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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- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and Z170-PRO Overview]
- Page 3 [ASUS Z170-PRO Circuit Analysis]
- Page 4 [ASUS Z170-PRO Circuit Analysis Continued]
- Page 5 [BIOS and Software]
- Page 6 [Test System Setup]
- Page 7 [Overclocking]
- Page 8 [CPU, Memory, and System Benchmarks]
- Page 9 [System IO Benchmarks]
- Page 10 [Thermal Imaging and Power Consumption]
- Page 11 [What's Hot, What's Not & Final Thoughts]