1.1 Features 1

• Intel VR13 Serial VID (SVID) Compliant

• Full VR13 Server Feature Set Including Digital

Input Power Monitor

• Programmable Loop Compensations

• Configurable with Non-Volatile Memory (NVM) for

Low External Component Counts

• Individual Phase Current Calibrations and Reports

• Dynamic Phase Shedding with Programmable

Current Threshold for Optimizing Efficiency at Light

and Heavy Loads

• Fast Phase-Adding for Undershoot Reduction

(USR)

• Backward VR12.0 and VR12.5 Compatible

• 8-Bit DAC with Selectable 5 mV or 10 mV

Resolution and Output Ranges from 0.25 V to

1.52 V or 0.5 to 2.8125 V for Dual Channels

• Driverless Configuration for Efficient High-

Frequency Switching

• Fully Compatible with TI NextFET™ Power Stage

for High-Density Solutions

• Accurate, Adjustable Voltage Positioning

• Patented AutoBalance™ Phase Balancing

• Selectable, 16-level Per-Phase Current Limit

• PMBus™ System Interface for Telemetry of

Voltage, Current, Power, Temperature, and Fault

Conditions

• Dynamic Output Voltage Transitions with

Programmable Slew Rates via SVID or PMBus

Interface

• Conversion Voltage Range: 4.5 V to 17 V

• Low Quiescent Current

1.2 Applications

• ASIC Needs Dual Power Rails

• High-Performance Processor Power

1.3 Description

The TPS53679 is a fully VR13 SVID compliant step-down controller with dual channels, built-in nonvolatile

memory (NVM), and PMBus™ interface, and is fully compatible with TI NexFET ™power stage.

Advanced control features such as D-CAP+™ architecture with undershoot reduction (USR) provide fast

transient response, low output capacitance, and good current sharing. The device also provides novel

phase interleaving strategy and dynamic phase shedding for efficiency improvement at different loads.

Adjustable control of VCORE slew rate and voltage positioning round out the Intel® VR13™ features. In

addition, the device supports the PMBus communication interface for reporting the telemetry of voltage,

current, power, temperature, and fault conditions to the systems. All programmable parameters can be

configured by the PMBus interface and can be stored in NVM as the new default values to minimize the

external component count.

The TPS53679 device if offered in a thermally enhanced -pin QFN packaged and is rated to operate from

–40°C to 125°C.