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ASUS Z170-PRO (Intel Z170) Motherboard Review

By: Steven Bassiri | Socket LGA 1150/1151 in Motherboards | Posted: Mar 8, 2016 2:36 pm
TweakTown Rating: 91%Manufacturer: ASUS

Circuit Analysis




Now we can start to see the differences between the ASUS Z170-A and the Z170-Pro.





This VRM is an 8+2 phase (VCore + iGPU).




ASUS is using pretty much the same VRM as they did on the Z170-A. The ASP1400B is an unknown PWM (not IR35201 or IR35203 because of pin count, and most likely not one of the common Intersil PWMs). It can output at least 4+2 phases. The "+2" phases are provided to two drivers labeled "CE1" and output to two low-side and a single high-side MOSFET for each iGPU phase. The first four phases each goes to a "C1E" driver which outputs to two sets of one low-side and high-side MOSFET and two inductors. The eight phases are created by doubling the driver output. The high-side MOSFETs are ON Semiconductor NTMFS4C09N, and the low-side are NTMFS4C06N.




The VCCSA gets power from a single phase VR using the same MOSFETs as the CPU VRM and a Richtek PWM. The VCCIO gets power from a Texas Instruments 10A integrated step-down regulator.




The memory VRM uses the same components as the VCCSA VRM.

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