MOSFETs target cloud & IoT applications

Megatrends such as cloud computing, IoT and social media drive an ever increasing demand for computing power in modern society. This is accompanied by a boost in energy consumption which, in return, triggers the need for energy efficiency within the power conversion chain. The OptiMOS 25V and 30V MOSFETs offer benchmark solutions with efficiency improvements of around 1% across the whole load range compared to its previous generation, exceeding 95% peak efficiency in a typical server voltage regulator design. This improved performance is based for example on the reduction of switching losses (Q switch) by 50% compared to the previous OptiMOS technology. Thus, implementing the new OptiMOS 25V would lead to energy savings of 26.3kWh per year for a single 130W server CPU working 365 days. Adding 50.000 servers working in a server farm on average this would amount to savings of 1.3GWh per year.

The launch of the OptiMOS 25V and 30V product family is accompanied by the introduction of a new packaging technology offering a further reduction in PCB area consumption. It is used in the Power Block product family and in the integrated powerstage DrMOS 5x5 and offers a source down low-side MOSFET for improved thermal performance, with a reduction by 50% of the thermal resistance in comparison to standard package solution, such as SuperSO8.

Infineon`s Power Block is a leadless SMD package comprising the low-side and high-side MOSFET of a synchronous DC/DC converter into a 5.0x6.0mm² package outline. With Power Block, customers can shrink their designs up to 85% by replacing two separate discrete packages, such as SuperSO8 or SO-8. Both, the small package outline and the interconnection of the two MOSFETs within the package minimise the loop inductance for best system performance.

OptiMOS 5 25V is also used in an integrated power stage, combining DrMOS 5x5, driver and two MOSFETs, for a total area consumption on the PCB equal to 25mm². The integrated driver plus MOSFETs solution results in a shorter design time and is easy to design-in. Additionally, the dovetailed power stage includes a high accurate temperature sense of +/-5°C (compared to +/-10°C of an external one) which enables higher system reliability and performance.

“With the significant reduction in switching losses, the OptiMOS 5 products allow engineers to operate their designs at higher switching frequencies, reduce energy consumption and save overall system costs. Together with our digital IC and driver family we offer a broad range of complete solutions for DC/DC voltage regulation applications, where DrMOS 5x5 and Power Block products are the designers` choice for highest efficiency in industry standard footprints,” commented Richard Kuncic, Vice President and General Manager, Power Management & Multimarket, Infineon Technologies.

Infineon will showcase the OptiMOS 5 25V and 30V product family as well as the Power Block and DrMOS 5x5 packages at APEC, which takes place from 15^th to 19^th March, in Charlotte, North Carolina. The company will be located at booth 509 and 705.

Samples of the OptiMOS 25V and 30V devices in SuperSO8, S3O8 and Power Block packages, with on-state resistances from 0.9mΩ to 3.3mΩ are available. Additional products with monolithic integrated Schottky-like diode and products in 30V will be available from Q2 2015 onwards. DrMOS 5x5 will be released in Q2 2015.