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Infineon Technologies TLE4955CE41184XAMA1
- Part No.:
- TLE4955CE41184XAMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- 2-SIP, SSO-2-53
- Datasheet:
-
TLE4955CE41184XAMA1.pdf
- Description:
- MAG SWITCH SPEC PURP SSO-2-53
- Quantity:
- Payment:
- Shipping:
Inventory:1,496
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Product details
Overview
TLE4955CE41184 from Infineon Technologies is a differential Hall effect transmission speed sensor IC with two-wire PWM current output interface, designed for ferromagnetic tooth wheel and magnetic encoder applications in automotive transmissions. It delivers rotational speed up to 12 kHz, direction detection via 90° phase-shifted signals, and operates across –40 °C to +150 °C with AEC-Q100 qualification.
For engineers reviewing the TLE4955CE41184 datasheet, TLE4955CE41184 pinout, TLE4955CE41184 application, or TLE4955CE41184 equivalent, key selection criteria include back-bias compatibility, adaptive hysteresis tuning for vibration suppression, ΔBdir-limit optimization for direction channel accuracy, integrated 1.8 nF X8R capacitor, and PG-SSO-2-53 package suitability for high-shock transmission environments.
Technical Context
The device implements a three-Hall-element architecture (B1, B2, B3) to compute differential speed signal ΔBspeed = B2 − B1 and direction signal ΔBdir = B3 − (B2 + B1)/2. Its digital core executes real-time offset correction, peak detection, and adaptive hysteresis control based on instantaneous magnetic amplitude.
Vibration suppression operates through dual mechanisms: adaptive hysteresis thresholds scaled to 25% of ΔBspeed (min ΔBspeed-limit), and independent direction-based vibration detection logic. The self-calibration algorithm transitions the device from uncalibrated mode (DNC = 2×ΔBspeed-limit) to calibrated mode (DNC = ΔBspeed/2) after detecting two valid magnetic extrema.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Interface | Two-wire PWM current output (ILow/ILow switching between 7 mA and 14 mA) |
| Speed Range | DC to 12 kHz - enables zero-speed detection and high-resolution gear monitoring |
| Operating Temperature | –40 °C to +150 °C - qualified for under-hood transmission control unit placement |
| Magnetic Sensitivity | ΔBspeed-limit ≤ 12 mT - supports large airgap operation with robust signal-to-noise ratio |
| Integrated Capacitor | 1.8 nF ±10%, X8R ceramic, 50 V rated - reduces external decoupling component count |
| Direction Detection | 90° phase shift between speed and direction outputs - enables unambiguous clockwise/counterclockwise identification |
| AEC-Q100 Grade | Grade 0 - validated for automotive powertrain safety-critical applications |
Pinout & Package
Package: PG-SSO-2-53 - surface-mount, 2-pin, overmolded module-style package with integrated capacitor and green RoHS-compliant plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply input (via current loop) | Receives regulated 5 V supply through external current-limiting resistor; powers internal bandgap, ADC, and logic |
| GND | Ground reference | Common return path for Hall elements, analog front-end, and current output stage |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic self-calibration | Real-time offset correction using dual-extrema detection - eliminates thermal drift-induced false triggers |
| Adaptive hysteresis | Hysteresis level automatically scales to 25% of ΔBspeed amplitude - suppresses vibration-induced chatter without sacrificing airgap margin |
| Back-bias optimization | ΔBdir-limit tuned specifically for south/north pole pre-induction - ensures reliable direction sensing in magnetically constrained layouts |
| Vibration suppression | Dual-path algorithm combining hysteresis adaptation and direction-signal correlation - maintains timing integrity under 50 g mechanical shock |
| Integrated decoupling | 1.8 nF X8R capacitor embedded in PG-SSO-2-53 package - eliminates need for external bypass capacitor on PCB |
Applications
| Automatic Transmission Gear Monitoring | Electric Power Steering Motor Position |
|---|---|
Use Scenario: Real-time detection of input/output shaft rotation in 8-speed automatic transmissions using ferromagnetic tooth wheels. IC Role / Device Role / Timing Role: Differential Hall sensor providing synchronized speed and direction pulses to TCU for torque converter lock-up and shift scheduling. Use Value: Enables sub-1° angular resolution at standstill and 12 kHz bandwidth during high-RPM shifts, reducing shift delay by ≥15 ms vs. legacy single-Hall sensors. | Use Scenario: Direction-aware rotor position feedback for EPS motor commutation in rack-and-pinion steering systems. IC Role / Device Role / Timing Role: Back-biased Hall sensor delivering phase-aligned speed/direction signals to EPS MCU for precise field-oriented control. Use Value: Eliminates need for separate direction sensor; 90° phase shift allows deterministic rotor quadrant identification without interpolation. |
| Hybrid Vehicle e-Axle Speed Sensing | Commercial Vehicle Dual-Clutch Transmission |
