Now we can see exactly what's going on with the motherboard.
The VRM is in a 6+2 phase configuration for the CPU VCore and SoC phases. The main PWM is an Intersil ISL95712 4+2 phase PWM in a 3+2 phase configuration. The PWM controller features two integrated VCore drivers and one integrated SoC driver, so ASRock adds a few ISL6625A drivers.
Each two power stages for the VCore is connected to one driver, while the SoC gets one driver per phase. The MOSFETs are dual N-channel Sinopower SM7341EHKP, so you only need one per phase (VCore), but ASRock added two per phase for the SoC VRM. We also find high-current inductors and 12K capacitors.
It seems that the memory VRM uses a Monolitic Power Systems MPQ8636 4/10/20 amps step-down converter.
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- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and X370 Gaming-ITX/ac Gaming Overview]
- Page 3 [ASRock X370 Gaming-ITX/ac Gaming Circuit Analysis]
- Page 4 [ASRock X370 Gaming-ITX/ac Gaming Circuit Analysis Continued]
- Page 5 [BIOS and Software]
- Page 6 [Test System Setup]
- Page 7 [Overclocking]
- Page 8 [CPU, Memory, and System Benchmarks]
- Page 9 [System IO Benchmarks]
- Page 10 [Thermal Imaging and Power Consumption]
- Page 11 [What's Hot, What's Not & Final Thoughts]