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Infineon Technologies TLE4954CE4807BAMA1
- Part No.:
- TLE4954CE4807BAMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Linear, Compass (ICs)
- Package:
- -
- Datasheet:
-
TLE4954CE4807BAMA1.pdf
- Description:
- SPEED & CURRENT SENSORS
- Quantity:
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- Shipping:
Inventory:7,500
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Product details
Overview
TLE4954CE4807BAMA1 from Infineon Technologies is a differential Hall-effect transmission speed sensor IC with integrated back bias magnet, two-wire PWM current interface, and vibration-suppressing algorithm. It delivers rotational speed and direction signals to transmission control units, operates from 4 V to 20 V, supports up to 12 kHz (CW) directional sensing, and maintains airgap performance down to ±120 mT magnetic field range.
For engineers reviewing the TLE4954CE4807BAMA1 datasheet, TLE4954CE4807BAMA1 pinout, TLE4954CE4807BAMA1 application, or TLE4954CE4807BAMA1 equivalent, key selection criteria include PWM timing parameters (tpre-low = 45 µs, tcw = 90 µs), ESD robustness (±12 kV), junction temperature range (–40 °C to +170 °C), and differential magnetic offset cancellation for ferromagnetic tooth-wheel sensing in automotive powertrain systems.
Technical Context
The TLE4954CE4807BAMA1 implements a three-Hall-element differential architecture with self-calibrating offset cancellation for mechanical and magnetic drift. Its output uses a two-wire PWM current interface where pulse width encodes speed and phase shift (90° between speed and direction signals) encodes rotation direction.
Vibration suppression operates via dual mechanisms: hysteresis-based rejection immediately after power-on, and direction-detection-based suppression after startup calibration. Direction evaluation is active only below fDR,max and reverts to speed-only mode above that threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4 V to 20 V - powers directly from vehicle battery without external regulator |
| Operating Junction Temp | –40 °C to +170 °C - qualified for under-hood automotive transmission environments |
| Magnetic Range (ΔB) | ±120 mT - supports wide airgap tolerance with ferromagnetic tooth wheels |
| Directional Frequency Limit | Up to 12 kHz (CW), 8 kHz (CCW) - enables high-resolution gear position tracking |
| ESD Robustness | ±12 kV HBM - withstands assembly and service-level electrostatic discharge events |
| Pre-Low Time (tpre-low) | 45 µs - ensures reliable internal signal conveyance before PWM edge generation |
| Output Slew Rate | 17 mA/µs - controls rise/fall times for noise-immune current-loop signaling |
Pinout & Package
Package: PG-SSOM-2-11 - surface-mount, molded plastic package with exposed thermal pad, optimized for automotive under-hood mounting and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply input | Connects to 4–20 V battery rail; internal overvoltage protection active above 20 V |
| GND | Ground reference | Return path for supply and output current; must be low-impedance for PWM stability |
| OUT | PWM current output | Sinks modulated current (7–14 mA) onto shared wire; no external pull-up required |
Key Features
| Feature | Design Value |
|---|---|
| Differential 3-Hall sensing | Eliminates common-mode magnetic interference and mechanical misalignment errors |
| Integrated back bias magnet | Enables single-component mounting without external magnet assembly or polarity alignment |
| Vibration suppression (dual-mode) | Rejects angular/airgap-induced false pulses via hysteresis + direction validation |
| Two-wire PWM interface | Reduces wiring harness cost and weight; shares power and signal on single conductor |
| Self-calibrating offset cancellation | Compensates for thermal drift and packaging stress without factory trimming or EEPROM |
Applications
| Automatic Transmission Gear Sensing | CVT Ratio Position Detection |
|---|---|
Use Scenario: Monitoring rotating shafts and gear teeth in planetary gearsets to determine gear engagement state and ratio. IC Role / Device Role / Timing Role: Differential Hall sensor providing synchronized speed and direction pulses with 90° phase shift for real-time gear logic decoding. Use Value: Enables precise clutch actuation timing and shift quality control by resolving direction-dependent tooth transitions at up to 12 kHz. | Use Scenario: Detecting pulley rotation direction and speed in continuously variable transmissions to compute effective gear ratio. IC Role / Device Role / Timing Role: Back-biased Hall sensor delivering calibrated PWM current output with vibration-resistant direction flag for ratio calculation algorithms. Use Value: Maintains accurate ratio feedback across wide temperature and airgap variations due to integrated magnet and self-calibration. |
| Electric Power Steering Motor Commutation | Hybrid Powertrain Motor Rotor Position |
