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September 2023


ROHM: New 600V Super Junction MOSFETs


SANTA CLARA, CA — ROHM Semiconductor today announced the addition of three new models, the R60xxRNx series, to its PrestoMOS™ lineup of 600V super junction MOSFETs. These devices are optimized for driving small motors in refrigerators, ventilation fans, and other appli- cations where noise suppression is important. In recent years, greater


energy efficiency in equipment has become increasingly impor- tant in response to the tighten- ing of the global power supply, with motor drives accounting for up to 50% of the world’s total power demand. For this reason, high efficiency MOSFETs are being used more often in inverter circuits that convert power to drive motors. At the same time, however,


countermeasures against noise generated from MOSFET opera- tion typically involve adding components and/or changing cir- cuit patterns, so there is a need to reduce both man-hours and costs. But reducing power loss and noise are generally in a trade-off relationship, making it difficult to achieve both. The new R60xxRNx series


maintains the high-speed trr characteristics of PrestoMOS while minimizing noise. An


industry-best trr of 40ns is achieved by improving conven- tional lifetime control technolo- gy, reducing switching losses by approximately 30% over general


R60xxRNx series super junction MOSFETs.


products, which translates to lower application power loss. At the same time, the newly


developed Super Junction struc- ture reduces noise characteristics (which are inversely related to faster trr) by about 15 dB com- pared to standard products (under ROHM measurement conditions at 40 MHz). Delivering industry- leading characteristics reduces the number of man-hours and parts required for noise counter- measures.


Contact: ROHM Semicon - ductor USA, 2323 Owen Street,


Santa Clara, CA 95054 % 408-720-1900 E-mail: jpon- tious@rohmsemiconductor.com Web: www.rohmsemiconductor.com


Solenoid Driver Module from Magnetic Sensor Systems


VAN NUYS, CA — Magnetic Sensor Systems (MSS) Has released the SDM840 solenoid driver module as a complement to their series of solenoids and those of other manufacturers that includes: tubular, open frame, low profile, hinged clap- per, latching, and rotary sole- noids.


MEDICAL POWER SUPPLIES


    


  


978-453-7272 www.total-power.com This compact, quiet 20 kHz


pulse width modulated driver module measuring just 1.65 x 2.5 in. (41.9 x 64 mm) is designed to consume less energy by first applying the voltage for a prede- termined period of time neces- sary to activate the solenoid and when the plunger is seated, drop the voltage to a level sufficient to hold the solenoid in the seated position conserving energy and avoiding overheating the sole- noid’s coil. This also allows smaller


solenoids to be used when a large force at a long stroke is required by applying high voltage to the solenoid providing the necessary force to pull the plunger in, then dropping the voltage down to maintain the plunger in place. Designed to operate with a supply voltage of 8 to 40 VDC at


a peak current of 20A, the SDM840 solenoid driver module has a command or trigger volt- age of 2 to 40 VDC. Having a


SDM840 solenoid driver module.


trigger is especially useful when using solenoids requiring higher voltages and the command volt- age is lower such as a TTL sig- nal. The readily available options for pick time is 100, 250 and 1,000 mSec, while different values for pick time can also be provided.


Contact: Magnetic Sensor Systems, 6901 Woodley Avenue,


Van Nuys, CA 91406 % 888-785-9444 E-mail: info@magneticsensorsystems.co m Web: www.magneticsensorsystems.com


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