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ASRock X370 Gaming-ITX/ac Gaming (AMD X370) Motherboard

By Steven Bassiri from Jan 20, 2018 @ 19:00 CST
TweakTown Rating: 91%Manufacturer: ASRock

Circuit Analysis

 

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Now we can see exactly what's going on with the motherboard.

 

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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.

 

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It seems that the memory VRM uses a Monolitic Power Systems MPQ8636 4/10/20 amps step-down converter.

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