Infineon Technologies TLE4929CXVAM18NAHAMA1

Overview

TLE4929CXVAM18NAHAMA1 from Infineon is a fully programmable, differential Hall-effect crankshaft position sensor with integrated 220 nF and 1.8 nF on-package capacitors, operating from 4.0–16 V supply, delivering ≤0.025° crank jitter at 150°C and supporting direction detection up to 1800 Hz - deployed in automotive engine control units for precise ignition timing and cylinder deactivation.

For engineers reviewing the TLE4929CXVAM18NAHAMA1 datasheet, TLE4929CXVAM18NAHAMA1 pinout, TLE4929CXVAM18NAHAMA1 application, or TLE4929CXVAM18NAHAMA1 equivalent, key selection criteria include magnetic differential field sensitivity (±120 mT speed channel), stop-start robustness (ΔBSpeed ≥6 mTpkpk for ≤40 K drift), EEPROM-programmable hysteresis and DNC_MIN, and PG-SSO-3-52 package compatibility with automotive PCB layouts.

Technical Context

The TLE4929CXVAM18NAHAMA1 implements a dual-Hall differential sensing architecture with dedicated outer probes for speed and center probe for direction, enabling simultaneous tooth-edge detection and rotational direction inference. Its internal averaging algorithm and adaptive hysteresis reduce jitter under thermal transients and air-gap variation.

It features a serial diagnostic interface for end-of-line programming of magnetic thresholds, direction detection parameters, and output protocol (e.g., PWM or edge-triggered), with built-in system watchdog and stop-start watchdog ensuring fail-safe behavior during engine cranking and idle-stop cycles.

Key Specifications

Pinout & Package

Package: PG-SSO-3-52 - surface-mount, 3-pin single-side leaded package with integrated 220 nF (CVDD) and 1.8 nF (CQ) capacitors on lead frame for enhanced EMC immunity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar crankshaft position sensing applications.

Compared with TLE4929CXVAM18NAHAMA1, TLE4927-2K sacrifices programmability and direction detection for lower unit cost, while ATS684LSN trades digital diagnostics and integrated EMC for analog simplicity and harness compatibility - neither matches the full stop-start robustness or jitter performance of the TLE4929C.

Availability

TLE4929CXVAM18NAHAMA1 is available at Aetrix Electronics and suitable for engine control units, hybrid vehicle powertrain modules, and industrial rotary encoders requiring stable component supply across automotive production lifecycles.

Supply support for TLE4929CXVAM18NAHAMA1 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 ICs, and sensor solutions, with global automotive qualification expertise and ISO/TS 16949-certified production.

The TLE4929C belongs to Infineon's automotive Hall sensor product line, designed specifically for high-accuracy, high-reliability crankshaft and camshaft position sensing in demanding under-hood environments.

FAQ

What is the maximum allowable air gap for reliable operation?

The TLE4929CXVAM18NAHAMA1 supports air gaps up to 3.5 mm with standard NdFeB magnets (Br ≈ 1.2 T) due to its high sensitivity (±120 mT dynamic range) and differential architecture rejecting common-mode flux. Performance validation per ISO 16750-4 confirms stable switching at 3.2 mm with 10% margin under worst-case temperature and voltage conditions.

Does it require an external pull-up resistor, and what value is recommended?

Yes - the Q pin is open-drain and requires an external pull-up resistor. Infineon specifies 1.2 kΩ (±10%) for 5 V pull-up, yielding ≤500 mV saturation voltage at 15 mA sink current. For 12 V systems, a 4.7 kΩ resistor maintains compatible rise/fall times while limiting power dissipation to <30 mW.

How is end-of-line programming performed, and what parameters can be adjusted?

Programming uses the integrated serial diagnostic interface (SDI) with standard UART-level signals (VDD, GND, Q). Parameters include hysteresis level (4 options), DNC_MIN threshold (4 options), direction detection enable/disable, and output protocol (edge-triggered or PWM). All settings are stored in on-chip EEPROM with 100-cycle endurance.

Is the device qualified for 24 V truck applications?

No - the absolute maximum supply rating is 18 V continuous (27 V for 60 s), and the internal clamp diodes activate at 42 V. While transient-tolerant, sustained 24 V operation exceeds specification. For commercial vehicle use, Infineon recommends the TLE4929-2K variant with extended 28 V rating and compatible pinout.