Infineon Technologies TLE82422LXUMA2

Overview

TLE82422LXUMA2 from Infineon Technologies is an 8-channel automotive-grade low-side constant current pre-driver IC for solenoid control, supporting both constant current mode (0–1.2 A, 11-bit programmable setpoint) and direct PWM mode with current profile detection, featuring SPI-controlled PI regulation (KP/KI), dither superposition, and phase synchronization across channels and devices.

For engineers reviewing the TLE82422LXUMA2 datasheet, TLE82422LXUMA2 pinout, TLE82422LXUMA2 application, or TLE82422LXUMA2 equivalent, key selection criteria include channel count, current resolution (0.781 mA/bit), diagnostic coverage (open load, overcurrent, short-to-ground), SPI message depth (20 register-accessible functions), and AEC-Q100 qualification for transmission solenoid systems.

Technical Context

The device implements a closed-loop PI controller per channel with programmable KP and KI coefficients, sampling up to 128 A/D conversions per PWM period (M = 32/64/128/512), where duty cycle is updated each period using error between commanded and measured average current. Current setpoint is calculated as (320 mV / Rsense) × 2¹¹, with Rsense = 0.2 Ω yielding 0–1200 mA range.

Current profile detection operates in three time-based zones during armature movement verification in Direct PWM mode; diagnostics are reported via SPI messages #4–#5 (fault status), #12–#14 (min/max/average current), and #18 (profile pass/fail). Synchronization uses PHASE_SYNC pin to align PWM edges across multiple ICs with configurable phase delay.

Key Specifications

Pinout & Package

PG-LQFP-64 package (10 mm × 10 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad; RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-channel automotive solenoid driver applications.

Compared with BD8242GUL-E2 and VN820SPTR-E, TLE82422LXUMA2 uniquely integrates per-channel PI control, dither superposition, and three-zone current profile detection-enabling verified mechanical actuation in safety-relevant transmission and emissions systems where open-loop drivers cannot meet functional safety requirements.

Availability

TLE82422LXUMA2 is available at Aetrix Electronics and suitable for automatic transmission control, exhaust gas recirculation systems, and suspension damping applications requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.

Supply support for TLE82422LXUMA2 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 automotive qualification infrastructure.

The TLE82422LXUMA2 belongs to Infineon's TLE automotive power driver family, designed specifically for high-reliability solenoid and actuator control in powertrain and chassis systems with integrated diagnostics and functional safety support.

FAQ

What is the maximum allowable sense resistor value for full 1.2 A output range?

The datasheet specifies 0.2 Ω as the nominal sense resistor for 0–1.2 A operation. Using a higher value (e.g., 0.3 Ω) reduces max current to 0.8 A (per I = 320 mV / Rsense × 2¹¹), while lower values (e.g., 0.1 Ω) increase current range to 2.4 A but require MOSFETs rated for higher conduction loss and thermal dissipation.

How does current profile detection verify solenoid armature movement?

It measures current rise/fall transients across three time zones after PWM edge transition: Zone 1 (initial rise), Zone 2 (steady-state dwell), and Zone 3 (decay). Pass/fail is determined by comparing measured current slopes and amplitudes against SPI-programmed thresholds-confirming mechanical motion, not just coil continuity.

Can TLE82422LXUMA2 drive N-channel MOSFETs with 3.3 V logic-level gates?

Yes-the OUTx pins deliver rail-to-rail gate drive compatible with 3.3 V and 5.0 V logic. However, external MOSFETs must be logic-level types (e.g., SPD15N06S2L-64) with R_DS(on) ≤ 100 mΩ at V_GS = 4.5 V to ensure sufficient current delivery and thermal margin at 1.2 A continuous.

Is PHASE_SYNC pin required for single-device operation?

No-PHASE_SYNC is optional. In standalone use, PWM timing is internally generated. The pin is only needed when synchronizing multiple TLE82422LXUMA2 ICs (e.g., in multi-solenoid modules) to eliminate beat frequencies and reduce conducted EMI in shared power domains.