The uP9512 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 uP9512 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 uP9512 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.

The uP9512 supports Advanced DrMOS power module with current reporting function (DrMOS) application. The REFOUT provides an input reference voltage for DrMOS’s REFIN pin. The uP9512 uses the current reporting signal of DrMOS for channel current balancing. The uP9512 also provides hardware setting to adjust the operating phase number in different load current state.

Other features include adjustable soft-start, channel current limit, under voltage protection, over voltage protection and power good output. The uP9512 is available in a VQFN5x5- 40L package.

• Middle-High End GPU Core Power Supplies