Date: 07/04/2010

Set of power MOSFETs for DC-DC conversion in computer systems

International Rectifier has made available a set of 25V power MOSFETs for high frequency DC-DC switching applications. The IRF6706S2PbF and IRF6798MPbF MOSFET set is suggested for 12V input synchronous buck applications including servers, desktops, and notebooks.

"IR continues to enhance the performance of power MOSFETs by improving critical parameters. The new IRF6706S2PbF and IRF6798MPbF DirectFET chipset combines low charge and low RDS(on) with the industry's lowest gate resistance to minimize conduction and switching losses traditionally associated with the sync and control socket of a typical synchronous buck converter," said Omar Hassen, executive director, Low Voltage DirectFET Products, Enterprise Power Business Unit.

The IRF6798MPbF is 37 Amps rated MOSFET device providing on-state resistance (RDS(on)) of less than 1mOhm. IRF6798MPbF has monolithically integrated Schottky diode that reduces losses associated with body diode conduction and reverse recovery losses. The IRF6798MPbF features low gate resistance (Rg) of 0.25Ohm to eliminate Cdv/dt related shoot through.

The IRF6706S2PbF is a 17 Amps rated MOSFET with on resistance of 3.2 mOhms.



Brief Specifications Table:
Part Number BVDSS
(V) RDS(on)
typ @10V
(mOhms) RDS(on)
typ @4.5V
(mOhms) VGS
(V) ID @ TA=25ºC
(A) QG typ
(nC) QGD typ
(nC) Outline Code
IRF6798MPBF 25 0.95 1.6 +/-20 37 50 16 MX
IRF6706S2PBF 25 3.2 5.3 +/-20 17 12 4.2 S1


Availability: Now in volumes
Price:
IRF6706S2PbF: Each US $0.60 for 10K pieces
IRF6798MTRPbF: Each US $1.50 for 10K pieces