Fairchild Announces Integrated FET Module To Save Space In Synchronous Buck Converter Designs
Fairchild Semiconductor announced the FDMS9600S and FDMS9620S – two highly integrated modules that are claimed to significantly reduce board space while providing the ability to achieve higher conversion efficiency in synchronous buck designs.
Each module in the FDMS96xx series combines a high-side and low-side N-Channel MOSFET and one monolithically integrated Schottky diode into a single 5mm x 6mm MLP package. This integration is said to result in a highly efficient solution for severely space-constrained applications such as notebook computers, small form factor desktops, media center PCs, ultra-dense servers, blade servers, advanced gaming systems, graphic cards, networking and telecom equipment, and other dc-dc designs. Each FDMS96xx module integrates three separate discrete components into a single MLP package, thereby saving more than 50% board space.
According to the company, the FDMS96xx series also offers a thermally efficient solution due to careful selection of the modules’ internal MOSFETs to thermally balance both the high- and low-side FETs for optimal temperature distribution within the package. By distributing heat uniformly throughout the device, the overall temperature of the package surface is minimized. This, in turn, reduces heat in the actual system, which is claimed to be an important benefit in applications such as notebook computers or ultra-dense servers.
The pin-out of the FDMS96xx series has been designed for a direct and easy connection in PCB layouts to standard PWM controllers. This package concept is said to shorten design time and reduce parasitic inductances in board layout traces, improving overall system efficiency.
The FDMS96xx series utilizes lead-free (Pb-free) terminals and has been characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020. All of Fairchild’s products are designed to meet the requirements of the European Union’s Directive on the restriction of the use of certain substances (RoHS).
The units are priced (each, 1,000 pieces) at USD $0.90 for the FDMS9600S and $0.50 for the FDMS9620S, with an ARO of 6 to 8 weeks.
