Building blocks create multiphase power systems

Power stage is optimised for very low EMI, eliminating the need for power-hungry external snubber circuits in EMI-sensitive designs such as consumer game consoles.

International Rectifier has introduced the iP2005A, a fully optimised power stage solution for high current synchronous buck multiphase convertors used in gaming, computing and communications applications.

The iP2005A is 40% smaller in size compared with the previous generation device while its efficient operation up to 1.5MHz allows designers to further reduce board space by minimising the value of output capacitors and inductors.

The iP2005A is optimised for very low EMI, eliminating the need for external snubber circuits in EMI-sensitive designs such as consumer game consoles.

By eliminating external snubbers, the iP2005A reduces per phase power loss by up to 2.3W compared with the previous generation device that required an external resistor and capacitor snubber with values of 2.2ohm and 10nF, respectively.

Available in a 7.7 x 7.7 x 1.7mm LGA package, each iP2005A building block is capable of delivering up to 40A at 0.8 to 5.5V output.

By using these building blocks in a multiphase system, currents up to 160A can be achieved with an industry standard four-phase controller.

In addition to an external PWM controller, only input and output capacitors and an output inductor at each phase are required.

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