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Product Name: 200-V MOSFET has 95 percent efficiency
Product Description
El Segundo, Calif.—International Rectifier's IRF6641TRPBF power MOSFET, a 200-volt HEXFET using DirectFET package technology, touts an efficiency of up to 95 percent.
"Our new 200-volt DirectFET MOSFET achieves a current rating up to 25 amperes in a footprint the size of an SO-8 with only a 0.7 mm profile, while minimizing gate charge and package inductance to reduce both conduction and switching losses," said Carl Blake, director of Technical Marketing for Discrete Products. "The board space savings alone of one DirectFET MOSFET versus two or three SO-8 devices is more than 50 percent," adds Blake.
The device, designed for use in isolated DC/DC converter designs operating from a universal input range (36 to 75 volts), has a typical on-resistance of 51 milliohms at VDS = 10 and reduced gate charge (QG =35 nC typical, QGD = 9.5 nC typical) for synchronous rectifier applications in high-frequency, high-current converters for intermediate bus converters, DC motor drives, and 48-volt inverters used with wind turbines. It is also suitable for synchronous rectification in high current AC/DC converters for powering computers and telecom servers operating from a 48-volt input.
IR says that compared to the in-circuit efficiency of the IRF6641TRPBF to other enhanced SO-8 devices in secondary-side synchronous rectification sockets, its new DirectFET device delivers an improvement of efficiency of 0.4 percent. Additionally, the device provides the same seven-amp, full-load efficiency when the same numbers of enhanced SO-8 devices are doubled-up at each socket. In this example, the MOSFET temperatures are lowest in the circuit using two IRF6641TRPBFs.
The device has a common MZ footprint allowing an easy migration path to other mid-voltage DirectFET MOSFETs such as the company's lower-voltage, 100-volt IRF6662 device in applications where the current levels increase and lower voltage is acceptable.
Company Details
The Power Management DesignLine site is managed by Editor Paul O'Shea.
Starting out his career in the "Live Music Capital" city of Austin, Texas more than 20 years ago, Paul began with testing the Texas Instruments Business Systems, and moved on... more
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