Adaptive voltage scaling power supply for communication and enterprise storage ASIC core rails

This design is for implementing an ASIC Core AVS power supply using the the TPS53355 PowerStack Synchronous Buck SWIFT dc/dc converter and the LM10011 VID chip. The design accepts a 10V to 14V input and provides a 1V 20A output. The LM10011 is a precision, digitally programmable device, allowing for the output voltage of the Buck Converter to be adjusted for range and precision in response to ASIC Core usage scenarios.

Features
 • 0.6% load regulation at 12VIN, 0.82V VOUT, from 0 A to 20A load
 • 4 Bit Vid Input for VOUT AVS from 0.6746V to 0.9605V
 • 67.9°C max case temperature at 20A load
 • 340mm² total power supply area
 • D-CAP Mode reduces undershoot/overshoot to 15mV/22mV in response to 10A load transient
 • 84% efficiency at 12VIN, 0.82V VOUT (VID = 1000)

Parts Include:

LM10011   1% Accuracy 4/6-Bit VID Voltage Programmer for Point of Load Regulator w/ Adj Start-Up Current
TPS53355  1.5V to 15V Input (4.5V to 25V Bias), 30A Synchronous Step-Down SWIFT™ Converter with Eco-mode™ 

Learn more by downloading the reference design below