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)
• Intel® VR14 SVID compliant with PSYS support
• Backward compatible to VR13.HC/VR13.0 SVID
• Automatic NVM fault status logging
• Dynamic current limit for improved Fast-Vmode
performance
• Fully compatible with TI NexFET™ power stage for
high-density solutions
• 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
• Accurate, adjustable, adaptive voltage positioning
(AVP, load line) support
• Individual per-phase IMON calibration, with multislope
gain calibration to increase system accuracy.
• Fast phase-adding for transient undershoot
reduction
• Diode braking with programmable timeout for
reduced transient overshoot
• Patented AutoBalance™ current sharing
• 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
• Driverless configuration for efficient highfrequency
switching
• 5.00 mm × 5.00 mm, 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 TPS53689 is a VR14 SVID compliant step
down controller with two channels, built-in non-volatile
memory (NVM), and PMBus™ interface, and is fully
compatible with TI NexFET™ power stages. Advanced
control features such as the D-CAP+ architecture with
undershoot reduction (USR) and overshoot reduction
OSR) provide fast transient response, low output
capacitance, and good dynamic current sharing.
The device also provides novel phase interleaving
strategy and dynamic phase shedding for efficiency
improvement at different loads. 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.
The TPS53689 device is offered in a thermally
enhanced 40-pin QFN packaged and is rated to
operate from –40°C to 125°C.