STMicroelectronics has introduced first MDmesh V Super-Junction MOSFET, featuring a new package technology that increases efficiency of power circuitry in equipment such as white goods, televisions, PCs, telecom, and server switched-mode power supplies.
The new TO247-4 4-lead package provides a direct source connection used only for switching control, whereas conventional packages provide one connection for both switching and power. The extra lead increases switching efficiency, which reduces energy losses and allows higher-frequency operation for more compact power supplies.
“The TO247-4 is highly cost-effective and requires only minimal modification of the PCB layout when replacing a standard TO-247 device, which simplifies adoption in power systems. Our new MDmesh devices using this package will enable better environmental performance of end equipment by improving energy efficiency in active modes,” commented Maurizio Giudice, Marketing Director, Power Transistor Division, STMicroelectronics.
The TO247-4 package features an internal construction implementing a Kelvin connection to the source. This connection bypasses the common source inductance of the main power connection, enabling up to 60% of switching losses to be eliminated and allowing designers to use higher switching frequencies that require smaller filtering components.
Some other features of STW57N65M5-4 in TO247-4 include high-noise immunity, lowering susceptibility to Electro-Magnetic Interference (EMI), increased voltage rating for greater safety margins and high dv/dt capability for enhanced reliability.
