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