Gate Driver is suited for IGBT and power MOSFETs.

Press Release Summary:

Available in SO-14 package, TD350 gate driver includes control and protection functions on one chip. It can source or sink 1.5 A and has separate sink and source outputs to enable independent control of gate charging and discharging. Device monitors desaturation voltage to protect IGBT in case of excess current, triggering fault signal if necessary. It offers option to turn IGBT off in 2 stages via programmable intermediate voltage.

Original Press Release:

IGBT Driver from STMicroelectronics Boosts System Reliability

Device integrates monitoring and fault protection functions

Geneva, April 23, 2004 - STMicroelectronics (NYSE: STM) has introduced an advanced gate driver for IGBT and power MOSFETs. The part includes control and protection functions that ease the design of high-reliability systems such as 1200V three-phase inverters, motor control and un-interruptible power supplies.

The TD350 offers a simpler way to design reliable systems by putting all the control and protection functions on one chip.

It can source or sink 1.5A and has separate sink and source outputs to enable designers to control gate charging and discharging independently, without needing an external diode.

The input is designed to work with low-cost pulse transformers and optocouplers, saving cost in the final design. It has a Miller clamp to enable designers to control the Miller current in the driven device, helping avoid the need for a negative supply voltage.

The part has a number of functions that help protect itself and the driven device, helping to improve the reliability of the systems it is designed into.

The TD350 monitors the desaturation voltage to protect the IGBT in the event of an excess current, triggering a fault signal if necessary. It offers an option to turn the IGBT off in two stages, via a programmable intermediate voltage, to improve reliability.

The driver includes an under-voltage detection function, to protect the application in the event of a low supply voltage. A fault status output signals a fault, such as desaturation or under-voltage, to a controller using a fault pin that is designed to drive an optocoupler.

The part is protected against 2KV static discharge and is available in a ?SO-14 package. It is available now in 1K quantities at $1.10.

For further information please visit The datasheet can be found at the following URL:

About STMicroelectronics

STMicroelectronics is a global leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The Company's shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2003, the Company's net revenues were $7.24 billion and net earnings were $253 million. Further information on ST can be found at

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