-20 package compatibility with automotive PCB layout constraints.

Technical Context

The TLE4205G implements two independent high-gain PNP-input comparators (80 dB @ 500 Hz) with rail-to-rail common-mode input range (0 V to VS–2 V) and ±VS differential input capability. Each comparator drives a push-pull output stage with integrated freewheeling diodes and SOA-based short-circuit protection to ground.

Its full-bridge operation is achieved by externally wiring the four inputs (+I1/–I1/+I2/–I2) to generate complementary drive signals for Q1 and Q2 outputs. The INH pin enables system-level power gating, reducing quiescent current to 100 µA while maintaining input bias integrity.

Key Specifications

Pinout & Package

Package: PG-DSO-20 (20-pin exposed-pad thermally enhanced SOIC variant, RoHS-compliant, AEC-Q100 qualified).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar full-bridge DC motor driver applications.

Compared with BTS716G and VNQ7E100AJ, the TLE4205G uniquely integrates dual comparators and full-bridge output stages in one PG-DSO-20 package-enabling direct microcontroller-less motor direction control with minimal external components, ideal for cost-sensitive, thermally demanding automotive actuators.

Availability

TLE4205G is available at Aetrix Electronics and suitable for headlight beam adjustment, power seat actuation, electric parking brake auxiliary functions, and climate control flap actuation requiring stable component supply across automotive production lifecycles.

Supply support for TLE4205G 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 AEC-Q100 validation infrastructure.

The TLE4205G belongs to Infineon's TLE automotive linear driver product line, engineered specifically for robust, low-component-count DC motor control in safety-critical vehicle subsystems operating under extreme thermal and electrical stress.

FAQ

What is the maximum safe supply voltage for continuous operation?

The TLE4205G supports continuous operation up to 32 V supply voltage, but short-circuit protection is guaranteed only up to 18 V supply-to-ground. For systems subject to ISO 7637-2 pulse 5a (load dump), external clamping (e.g., TVS diode) is required above 32 V to prevent damage to the VS pin and internal circuitry.

Can the TLE4205G drive inductive loads without external freewheeling diodes?

Yes - the TLE4205G integrates bidirectional freewheeling diodes from each output (Q1/Q2) to both VS and GND. This eliminates the need for external diodes in standard H-bridge configurations, provided the load inductance and switching frequency remain within datasheet-specified energy dissipation limits (≤3 W total package power).

How does the inhibit (INH) function interact with thermal shutdown?

When INH is active (open or grounded), the IC disables all outputs and reduces supply current to 100 µA, but internal bandgap and thermal sensing circuits remain powered. If junction temperature exceeds ~160 °C during inhibit, the thermal shutdown still activates - holding outputs off until cooldown - ensuring safety even in low-power states.

Is the TLE4205G pin-compatible with earlier TLE4205 variants?

No - the TLE4205G uses the PG-DSO-20 package with 20 pins and specific pin assignments (e.g., eight GND pins, dual comparator inputs). Earlier TLE4205 versions used smaller packages (e.g., PG-DSO-14) with different pin counts and functions; direct replacement requires PCB redesign and signal routing verification.