New ThunderFET Power MOSFET is Industrys First 80-V MOSFET With On-Resistance Specified at 4.5-V Gate Drive, with Value of 8.5 mOhm

Vishay Intertechnology, Inc. announces the first TrenchFET® power MOSFET built on a new low-onresistance technology optimized for higher-voltage devices. The new ThunderFET™ SiR880DP is the first 80-V power MOSFET with an on-resistance rating at a 4.5-V gate drive. Packaged in the PowerPAK® SO-8, the new 80-V SiR880DP offers ultra-low on-resistances of 8.5 mΩ at 4.5 V, 6.7 mΩ at 7.5 V, and 5.9 mΩ at 10 V. Typical on-resistance times gate charge, a key figure of merit (FOM, expressed in nC-mΩ) for MOSFETs in dc-todc converter applications, is 161 at 4.5 V, 201 at 7.5 V, and 240 at 10 V.

Product Benefits:

• Utilizes new low on-resistance ThunderFET™ technology
• Industry-low 8.5-mΩ on-resistance at 4.5 V
• Reduces power consumption
• 4.5-V rating lowers gate drive losses
• Allows lower-voltage/lower-cost 5-V PWM ICs to be utilized
• Low on-resistance times gate charge down to 161 nC-mΩ at 4.5 V
• 100 % Rg and UIS tested
• Halogen free according to the IEC 61249-2-21 definition
• Compliant to RoHS Directive 2002/95/EC

Market Applications:

• Primary side switching in isolated do-to-dc converters for telecom point-of-load applications

The Key Specifications:

• 80-VDS
• 20-VGS
• PowerPAK® SO-8 package
• On-resistance:
• 5.9 mΩ at 10 V
• 6.7 mΩ at 7.5 V
• 8.5 mΩ at 4.5 V
• Typical on-resistance times gate charge FOM:
• 240 nC-mΩ at 10 V
• 201 nC-mΩ at 7.5 V
• 161 nC-mΩ at 4.5 V

The Perspective:

The SiR880DP is optimized for primary side switching in isolated do-to-dc converters for telecom point-ofload applications. Its very low on-resistance translates into reduced power consumption and greener solutions, especially at light loads such as stand-by mode. The device’s 4.5-V rating is conducive tohigher-frequency designs, enabling significantly lower gate drive losses in POL applications while allowing lower-voltage/lower-cost 5-V PWM ICs to be utilized. Until now, 80-V power MOSFETs were only available with on-resistance ratings at a 6-V gate drive or higher.

Availability:

Samples and production quantities of the SiR880DP are available now, with lead times of 16 weeks for large orders.