Vishay’s 650V E Series MOSFET: Unbeatable RDS(ON)*Qg and RDS(ON)*Co(er) FOMs
Vishay Intertechnology has introduced a new fourth-generation 650 V E Series power MOSFET that delivers high efficiency and power density for telecom, industrial, and computing applications. The company touts that compared to previous-generation devices, the Vishay Siliconix n-channel SiHP054N65E slashes on-resistance by 48.2 % while offering a 59 % lower resistance times gate charge, a key figure of merit (FOM) for 650 V MOSFETs used in power conversion applications.
Vishay offers a broad line of MOSFET technologies that support all stages of the power conversion process, from high-voltage inputs to the low-voltage outputs required to power the latest high-tech equipment. With the SiHP054N65E and other devices in the fourth-generation 650 V E Series family, the company is addressing the need for efficiency and power density improvements in two of the first stages of the power system architecture — power factor correction (PFC) and subsequent DC/DC converter blocks. Typical applications will include servers, edge computing, and data storage; UPS; high-intensity discharge (HID) lamps and fluorescent ballast lighting; solar inverters; welding equipment; induction heating; motor drives; and battery chargers.
Built on Vishay’s latest energy-efficient E Series superjunction technology, the SiHP054N65E’s low typical on-resistance of 0.051 Ω at 10 V results in a higher power rating for applications > 2 kW and allows the device to address the Open Compute Project’s Open Rack V3 (ORV3) standards. In addition, the MOSFET offers ultra-low gate charge down to 72 nC. The resulting FOM of 3.67 Ω*nC is 1.1 % lower than the closest competing MOSFET in the same class, which translates into reduced conduction and switching losses to save energy and increase efficiency. This allows the device to address the specific titanium efficiency requirements in server power supplies or reach 96 % peak efficiency in telecom power supplies.
For improved switching performance in hard-switched topologies such as PFC, half-bridge, and two-switch forward designs, the MOSFET released provides low typical effective output capacitances Co(er) and Co(tr) of 115 pF and 772 pF, respectively. The device’s resulting resistance times Co(er) FOM is an industry-low 5.87 Ω*pF. Offered in the TO-220AB package and providing increased dv/dt ruggedness, the SiHP054N65E is RoHS-compliant, halogen-free, and Vishay Green, and it is designed to withstand overvoltage transients in avalanche mode with guaranteed limits through 100 % UIS testing.