Use Scenario: Providing rotor position feedback for brushless DC motor commutation in EPS systems where space and EMI immunity are critical. IC Role / Device Role / Timing Role: Two-wire Hall sensor supplying direction-aware speed pulses to MCU for six-step commutation sequencing. Use Value: Eliminates separate direction sensor and reduces harness complexity while meeting ASIL-B functional safety requirements. | Use Scenario: Monitoring high-speed motor shaft rotation in hybrid electric drivetrains for torque vectoring and regenerative braking control. IC Role / Device Role / Timing Role: High-junction-temp Hall IC delivering jitter-controlled PWM output (≤4.2% period jitter) for precise rotor angle estimation. Use Value: Supports closed-loop motor control up to 12 kHz with stable timing under thermal stress (Tj ≤ 170 °C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential Hall speed sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE4954CB-E2 | Identical PG-SSOM-2-11 package and back-bias magnet; tpre-low = 45 µs, tcw = 90 µs, tccw = 180 µs | Same directional sensing capability but fixed timing profile - no programmable variants | Select when standardized timing and full production qualification are prioritized over variant flexibility |
| TLV4954C | Lower max junction temp (150 °C vs. 170 °C); same PWM interface and 3-Hall architecture; no integrated magnet | Requires external magnet assembly; unsuitable for under-hood transmission locations exceeding 150 °C | Select only for non-powertrain applications with controlled thermal environment and magnet integration capability |
Compared with TLE4954CB-E2 and TLV4954C, the TLE4954CE4807BAMA1 offers the highest thermal rating and factory-integrated magnet-critical for direct-mount transmission applications-while retaining identical timing behavior to the E2 variant and avoiding external magnet alignment risk.
Availability
TLE4954CE4807BAMA1 is available at Aetrix Electronics and suitable for automatic transmission gear sensing, CVT ratio detection, electric power steering commutation, and hybrid powertrain motor position monitoring requiring stable component supply across extended temperature and ESD stress conditions.
Supply support for TLE4954CE4807BAMA1 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 manufacturing and automotive qualification expertise.
The TLE4954C/51C product line targets high-reliability transmission and drivetrain sensing, designed specifically for differential speed-and-direction measurement in harsh automotive environments using robust Hall-effect physics and integrated signal conditioning.
FAQ
What is the function of the pre-low time (tpre-low) in the TLE4954CE4807BAMA1 PWM output?
The pre-low time (45 µs) is a fixed delay between magnetic transition detection and the rising edge of the output current pulse. It ensures internal signal processing completes before PWM edge generation, preventing false triggering from transient magnetic noise or incomplete hysteresis settling. This timing is factory-trimmed and invariant across operating conditions.
Does the TLE4954CE4807BAMA1 require an external magnet?
No. The "B" suffix and "CB" designation confirm an integrated back bias magnet is permanently attached to the rear side of the PG-SSOM-2-11 package. South or north pole orientation is supported, eliminating magnet handling, polarity verification, and mechanical alignment during assembly.
How does vibration suppression operate in the TLE4954CE4807BAMA1?
Vibration suppression uses two independent methods: hysteresis-based rejection active immediately after power-on, and direction-detection-based suppression enabled after startup calibration. The latter identifies parasitic signals by comparing phase relationship between speed and direction outputs, suppressing pulses inconsistent with physical rotation dynamics.
What defines the maximum usable airgap for the TLE4954CE4807BAMA1?
The maximum airgap is determined by the ±120 mT magnetic field range specification and the strength of the integrated back bias magnet. With a standard 5 mm pitch ferromagnetic tooth wheel, the device maintains reliable switching up to 2.5 mm airgap - verified per Infineon's reference target wheel geometry and test conditions in the official datasheet.
TLE4954CE4807BAMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- -
- Axis:
- -
- Output Type:
- -
- Sensing Range:
- -
- Voltage - Supply:
- -
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Resolution:
- -
- Bandwidth:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
TLE4954CE4807BAMA1 FAQ
1.How can I place an order for TLE4954CE4807BAMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4954CE4807BAMA1 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 TLE4954CE4807BAMA1 reliable?
The price and inventory of TLE4954CE4807BAMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4954CE4807BAMA1 is usually 5 days.
3.What payment methods are accepted for TLE4954CE4807BAMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4954CE4807BAMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4954CE4807BAMA1?
TLE4954CE4807BAMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4954CE4807BAMA1 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 TLE4954CE4807BAMA1?
For technical support, including TLE4954CE4807BAMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4954CE4807BAMA1 requirements.
6.How does Aetrix verify that TLE4954CE4807BAMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4954CE4807BAMA1 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 TLE4954CE4807BAMA1 meets industry standards.
7.What is the process for return or replacement of TLE4954CE4807BAMA1?
All TLE4954CE4807BAMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4954CE4807BAMA1, 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 TLE4954CE4807BAMA1 part is unused and in its original packaging.
Return procedure for TLE4954CE4807BAMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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