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Toshiba Starts Mass Production of System Regulator IC with Monitoring Function for Electric and Hybrid Vehicles

 - Strengthened monitoring function contributes to safer vehicle systems -

TOKYO - Friday, October 16th 2015 [ME NewsWire]

(BUSINESS WIRE)--Toshiba Corporation's (TOKYO:6502) Semiconductor & Storage Products Company today announced the mass production start of "TB9042FTG", a system regulator IC with monitoring function for the motor control system of electric and hybrid vehicles. The new IC 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 an 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.

Key Features

    Two DCDC converters and three series regulators are built in
    Various monitoring functions
        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)
    SPI communication[1] reports the monitoring state to external system
    When an unusual condition occurs, the output terminal immediately reports the monitored state to the external system. (Reset timer (RSTA/B), unusual voltage detection (NOVDET), MCU alarm (NOALM), All diagnosis result report (NDIAG)


Main Specifications
Part Number           TB9042FTG
Supply Voltage           

Supply voltage range: 7 to 20.1V Absolute maximum input voltage: 40V (1S)
DC-DC Converter

(Output Voltage/Current)

DCDC1 (Step down): 6V / 1A DCDC2 (Step up): 1.5V or 1.2V / 1A
Series Regulator

(Output Voltage/Current)

LDO1: 5V / 400mA LDO2: 5V / 100mA VBU: 5V or 3.3V / 10mA
Monitoring Function           - Continuous monitoring of the system regulator - Continuous monitoring of the MCU diagnosis - Self-diagnosis
SPI Communication           - Notifications when the failure is detected in the system regulator - Data judgment function for MCU diagnosis
Package           HQFN52 (8mm×8mm×0.9mm)

[1]: SPI (Serial Peripheral Interface) 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.

For further information about Toshiba's System Power Supply ICs, please visit:

Customer Inquiries Automotive Sales and Marketing Department Tel: +81-3-3457-3428

* Information in this document, including product prices and specifications, content of services and contact information, is current on the date of the announcement but is subject to change without prior notice.

About Toshiba

Toshiba Corporation, a Fortune Global 500 company, channels world-class capabilities in advanced electronic and electrical product and systems into five strategic business domains: Energy & Infrastructure, Community Solutions, Healthcare Systems & Services, Electronic Devices & Components, and Lifestyles Products & Services. Guided by the principles of The Basic Commitment of the Toshiba Group, “Committed to People, Committed to the Future”, Toshiba promotes global operations and is contributing to the realization of a world where generations to come can live better lives.

Founded in Tokyo in 1875, today’s Toshiba is at the heart of a global network of over 580 consolidated companies employing 199,000 people worldwide, with annual sales surpassing 6.6 trillion yen (US$55 billion). To find out more about Toshiba, visit


Media Inquiries:

Toshiba Corporation

Semiconductor & Storage Products Company

Chiaki Nagasawa, +81-3-3457-4963






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