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ASRock Z390 Phantom Gaming 7 Motherboard Preview (Page 3)

By Steven Bassiri | May 17, 2019 10:00 am CDT

Circuit Analysis

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The Z390 Phantom Gaming 7 shows us the goods with the heat sinks removed!

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It looks like ASRock has embraced the DrMOS trend of these mid to high-end Z390 motherboards. The CPU VCore is eight phases doubled by four ISL6617 doublers, the iGPU is two phases, and the VCCIO and VCCSA are single phases. The PWM controller is a digital PWM from Intersil, the ISL69138 in a 4+2 phase configuration. The power stages are Vishay DrMOS SiC632A for the iGPU phases and DrMOS SiC634 for the CPU VCore, and both are rated 50A.

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The VCCSA and VCCIO are controlled by APW8720 integrated PWM/driver chips and control smaller MOSFETs from ON Semiconductor. The memory VRM is two phases using the same PWM and double the number of power stage components as the VCCIO or VCCSA phases.

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Steven Bassiri

ABOUT THE AUTHOR - Steven Bassiri

Steven went from a fledgling forum reader in 2003 to one of the internet's brightest stars by 2010. Armed with an information systems degree, a deep understanding of circuitry, and a passion for tech, Steven (handle Sin0822) enjoys sharing his deep knowledge with others. Steven details products down to the component level to highlight seldom explained, and often misunderstood architectures. Steven is also a highly decorated overclocker with several world records under his belt. He brings that knowledge and experience to TweakTown.

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