Enriched Asrock Z690 PG Velocita PCB Breakdown notes
Added 2022-07-07 03:56:34 +0000 UTC8 layer PCB. Having more PCB layers CAN help reduce the impedance of power planes. Which can lead to lower VRM+PCB operating temperatures and better voltage regulation.
Extra PCB layers can also help with RAM overclocking.
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Vcore VRM
CONTROLLER
RAA229131 20 phase controller running 16+1 (+1 for iGPU)
MOSFETs
16x ISL99360 60A SPS
MOSFET+INDUCTOR EXPECTED POWER LOSS
at 1.2V and 500KHz
200A ~16W
300A ~26W
400A ~36W
500A ~53W
OUTPUT FILTERING
150nH inductors
12x 560uF through hole aluminium polymers. 12K hours at 105C rated Nichicon FPcaps
4?x 330uF 2 terminal SMD tantalum capacitors in CPU socket
INPUTFILTERING
3x 270uF through hole aluminium polymers. 12K hours at 105C rated Nichicon FPcaps
6x 100uF 2 terminal SMD tantalum capacitors
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iGPU
CONTROLLER
RAA229131 1phase
MOSFETS
ISL99360 60A SPS
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VCCIN VRM
RAA229001 8phase controller running 2+0 phases
MOSFETS
ISL99360 60A SPS
MOSFET+INDUCTOR EXPECTED POWER LOSS
at 1.8V and 500KHz
40A 4W
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RAM
DDR5
Daisy chain topology
All DQ (DQ=data queue) traces are on internal PCB layers (basically "shielding")
CAD bus at least partially on top and bottom layer of PCB
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Overclocking Features
POST code
internal Power and Reset button
internal clear CMOS button
rear IO BIOS flash button
VRM fan (for cheating in VRM thermal tests :P)
