Latest Electronic Power Supplies News

Sensor-less brushless DC motor controller

Sensor-less brushless dc motors do not have to be hard to drive, claims Allegro MicroSystems. “Start-up and run commutation can be customised for individual motors and loads by adjusting a few default parameters,” said the firm. “It can be used as a stand-alone controller communicating directly with…

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Tiny package 3A regulator designed for PCIe cards

Linear Technology has squeezed a 3A voltage regulator into a package measuring just 6.25mm square. The LTM4623 3A µModule step-down regulator also has a 1.8mm height profile which is designed to meet the requirements of PCIe (Peripheral Component Interconnect Express), Advanced Mezzanine Cards (AMC) for AdvancedTCA carrier…

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Power converter for high and low side IGBT drivers

Murata has introduced the MGJ3 and MGJ6 series of configurable output voltage, high isolation DC/DC converters for use as high-side and low-side gate drivers in IGBT and MOSFET bridge circuit designs. These are 3W and 6W surface mounted devices which provide triple output voltages of + 15, + 5…

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Power supply OR'ing controller rated for 40V

Diodes has introduced a 40V-rated active OR’ing controller for the design of uninterruptible power supplies. The ZXGD3108N8 is designed to drive low RDS(ON) power mosfets replacing lossy Schottky blocking diodes. According to the supplier, by driving s in this way the controller also improves the overall system…

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Improved thermals on 1.2kV 3 phase IGBT motor driver

Fairchild has cut thermal resistance in three phase drivers for motors up to 1.2kV 7.5kW using a direct bonding copper (DBC) substrate transfer moulded into its packaging. Junction to case thermal resistance is 1.33C/W for each IGBT inside and 2.3C/W for each free-wheeling…

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34 amp GaN transistor promoted for Google challenge

Ontario-based GaN Systems is proposing a 34A capacity GaN transistor for the switching element in the IEEE/Google Little Box Challenge – a challenge to make mains power supplies at over 50W/inch3. ”We are making our GS66508P product available to all Little Box contestants. This 34A, 41mΩ GaN switch…

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