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.