Gigabyte Z77-HD4 Motherboard
Voltage Regulator
Contents
The CPU voltage regulator circuit of the Gigabyte Z77-HD4 has four phases for the CPU main voltage (Vcc a.k.a. Vcore), one for the CPU VSA (a.k.a. system agent) voltage, and one for the embedded GPU (VAXG). Therefore, it uses a “4+1+1” configuration. The voltage regulator is controlled by an IR3564 integrated circuit, which uses a digital design. Each phase uses three RJK0393DPA MOSFETs, which present a maximum RDS(on) of 5.9 mΩ.
Figure 8: Voltage regulator circuit
The Gigabyte Z77-HD4 uses solid electrolytic capacitors. All coils on this motherboard are ferrite-core models, which can provide up to 20% improvement in efficiency.
If you want to learn more about the voltage regulator circuit, please read our tutorial on the subject.