ADP3212/NCP3218
high- and low-side switches. Due to the asynchronous
operation, the switching frequency becomes slower as the load
current decreases, resulting in good power conversion
efficiency with very light loads.
GPU MODE
The ADP3212/NCP3218 can be used to power IMVP-6.5
GMCH. To configure the ADP3212/NCP3218 in GPU, connect
PH1 to VCC and connect PH0 to GND. In GPU mode, the
ADP3212/NCP3218 operates in single phase only. In GPU
mode, the boot voltage is disabled. During start up, the output
voltage ramps up to the programmed VID voltage. There is no
other difference between GPU mode and normal CPU mode.
Table 5 summarizes how the ADP3212/NCP3218 dynamically
changes the number of active phases and transitions the
operation mode based on system signals and operating
conditions.
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