1 Features

• Input voltage range: 4.5 V to 17 V

• Output voltage range: 0.25 V to 5.5 V

• Dual output supporting N+M phase configurations

(N+M ≤ 8, M ≤ 4)

• Native trans-inductor voltage regulator (TLVR)

topology support, with LC open and short

protection

• Fully compatible with TI smart power stages

• Supports voltage- and current-source Imon power

stages, with internal 1 kΩ resistor

• Support for traditional (legacy mode) and limp

mode power stage fault identification

• Supports dual side power delivery with 12+ trace

length

• Intel® VR14 SVID compliant with PSYS support

• Backward compatible to VR13.HC/VR13.0 SVID

• Automatic NVM fault status logging

• Enhanced D-CAP+ control to provider superior

transient performance with excellent dynamic

current sharing

• Dynamic phase shedding with programmable

thresholds for optimizing efficiency at light and

heavy loads

• Configurable with non-volatile memory (NVM) for

low external component count

• Individual per-phase IMON calibration, with multislope

gain calibration to increase system accuracy

• Diode braking with programmable timeout for

reduced transient overshoot

• Programmable per-phase valley current limit

(OCL)

• PMBus™ v1.3.1 system interface for telemetry of

voltage, current, power, temperature, and fault

conditions

• Programmable loop compensation through PMBus

• 5.00 mm × 5.00mm, 40-pin, QFN package

2 Applications

• Data center & enterprise computing rack server

• Hardware accelerator

• Network interface card (NIC)

• ASIC and high performance client

3 Description

The TPS53689T is a VR14 SVID compliant step

down controller with trans-inductor voltage regulator

(TLVR) topology support, two channels, built-in nonvolatile

memory (NVM), and PMBus™ interface, and

is fully compatible with TI smart power stages.

Advanced control features such as the D-CAP+

architecture provide fast transient response, low

output capacitance, and good dynamic current

sharing. Adjustable control of output voltage slew

rate and adaptive voltage positioning are natively

supported. In addition, the device supports the PMBus

communication interface for reporting the telemetry

of voltage, current, power, temperature, and fault

conditions to the host system. All programmable

parameters can be configured through the PMBus

interface and can be stored in NVM as the new

default values, to minimize the external component

count.