Toshiba Electronics Europe has launched TB9057FG, a brushed motor pre-driver IC that provides enhanced functional safety and control for automotive applications such as electric power steering systems (EPS). The new IC meets the requirements set in Automotive Safety Integrity Level D (ASIL-D).
Increasing numbers of safety-critical automotive systems are required to meet the requirements of ASIL-D standards.
The new IC integrates a pre-driver circuit, dual motor current detection circuit that converts motor current to voltage and output to MCU, It also integrates motor direction detection circuitry that detects whether external MOSFETs turn on or off normally and output the direction information to MCU.
To accommodate the possibility of a voltage drop caused by cranking after idling reduction, the battery operation voltage range has been reduced to 5V (min.)
