Renesas to release integrated driver-MOSFET for notebook PC CPU power supplies

SAN JOSE, USA: Renesas Technology America Inc., today announced the R2J20653ANP, an integrated driver-MOSFET for use in voltage regulators (VR) for the CPU, memory, etc., of notebook PCs.

It complies with the integrated Driver-MOSFET (DrMOS) specification and combines a high-voltage tolerance supporting input voltages up to 27 V and the industry’s top power supply efficiency of 91% (when operating with an input voltage of 20 V and an output voltage of 1.1 V). Mass production will begin on December 7, 2009.

Integrated Driver-MOSFET (DrMOS) is a standard for packaged semiconductor devices proposed by Intel. A DrMOS integrates in a single package the two types of power MOSFET required by the power supply of a CPU, etc., and a (single) driver IC to drive them.

The R2J20653ANP is a highly integrated device conforming to the standard. It can be used, for example, to convert a 20 V input voltage to a 1.1 V CPU power supply voltage.

The R2J20653ANP integrates in a single 40-pin QFN package two power MOSFETs (a high-side MOSFET and a low-side MOSFET) and a power IC. Integration in a single package means the parasitic inductance of interconnects between the devices is extremely small, which is ideal for high-frequency operation.

The power MOSFETs used are Renesas's latest design, and deliver the top performance in the industry. The low-side MOSFET incorporates a Schottky barrier diode to reduce switching loss. The driver IC is also optimized for on-off control of the MOSFETs used.

The lead-less, high-heat-dissipation package conforms to the DrMOS standard and has a compact mounting area. A wireless configuration with a copper plate is used for internal connections, substantially reducing resistance inside the package. Pins that occupy more than half the area of the back of the package are used for large current paths to prevent problems related to current and heat.

Finally, the industry’s highest level of efficiency and suitability for high-frequency operation makes it possible to reduce the size and number of external passive components, thereby decreasing the overall size of the power supply.

Renesas Technology plans to add new products with enhanced functionality and reduced loss to its lineup of DrMOS-compliant devices for notebook PCs in order to meet the evolving requirements of customers and expand sales of its products.