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ASRock Fatal1ty Z270 Gaming K6 Motherboard Review (Page 3)

By: Steven Bassiri from Feb 6, 2017 @ 17:23 CST
TweakTown Rating: 91%Manufacturer: ASRock

Circuit Analysis

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The Z270 Gaming K6 has a lot of interesting hardware we will now examine.

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The motherboard's VRM is in a 6+4 phase configuration. The four phases on the right are for the iGPU, then six phases are for the CPU, and the remaining two chokes are for the VCCSA and VCCIO phases. The Intersil ISL95856 4+3 phase PWM is used for the CPU+iGPU (3+2). The PWM has two integrated drivers for the CPU and one for the iGPU outputs, ASRock adds two ISL6625A drivers, one for the CPU and one for the iGPU.

To get 6+4 phases from the 3+2, ASRock doubles the number of power stage components (choke, high-side FET, and low-side FET). The MOSFETs are from Sinopower, the SM4336 and SM4337 for the low-side and high-side. ASRock is using their 12K FP caps, which is a quite high rating for a motherboard of this caliber.

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A Richtek RT8120 single-phase PWM controller with integrated driver outputs its driver signal to two sets of phases. The MOSFETs are AP4034GYT N-channel power MOSFETs from Advanced Power Electronics.

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