Vishay Offers New 100V N-Channel TrenchFET Power MOSFETs Featuring New ThunderFET Technology
Vishay Intertechnology, Inc. released two new 100V n-channel TrenchFET™ power MOSFETs with on-resistance ratings down to 4.5V VGS in SO-8 and PowerPAK® SO-8 packages. Utilizing Vishay’s new ThunderFET® technology, the SiR870DP and Si4190DY are said to offer the lowest values of on-resistance in the industry for 100V MOSFETs with 4.5V ratings. In addition, the product of on-resistance and gate charge – a key figure of merit (FOM) for MOSFETs in dc-dc converter applications – is also best in its class.
The SiR870DP’s low on-resistance of 7.8mΩ at 4.5V is the industry’s lowest. This MOSFET also offers a very low on-resistance of 6mΩ at 10V. For designers, the device’s lower on-resistance translates into lower conduction losses and reduced power consumption for energy-saving green solutions.
With its industry-low 208mΩ-nC FOM at 4.5V, the SiR870DP combines low conduction and switching losses for higher frequency and switching applications. For designers requiring an SO-8 packaged device, the Si4190DY’s on-resistance of 8.8mΩ at 10V and 12 mΩ at 4.5V, in addition to its FOM of 340 mΩ-nC at 10V and 220mΩ-nC at 4.5V, are described as the industry’s best.
The devices are optimized for primary side switching and secondary side synchronous rectification in isolated dc-dc power supply designs for telecom brick and bus converter applications. The MOSFETs’ 4.5V rating for on-resistance allows a wide range of PWM and gate driver ICs to be considered. By utilizing 5V rated ICs, gate driver losses can be reduced and the overall design simplified by eliminating the need for a separate 12V power rail.
The SiR870DP and Si4190DY are 100% Rg and UIS tested. The MOSFETs are halogen-free according to the IEC 61249-2-21 definition and compliant to RoHS Directive 2002/95/EC.
Samples and production quantities of the new MOSFETs are available now, with lead times of 16 weeks for large orders. Pricing for U.S. delivery in 10,000-piece quantities starts at $1.14 per piece.
