ASRock FM2A88X-ITX+ Motherboard
Voltage Regulator
Contents
The CPU voltage regulator circuit of the ASRock FM2A88X-ITX+ has four phases for the CPU main voltage (VDD a.k.a. Vcore) and two for the CPU VDDNB (integrated memory controller, HyperTransport interface controller, and L3 memory cache) voltage. Therefore, it uses a “4+2” configuration, using a digital design.
The voltage regulator is controlled by an Intersil ISL6377 chip. Each phase is driven by a TI NexFET CSD87350Q5D (“87350D”) chip, which includes the two required MOSFETs for each phase.
The voltage regulator circuit is shown in Figure 6. According to ASRock, it supports CPUs up to 100 W.
Figure 6: voltage regulator circuit
The ASRock FM2A88X-ITX+ uses golden Japanese high-quality solid electrolytic capacitors. All coils on this motherboard are ferrite-core models.
If you want to learn more about the voltage regulator circuit, please read our tutorial on the subject.
