TLE92104-232QX

Updated: 2026-09-16

Overview

The TLE92104-232QX is an automotive-grade integrated circuit developed by Infineon Technologies for brushless DC (BLDC) and brushed motor control. Designed to meet stringent automotive reliability standards, it combines four half-bridge outputs with a SPI interface for configuration and diagnostics. Its 32-V operating range suits 12-V/24-V vehicle systems, while embedded features like overcurrent protection and open-load detection enhance system safety. Targeting body electronics applications, this driver IC reduces external component count through integrated charge pumps and gate drivers. The QFN-32 package ensures compact design compatibility with automated assembly processes, critical for high-volume automotive manufacturing.

Structure and Working Principle

The IC’s architecture comprises four independent half-bridge stages, each capable of driving high-side and low-side N-channel MOSFETs. A charge pump generates the necessary gate drive voltages, eliminating the need for external bootstrap capacitors. The SPI interface allows real-time current monitoring and fault reporting, enabling predictive maintenance in automotive systems. PWM input signals from a microcontroller modulate the output stages, providing precise speed and torque control. Integrated cross-conduction prevention ensures safe switching transitions, while synchronous rectification improves energy efficiency during motor braking phases.

Key Features

Key advantages include its AEC-Q100 Grade 1 qualification (-40°C to +150°C junction temperature) and <1-µA sleep mode current for reduced battery drain. The device supports 100% duty cycle operation and offers adjustable slew rate control to minimize EMI emissions—a critical requirement for automotive EMC compliance. Diagnostic capabilities cover short-to-battery/ground, overtemperature, and undervoltage lockout. The parallel control mode allows direct PWM input without SPI configuration, simplifying legacy system integration. These features collectively address ISO 26262 functional safety considerations.

Application Areas

Primary applications include automotive comfort systems such as power window lifters, sliding doors, and lumbar support adjustments. It’s also deployed in auxiliary pumps (e.g., coolant, fuel) and HVAC actuators. The IC’s robustness makes it suitable for agricultural and commercial vehicle systems exposed to vibration and temperature extremes. In electric vehicles, the TLE92104-232QX manages smaller auxiliary motors while interfacing with domain controllers via SPI. Its diagnostic outputs feed into vehicle telematics for predictive maintenance alerts, aligning with Industry 4.0 trends in automotive electronics.

Maintenance and Precautions

While the IC itself requires no routine maintenance, system designers should implement PCB thermal vias and adequate copper area for heat dissipation. Exposed pads must be properly soldered to act as thermal interfaces. Decoupling capacitors should be placed within 5 mm of supply pins to stabilize voltage during load transients. ESD precautions are critical during handling; use grounded workstations and anti-static packaging. Firmware should periodically check diagnostic registers to detect latent faults before they trigger hard failures. Avoid exceeding absolute maximum ratings, especially during load dump events.

B2B Procurement Guide

OEMs typically procure the TLE92104-232QX through authorized distributors like Arrow or Avnet, with MOQs starting at 1,000 units. Lead times vary from 8–12 weeks; consider buffer stock for just-in-time production. Request PPAP documentation for automotive production part approval. Evaluate alternative part numbers (e.g., TLE92104-232QX vs. TLE9201) based on channel count and interface requirements. For prototype development, Infineon offers evaluation boards (e.g., TLE92104-EVALKIT) priced at approximately $150–$300. Volume pricing tiers apply at 10k+ units, with potential for annual contracts in automotive programs.