uP9512R
uPI Semiconductor
8/7/6/5/4/3/2/1-Phase Synchronous-Rectified Buck Controller with SMBus Digital Interface
Package Type: VQFN5x5-40L
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. The uP9512R uses per-channel inductor DCR current sensing for channel current balance and channel current limit. The continuous total DCR current sensing is used for load line programming and total output current protection. The uP9512R also provides hardware setting to adjust the operating phase number in different load current state. Other features include adjustable soft-start, under voltage protection, over voltage protection and power good output. The uP9512R is available in a VQFN5x5-40L package.
Data sheet
