ASRock Fatal1ty Z87 Professional Motherboard
Voltage Regulator
Contents
The CPU voltage regulator circuit of the ASRock Fatal1ty Z87 Professional has 12 phases for the CPU. The voltage regulator is controlled by an ISL6379 chip, which uses a digital design. This controller provides six phases, an each of them is connected to a phase doubler chip, creating the 12 phases that are available. Each phase is driven by a single chip that has the two required MOSFETs (“low side” and “high side”) inside, however there were no identifying markings on it.
Figure 10: Voltage regulator circuit
The ASRock Fatal1ty Z87 Professional uses solid capacitors and ferrite-core coils. If you want to learn more about the voltage regulator circuit, please read our tutorial on the subject.