Use Scenario: High-vibration speed and direction sensing on electric axle reduction gears exposed to road-induced shock and thermal cycling. IC Role / Device Role / Timing Role: AEC-Q100 Grade 0 differential sensor with integrated 1.8 nF capacitor, operating from –40 °C to +150 °C. Use Value: Maintains signal integrity under 30 g broadband vibration (5–2000 Hz); eliminates capacitor solder joint fatigue failure modes. | Use Scenario: Dual-sensor setup on input and output shafts of DCTs to enable predictive clutch engagement timing. IC Role / Device Role / Timing Role: Synchronized pair of TLE4955CE41184 sensors delivering time-stamped direction pulses to transmission ECU. Use Value: Phase coherence between sensors enables <5 µs inter-channel skew - critical for torque vectoring algorithms requiring <100 µs response latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential Hall speed and direction sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE4955C-E4 | No integrated capacitor; requires external 1.8 nF decoupling; less optimized ΔBdir-limit and vibration suppression | Suitable for lower-cost modules where board space permits external capacitor and vibration levels are <15 g | Select when cost sensitivity outweighs layout simplification and extreme vibration immunity requirements |
| ATS684LSG-T | Single-output speed-only interface; no direction channel; uses SENT protocol instead of PWM current loop | Applicable only where direction information is derived externally or not required | Choose only if system architecture already uses SENT receivers and direction is inferred via dual-sensor timing or controller-side logic |
Compared with TLE4955C-E4, the TLE4955CE41184 offers superior integration (capacitor), tighter direction-channel tuning, and enhanced vibration resilience - making it preferred for high-shock transmission environments. Versus ATS684LSG-T, it provides native direction output and two-wire simplicity but lacks SENT diagnostics capability.
Availability
TLE4955CE41184 is available at Aetrix Electronics and suitable for automatic transmission control units, electric power steering systems, hybrid e-axle monitoring, and commercial vehicle dual-clutch transmissions requiring stable component supply across extended temperature and high-vibration conditions.
Supply support for TLE4955CE41184 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 sensor solutions, with global R&D and manufacturing infrastructure.
The TLE4955C product line targets high-reliability automotive transmission and powertrain applications, delivering differential Hall sensing with integrated signal conditioning, vibration resilience, and AEC-Q100 compliance.
FAQ
What is the function of the integrated 1.8 nF capacitor in the TLE4955CE41184 package?
The integrated 1.8 nF ±10% X8R ceramic capacitor is connected between VDD and GND inside the PG-SSO-2-53 overmolded package. It provides local high-frequency decoupling for the analog front-end and digital core, eliminating the need for an external bypass capacitor on the PCB and improving reliability in high-vibration environments where solder joints may fatigue.
How does the TLE4955CE41184 achieve direction detection without additional sensors?
It uses three integrated Hall elements arranged in a precise geometry to compute ΔBspeed = B2 − B1 and ΔBdir = B3 − (B2 + B1)/2. The resulting speed and direction signals exhibit a fixed 90° phase shift when paired with a standard ferromagnetic tooth wheel, enabling unambiguous rotational direction determination from a single device output waveform.
Is the TLE4955CE41184 compatible with both north and south pole back-biasing configurations?
Yes - the device supports either south or north pole pre-induction on the unmarked rear side of the PG-SSO-2-53 package. This flexibility simplifies mechanical integration in constrained transmission housings where magnet orientation may vary due to assembly tolerances or thermal expansion effects.
What distinguishes the TLE4955CE41184 from the base TLE4955C-E4 variant?
The TLE4955CE41184 features optimized ΔBdir-limit for improved direction channel accuracy, enhanced vibration suppression algorithms, refined adaptive hysteresis levels, and an integrated 1.8 nF decoupling capacitor - all tailored for demanding back-bias transmission applications where the base E4 variant lacks these specific calibrations and integrations.
TLE4955CE41184XAMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- TLE
- Package/Case:
- 2-SIP, SSO-2-53
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Function:
- Special Purpose
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- -30mT Trip, 30mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 4V ~ 20V
- Current - Supply (Max):
- 16mA
- Current - Output (Max):
- -
- Output Type:
- Current Source
- Features:
- -
- Operating Temperature:
- -40°C ~ 110°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PG-SSO-2-53
TLE4955CE41184XAMA1 FAQ
1.How can I place an order for TLE4955CE41184XAMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4955CE41184XAMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLE4955CE41184XAMA1 reliable?
The price and inventory of TLE4955CE41184XAMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4955CE41184XAMA1 is usually 5 days.
3.What payment methods are accepted for TLE4955CE41184XAMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4955CE41184XAMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4955CE41184XAMA1?
TLE4955CE41184XAMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4955CE41184XAMA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLE4955CE41184XAMA1?
For technical support, including TLE4955CE41184XAMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4955CE41184XAMA1 requirements.
6.How does Aetrix verify that TLE4955CE41184XAMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4955CE41184XAMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE4955CE41184XAMA1 meets industry standards.
7.What is the process for return or replacement of TLE4955CE41184XAMA1?
All TLE4955CE41184XAMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4955CE41184XAMA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLE4955CE41184XAMA1 part is unused and in its original packaging.
Return procedure for TLE4955CE41184XAMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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