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Toshiba starts mass production of system regulator IC with monitoring function for electric and hybrid vehicles

Toshiba Corporation’s Semiconductor & Storage Products Company has begun the start of mass production of a system regulator IC with monitoring function for the motor control system of electric and hybrid vehicles. The new IC (TB9042FTG) is optimized for high efficiency systems, with a strengthened monitoring function to reduce potential risks that threaten the security of the system.

Failure of the system regulator IC leads to malfunction of electronic devices. The system particularly loses functionality when microcontroller (MCU) failure impacts on operation.

TB9042FTG provides a Serial Peripheral Interface (SPI) communication function to avoid this dangerous condition. The system regulator IC and the MCU identify trouble at the time of the abnormality by using the SPI communication function to monitor each other. Using the derived information, the system can carry out safe and timely processing.

(SPI is a serial bus used for communications between the devices. The signal line comprises four lines, and it can communicate using fewer terminals than a parallel bus.)

Key features of the IC include:

  • Two DC-DC converters and three series regulators built-in

  • Continuous monitoring of the system regulators (High output voltage, Low output voltage, Overcurrent, Overheat, Unusual frequency)

  • Continuous monitoring of the MCU (Watchdog Timer, MCU alarm, MCU calculation function, Communication error)

  • Self-diagnosis function (High output voltage, Low output voltage, Output logic of each detection circuit)

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