International Rectifier introduces the IRF1312 HEXFET® power MOSFET, rated at 80V, which can be used as both a primary- and a secondary-side MOSFET in an isolated DC-DC converter for netcom and datacom systems.
As a primary-side MOSFET, the IRF1312 can be used for a maximum input voltage of 60V, and therefore is best in either a half- or full-bridge configuration for 36V to 60V and 48V regulated input bus isolated DC-DC converter applications. The 80V rating offers an additional 6% guard-band over competing 75V MOSFETs for more rugged designs.
"Many designs for primary side applications require a 75% device de-rating. Existing 75V rated MOSFETs under this requirement can only support systems with up to 56V input. The new IRF1312 80V MOSFETs achieve this de-rating requirement for up to 60V applications. Therefore, the IRF1312 ensures high reliability in 36V to 60V bus applications as required in telecom and datacom systems," said Carl Smith, Marketing Manager for Networking and Telecommunication Products at International Rectifier.
When used as a secondary-side MOSFET, the IRF1312 offers a 0.4% improvement in efficiency compared to standard 75V MOSFETs when used in 12V applications. The new MOSFET can be used in secondary side circuits with 15V maximum output.
The new MOSFET features low gate charge to reduce switching losses and low on-state resistance to minimize conduction losses. The IRF1312 is available in TO-220AB, D2Pak and TO-262 packages.
| Part Number | Package | VDSS(V) | RDSon max @ 10Vgs(mW) |
Qg typ(nC) | Qgd typ(nC) |
| IRF1312 | TO-220AB | 80 | 10 | 93 | 34 |
| IRF1312S | D2Pak | 80 | 10 | 93 | 34 |
| IRF1312L | TO-262 | 80 | 10 | 93 | 34 |
Availability and Pricing
The new The IRF1312, IRF1312S and IRF1312L are available immediately. Pricing is US $1.06 each in 10,000-unit quantities.
