TLE94112EL

The Infineon TLE94112EL is a protected twelve-channel half-bridge driver specifically engineered for automotive motion control applications, such as HVAC flap DC motor control. This device is part of a family offering half-bridge drivers with varying output counts and interface options.

The TLE94112EL is designed to drive DC motor loads in sequential or parallel operations, supporting forward, reverse, brake, and high impedance modes controlled via a 16-bit SPI interface. It includes comprehensive diagnosis features like short circuit, open load, power supply failure, and overtemperature detection. The device operates within a normal voltage range of 5.5 to 18 V, with an extended range up to 20 V, and a logic supply voltage of 3.0 to 5.5 V. It also features load dump protection up to 40 V.

Key electrical specifications include a minimum overcurrent threshold of 0.9 A and a maximum on-state path resistance of 3.6 Ohm at 150°C. The typical quiescent current is very low at 0.1 µA at 85°C, making it suitable for automotive applications where power consumption is critical. The SPI interface supports a maximum access frequency of 5 MHz, with daisy chain and in-frame response capabilities for efficient control and diagnosis. PWM capable outputs are available for frequencies of 80 Hz, 100 Hz, and 200 Hz, with 8-bit duty cycle resolution.

The TLE94112EL is housed in a PG-SSOP-24 package, which offers good thermal performance and reduces PCB space and costs. Its design incorporates overload and short circuit protection for all outputs, independently diagnosable outputs, and open load diagnostics in the ON-state. Overtemperature pre-warning and protection, along with over- and undervoltage lockout, further enhance its robustness.