The company says its new advanced MOSFETs are optimized to provide high efficiency and high power-density solutions, while reducing heat dissipation and using less space.
The SRFET device’s Schottky body diode features a low forward voltage drop of 0.4 V that reduces power losses and a soft-recovery characteristic that reduces ringing and associated EMI. In addition, designers can achieve higher current and power density as a result of the package’s exposed copper-lead frame, which permits efficient heat transfer into the printed circuit board. And while the package is said to use only one-third the board area of an SO-8 device, it maintains the same 60°C/W thermal performance.
Because of its small form factor, the new AON740x product family is ideal for space-constrained applications requiring high-efficiency dc-dc conversion, such as notebook and desktop PCs, set-top boxes, and high-end appliances such as washing machines and refrigerators that have more-advanced displays. “These MOSFETs are truly general-purpose, high-performance transistors,” Grey tells APPLIANCE. “They are typically used in dc-dc convertor circuits to generate voltages required by the controlling electronics. Therefore, any motherboard in a desktop or notebook computer or any control board in a set-top box or high-end home appliance is likely to need some form of electronic power management.”
Grey also says that implementing the devices into existing product designs is fairly straightforward. “This 3 × 3 package is already used in the industry, so in some cases, we can second-source an existing device and provide an improvement in performance or cost-effectiveness,” he says. “Failing that, a PCB layout change would be required to convert from the popular SO-8 or another package.”