The uP9512R is an 8/7/6/5/4/3/2/1-phase PWM controller
specifically designed to provide high-precision output
voltage system for next generation GPUs. The uP9512R
provides programmable output voltage and active voltage
positioning functions to adjust the output voltage as a
function of the load current, so it is optimally positioned for
a load current transient

The uP9512R supports NVIDIA Open Voltage Regulator
type 4i+ with PWMVID feature. The PWMVID input is
buffered and filtered to generate accurate reference voltage
and the output voltage is precisely regulated to the reference
input. The integrated SMBus interface provides user the
flexibility to optimize the performance and efficiency.