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Voltage Regulator

The CPU voltage regulator circuit of the ASRock X79 Fatal1ty Champion has 12 phases for the CPU main voltage (Vcc a.k.a. Vcore), two for the CPU VSA voltage (memory controller), and two for the CPU VTT voltage (PCI Express and DMI interfaces). Therefore, it uses a “12+2+2” configuration. The voltage regulator is controlled by an ISL6367 integrated circuit, using a hybrid design.

ASRock X79 Fatal1ty Champion motherboardFigure 10: Voltage regulator circuit

The ASRock X79 Fatal1ty Champion uses SMD (a.k.a. highly-conductive polymerized or simply Hi-c) electrolytic capacitors on all voltage regulator circuits, including the memory one. All coils on this motherboard are ferrite-core models, which can provide up to 20% improvement in efficiency. The rest of the electrolytic capacitors used on this motherboard are solid, manufactured in Japan.

If you want to learn more about the voltage regulator circuit, please read our tutorial on the subject.

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Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.