International Rectifier Corp. (IR, El Segundo, CA) introduced its new IR3093 three-phase, interleaved, pulse-width modulation (PWM), control IC that supports several the AMD Athlon&ytade, AMD Opteron™, AMD Athlon64™ and Intel® VR10.X processors. Typical applications include desktop computer motherboards, voltage regulator modules, video graphics cards and telecom single in-line modules.
The IR3093 is suitable for space-constrained systems requiring greater than 60 A of load current, and integrates MOSFET drivers, reducing part count by 75%. The IR3093 operates from a single 12 V supply and offers a linear regulator to power the gate drivers. The regulator output voltage can be programmed to minimize switching losses and optimize efficiency. A programmable oscillator, with a frequency range of 100 kHz to 540 kHz, gives additional flexibility to improve system efficiency and transient response. The output voltage can be programmed with either a five-bit or six-bit voltage identification code with 0.5% set-point accuracy.
The IR3093M PWM IC is available now in the MLPQ-48, 7 mm x 7 mm package. Pricing is $3.10 each in 10,000-unit quantities.