Gigabyte Z87X-UD3H Motherboard
Voltage Regulator
Contents
The CPU voltage regulator circuit of the Gigabyte Z87X-UD3H has eight phases for the CPU. The voltage regulator is controlled by an IR3563B integrated circuit, which uses a digital design. Each phase is driven by an IR3553 integrated circuit, which incorporates the three required transistors (“driver,” “low side,” and “high side”). This integrated circuit provides efficiency up to 93.2%, since it can switch at up to 1 MHz (usually voltage regulator circuits operate at 250 kHz).
Figure 9: Voltage regulator circuit
The Gigabyte Z87X-UD3H uses solid, Japanese electrolytic capacitors, from Chemi-Con. 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.