Infineon TLE8102SGAUMA1: A High-Current Half-Bridge Driver for Automotive Motor Control Applications
In the rapidly evolving landscape of automotive electronics, efficient and reliable motor control is paramount for a wide range of applications, from engine cooling fans and water pumps to power windows and throttle control. Addressing the stringent requirements of these systems, Infineon Technologies has developed the TLE8102SGAUMA1, a sophisticated high-current half-bridge driver designed specifically for the demanding automotive environment.
This integrated circuit (IC) stands out as a robust solution for driving inductive loads, primarily DC motors. Its core function is to efficiently control the power stage of a half-bridge configuration, which is the fundamental building block for more complex H-bridge circuits used for bidirectional motor control. The TLE8102SGAUMA1 integrates two low-RDS(on) N-channel MOSFETs, capable of handling continuous output currents up to 5.5 A and peak currents even higher. This high-current capability allows it to directly drive small motors or serve as a pre-driver for larger external power MOSFETs in higher-power applications.
A key strength of this driver is its comprehensive suite of protective features, which are critical for ensuring longevity and functional safety in vehicles. These include:
Overcurrent Protection (OCS): Safely limits the output current to prevent damage to the IC and the motor during stall conditions or short circuits.
Overtemperature Shutdown (TSD): Monitors the junction temperature and disables the outputs if a critical threshold is exceeded, automatically restarting once the chip has cooled down.
Undervoltage Lockout (UVLO): Ensures the logic and power stages operate correctly by disabling the outputs when the supply voltage is too low, preventing malfunction.
Overvoltage Protection (OVP): Guards against voltage transients common in the harsh automotive electrical system.
The device is controlled via a standard Serial Peripheral Interface (SPI), allowing a microcontroller to configure parameters, set the output states, and read back detailed diagnostic information. This diagnostic capability covers status flags for overtemperature, overcurrent, and open-load conditions, enabling proactive system monitoring and maintenance. Furthermore, its AEC-Q100 qualified status guarantees its reliability and performance under the extreme temperatures and environmental stresses encountered in automotive applications.
Packaged in a space-saving PG-DSO-14-47 housing, the TLE8102SGAUMA1 offers a compact yet powerful solution that simplifies design-in and reduces the overall bill of materials for automotive engineers.
The Infineon TLE8102SGAUMA1 is a highly integrated, robust, and intelligent half-bridge driver. It excels in automotive motor control by delivering high output current, offering extensive diagnostic feedback via SPI, and incorporating vital protective features, making it an ideal choice for enhancing reliability and performance in next-generation vehicle systems.
Keywords:
Half-Bridge Driver
Automotive Motor Control
High-Current
SPI Interface
AEC-Q100
