F71872
voltage changing automatically when system is going to run over-clocking or under-clocking. As the sketch
shows as below, due to achieve this action, suggests using F75133S Loading Gauge to be a part that detects
system/CPU loading to decide when issues the over-clocking/under-clocking and trigger VID signals for
system executing. For instance, user would like to ensure system stably and run over-clocking/under-clocking
on MB, the F75133S will sense the PWM duty to know the loading status. If the system loading reach the limit
of over-clocking, F75133S will issue signal to F71872 to trigger Vcore increasing automatically for proper
Vcore for running over-clocking, secondly F75133S issues signal to CLK Gen for over-clocking. That’s what
the F71872 facilitates system steady by auto-changing Vcore with F75133S when runs over-clocking.
Power Supply
PWM
CPU
PWM
Buffer
CLK Gen.
F75133S
Loading
Gauge IC
F71872F
VID Machine
26
July, 2007
V0.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
