New
#821
Parts of a Craphics Card
Data sheet to the uP9511 8 Phase Buck Controller(and MOSFETs) used on our Nvidia GPUs
http://www.upi-semi.com/files/1486/9...3-c6d5d9c034c4
uP9511 - uPI Group - uPI x UBIQFeature
- Support NVIDIA’s Open VReg Type 8 PWMVID Technology.
- Selectable 8/7/6/5/4/3/2/1-Phase Operation by Hardware Setting.
- Differential Remote Voltage Sensing.
- Continuous Inductor DCR Current Sensing Voltage Adjustment.
- Switching Frequency Adjustment.
- Operating Phase Number Adjustment.
- Adjustable Current Balancing by RDS(ON) Current Sensing.
- Adjustable Soft-Start.
- Channel Current Limit Protection.
- Over/Under Voltage Protection.
- Over Temperature Protection.
- RoHS Compliant and Halogen Free.
Application
- Middle-High End GPU Core Power Supplies
Description
The uP9511 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 uP9511 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 uP9511 supports NVIDIA Open Voltage Regulator 8 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 uP9511 adopts continuous total DCR current sensing for load line programming. The uP9511 provides hardware setting to adjust the operating phase number in different load current state. The uP9511 uses MOSFET RDS(ON) current sensing for channel current balance.