LEOMINSTER, MA, August 2000 - Omnirel, an International Rectifier company (NYSE: IRF), introduces four high-efficiency, low-voltage switching regulators in plastic packages that economically increase power density in select commercial, industrial and military applications.

The new OM9551SP, OM9552SP, OM9553SP and OM9554SP switching regulators are 5V input, 3A output units for 3.3, 2.5, 1.8 and 1.5V output applications respectively. The packaging ensures reliable operation in non-radiation environments, while providing a cost-effective solution. switching regulators are 5V input, 3A output units for 3.3, 2.5, 1.8 and 1.5V output applications respectively. The units are similar to standard three-pin, non-isolated switching regulators.

Omnirel’s chip-on-board assembly technology allows the new regulators to be squeezed into a 0.75 x 0.80 x 0.50-inch footprint, yet provide 80W/in3 power density. Each OM955 Series module incorporates an International Rectifier IRF7314 HEXFET® MOSFET and a 15WQ040 Schottky diode. A 22mF input capacitor and 330mF output capacitor are built into the regulator module. Competing units are larger and require external capacitors. The units operate over a -25º to +85ºC temperature range and feature a typical efficiency of 87 percent.

Switching regulators are used in commercial, scientific and military satellite power systems where point-of-load regulation is required, such as digital signal processors (DSP), microcontrollers and microprocessors, and low-voltage logic circuits, including field programmable gate array (FPGA) systems.

OM955 Series Switching Regulator
Maximum Ratings @ T_A=25°C (unless otherwise specified)