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ASRock X370 Taichi (AMD X370) Motherboard Review (Page 3)

By Steven Bassiri from Mar 21, 2017 @ 8:35 CDT
TweakTown Rating: 93%Manufacturer: ASRock

Circuit Analysis

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The X370 Taichi's Taichi is lost when the heat sinks are removed because of how the heat sinks and silkscreen match up.

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The VRM on the motherboard is very strong, after doubling we get 12+4 phases for the core voltage and SOC voltage. The International Rectifier (now Infineon) IR35201 fully digital PWM is being used in 6+2 phase mode instead of 7+1 or 8+0 phase mode. It is one of the best digital PWMs on the market.

Each of its PWM channels is sent to an IR3598, doubler and dual driver chip, which then outputs to two Texas Instruments CSD87350Q5D NexFETs. The NexFETs are rated 25A at 90% efficiency and 40A maximum. The inductors are high-quality 60A parts, and the capacitors are 12K FP Japanese capacitors.

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The IR3598 takes in a single PWM channel, doubles it to two, and then controls two phases through two integrated drivers. The memory VRM uses a UPI UP1674 two-phase PWM that controls two CSD87350Q5D NexFETs.

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