Hybrid emitter-switched transistor reduces power dissipation
31 May 2006
Power Electronics / Power Management
STMicroelectronics hybrid emitter-switched bipolar transistor (ESBT) is designed for use in welding equipment, induction heating systems and power factor correction for audio amplifiers. The STE50DE100 sustains a high collector-source voltage of 1000 V and collector currents of up to 50 A. The four-terminal device is supplied in an industrial screw-mounted Isotop package.
ST has designed this part to combine the strengths and eliminate the drawbacks of both bipolar and mosfet technologies.
Power bipolar technology to date has typically been used in power switching applications at frequencies well below 70 kHz. Its low collector-emitter saturation voltage brings the benefit of low conduction losses. Drawbacks however, include slow switching speeds, the need for high currents from driving circuitry and problems related to fine-tuning this circuitry.
In contrast, mosfet technology is widely used in high-frequency power switching applications. Mosfets' main benefits are high switching speed capability and the need for very low current from its driving circuitry. Drawbacks include higher cost compared to bipolar, and high power consumption during conduction.
By combining the benefits and removing the drawbacks of both technologies, ST says that the STE50DE100 helps reduce the conduction losses to the same level as those of a bipolar part, while offering good performance in high-speed switching at up to 150 kHz as for mosfets.
In addition, thanks to its cascode configuration and dedicated bipolar technology, the device offers a square reverse bias safe operating area, enabling it to work in hard switching topologies.v The rugged isotop allows a very high total power dissipation of 160 W at 25°C. Maximum operating junction temperature is 150°C and the insulation withstand voltage is 2500 V a.c. rms.
Further reading:
Wine farm turns to solar installation for power
Current Automation
Power Electronics / Power Management
Slanghoek Wine farm opted into a power purchase agreement to lower overall electricity costs and enter a true sustainable future, with a price-competitive edge on lower running costs.
Read more...
Industrial PSU family
Brabek
Power Electronics / Power Management
The RACPRO1 family of PSUs supports a universal DC input voltage range from 430 to 850 V DC, allowing the parts to support renewable energy and microgrid applications.
Read more...
Integrated POL voltage regulators
EBV Electrolink
Power Electronics / Power Management
Infineon’s TDA38807 and TDA38806 are their highest density high-efficiency integrated point-of-load (IPOL) solutions for smart enterprise systems.
Read more...
Hi-Rel quarter-brick converters
Accutronics
Power Electronics / Power Management
Gaia Converter’s quarter-brick series DC-DC power modules provides output power levels ranging from 75 to 250 W in fixed output voltages.
Read more...
1700 V GaN Switcher IC
Future Electronics
Power Electronics / Power Management
Power Integrations has introduced a new member of its InnoMux-2 family of single-stage regulated multi-output offline power supply ICs, the industry’s first 1700 V gallium nitride switch.
Read more...
How ADI battery management solutions empower safer, smarter robots
Altron Arrow
Editor's Choice Power Electronics / Power Management
Choosing an appropriate battery pack and its accompanying battery management system is a critical decision in designing an autonomous mobile robot.
Read more...
Industrial power supply range
RFiber Solutions
Power Electronics / Power Management
SynQor’s ruggedised AC-DC and DC-DC converters and filters are designed for a wide range of industrial applications, including those required to withstand harsh environments.
Read more...
PSUs for industrial applications
Power Electronics / Power Management
RECOM’s REDIIN120/240/480 series of AC-DC converters perfectly corresponds with customer needs by exhibiting high efficiency and low energy consumption at no load.
Read more...
Highest density automotive-grade power modules
Altron Arrow
Power Electronics / Power Management
Vicor has released three automotive-grade power modules for 48 V EV systems, which deliver industry-leading power density.
Read more...
MOSFET for automotive applications
Altron Arrow
Power Electronics / Power Management
Infineon’s OptiMOS 7 100 V is offered in the company’s versatile and robust, high-current SSO8 5 x 6 mm
2 SMD package.
Read more...
printer friendly version