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

2015-10-15 | Return

Strengthened monitoring function contributes to safer vehicle systems

product photo: TOKYO– Toshiba Corporation&lqquot&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&lqquot&s System Power Supply ICs, please visit:: http://toshiba.semicon-storage.com/ap-en/product/automotive/powersupply.html

Source:http://www.semicon.toshiba.co.jp/eng/