Fairchild Semiconductor's Generation II XS DrMOS Devices Offer 94% Efficiency in 6mm x 6mm Form Factor

Fairchild FDMF6705 FDMF6705V FDMF6706C FDMF6707B

Highefficiency, high current handling capability and small form factors are critical to power supply designers when selecting components for voltage regulator solutions. To meet this need, Fairchild Semiconductor developed its family of Generation II XS DrMOS [Integrated Driver + MOSFET] devices offering high efficiency and power density to enable designers to meet specific design needs for various applications.

Fairchild - FDMF6705, FDMF6705V, FDMF6706C, FDMF6707B

Generation II XS DrMOS devices, available in a small, 6mm x 6mm high performance clip PQFN package, feature higher system efficiency with over 91.5 percent heavy load efficiency at 12Vin, 1Vout, and 25A, and 94 percent peak efficiency. Generation II XS DrMOS can be operated at a 2MHz switching frequency and have up to 50A of current handling capability.

Leveraging the company’s expertise in MOSFETs, gate driver ICs, and packaging technology, Fairchild optimized Generation II XS DrMOS devices for greater efficiency and developed new features. These enhancements make the Generation II XS DrMOS family ideal for applications such as blade servers, high performance gaming motherboards, high performance notebooks, graphic cards, and high current DC-DC point-of-load (POL) converters.

Devices in the portfolio offer a 5V and 3.3V Tristate level to match the Intel® 4.0 DrMOS specification and are compatible with a variety of PWM controllers on the market. The Generation II XS DrMOS portfolio significantly reduces ringing due to PowerTrench® MOSFET Shielded Gate technology in both the control FET and synchronous FET. The synchronous FET also integrates a Schottky diode which eliminates external snubber circuits, improving overall performance and power density while reducing space and cost. Generation II XS DrMOS devices also include a thermal warning feature for customers to prevent over temperature conditions during fault situations.

The Generation II XS DrMOS portfolio is able to meet different customer and application needs.

Device
Family
Part
Number
Amps
Efficiency
at 12Vin,
1Vout, 25A
Internal
Regulator
PWM
Input
Thermal
Protection
Gate
Drive
Voltage
Applications
05 Family
40A
>89%
No
5V
Tri-state
Warning
5V
Gaming, Desktops,
and Notebooks
40A
>89%
Yes
5V
Tri-state
Warning
5V
Gaming and Desktops
06 Family
45A
>91%
No
5V
Tri-state
Warning
5V
Servers and Telecom
07 Family
50A
>91.5%
No
3.3V
Tri-state
Warning
5V
Servers and Telecom

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