Infineon Technologies TLE5046ICPWM2ER100HALA1

Overview

TLE5046ICPWM2ER100HALA1 from Infineon is a high-end GMR-based wheel speed sensor with integrated direction detection, ASIL B(D) compliance, 0.02% period jitter, -40°C to 190°C junction temperature range, and two-wire PWM current interface optimized for R_m = 50–100 Ω load resistors-used in ABS, ESC, and indirect TPMS systems.

For engineers reviewing the TLE5046ICPWM2ER100HALA1 datasheet, TLE5046ICPWM2ER100HALA1 pinout, TLE5046ICPWM2ER100HALA1 application, or TLE5046ICPWM2ER100HALA1 equivalent, key selection criteria include magnetic field immunity (±2 mT), air gap performance, stop-start robustness via Micro Break and watchdog, and failure indication at 1–3.8 mA error current.

Technical Context

The TLE5046ICPWM2ER100HALA1 implements differential GMR sensing for x-direction magnetic field detection, enabling precise zero-crossing tracking of sinusoidal encoder signals up to 3 kHz while rejecting homogeneous external disturbances ≤ ±2 mT. Its dual-path architecture independently validates speed and direction events to prevent false pulses during start-stop transitions.

It uses a two-wire PWM protocol where pulse widths encode direction (DR-L/DR-R), standstill (t_Stop = 1.232–1.656 ms), and error states (t_Warning = 38–52 µs). Internal safety mechanisms-including undervoltage detection, clock monitoring, and ADC clipping verification-support ASIL B(D) compliance without external components.

Key Specifications

Pinout & Package

Package: PG-SSO-2-1 (5 mm × 3 mm, 2-pin SSO package with exposed thermal pad).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar wheel speed sensing applications.

Compared with MPXY8300 and A19351, the TLE5046ICPWM2ER100HALA1 delivers superior jitter performance, broader temperature capability, and embedded direction validation-making it the only option qualified for iTPMS and ASIL D–ready ESC architectures requiring zero-speed reliability.

Availability

TLE5046ICPWM2ER100HALA1 is available at Aetrix Electronics and suitable for ABS, ESC, and iTPMS applications requiring stable component supply, long-term automotive qualification, and ASIL B(D) compliance.

Supply support for TLE5046ICPWM2ER100HALA1 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 automotive, power management, and sensor solutions, with over 30 years of automotive IC leadership.

The TLE5046iC belongs to Infineon's high-reliability wheel speed sensor product line, engineered specifically for next-generation chassis control systems demanding ASIL-compliant direction-aware speed measurement under extreme thermal and EMI stress.

FAQ

What is the maximum allowable air gap for reliable operation?

The TLE5046ICPWM2ER100HALA1 maintains valid signal integrity up to 1.8 mm air gap with standard 2-pole encoder wheels at 25°C, and ≥1.2 mm at 190°C junction temperature. This is enabled by its high GMR sensitivity (90 µT typical dBlimit_x) and differential topology rejecting y-displacement effects.

Does this part require an external decoupling capacitor?

No. The TLE5046ICPWM2ER100HALA1 integrates all necessary filtering and regulation circuitry, eliminating the need for external capacitors. This reduces PCB area, improves mechanical robustness against vibration, and removes capacitor-related failure modes in under-hood environments.

How does the Micro Break feature improve start-stop performance?

Micro Break actively monitors supply transients during engine cranking and prevents false direction resets by maintaining internal state through voltage dips down to 3.5 V. It ensures uninterrupted direction tracking across stop-start cycles without requiring reinitialization or secondary synchronization pulses.

What failure conditions trigger the 1–3.8 mA error current output?

The error current activates for undervoltage (VDD < 3.5 V), clock malfunction (<25% nominal frequency), mismatched fuse counts, consecutive speed/direction path discrepancies, ADC clipping, or critical air gap detection. Each condition forces immediate I_Error assertion without delay or external intervention.