General Description
The uP9512Q is a 4/3/2/1-phase PWM controller
specifically designed to provide high-precision output
voltage system for next generation GPUs. The uP9512Q
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 uP9512Q supports NVIDIA Open Voltage Regulator
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.
The uP9512Q supports Advanced DrMOS power module
with current reporting function (DrMOS) application. The
REFOUT provides an input reference voltage for DrMOS’s
REFIN pin. The uP9512Q uses the current reporting signal
of DrMOS for channel current balancing. The uP9512Q also
provides hardware setting to adjust the operating phase
number in different load current state.
Other features include channel current limit, under voltage
protection, over voltage protection and power good output.
The uP9512Q is available in a WQFN4x4-32L package.

Features
†Support NVIDIA’s PWMVID Technology
† SMBus Interface for Performance and Efficiency
Optimization
„ Dynamic Programmable VR Parameters
„ Programmable Protection Thresholds
„ VR Output Reporting
† Selectable 4/3/2/1-Phase Operation by Hardware
Setting
† Support up to 2MHz Operation Frequency
† REFOUT Reference Voltage for Advanced DrMOS
Power Module with Current Reporting Function
(DrMOS)
† Auto-Phase Shedding
† Power State Input (PSI)
† Power Good Indication
† Channel Current Limit Protection
† Total Output Over Current Protection
† Over/Under Voltage Protection
† Over Temperature Protection
† RoHS Compliant and Halogen Free