1 FEATURES
1• Complete Integrated Power Solution Allows
Small Footprint, Low-Profile Design
• Efficiencies Up To 96%
• Wide-Output Voltage Adjust
0.6 V to 5.5 V, with 1% Reference Accuracy
• Supports Parallel Operation for Higher Current
• Optional Split Power Rail allows
input voltage down to 1.6 V
• Adjustable Switching Frequency
(250 kHz to 780 kHz)
• Synchronizes to an External Clock
• Adjustable Slow Start
• Output Voltage Sequencing and Tracking
• Power Good Output
• Programmable Undervoltage Lockout (UVLO)
• Output Overcurrent Protection (Hiccup Mode)
• Overtemperature Protection
• Prebias Output Start-up
• Operating Temperature Range: –40°C to +85°C
• Enhanced Thermal Performance: 13°C/W
• Meets EN55022 Class B Emissions
• Design Help visit http://www.ti.com/TPS84621

2 APPLICATIONS
• Broadband and Communications Infrastructure
• Automated Test and Medical Equipment
• Compact PCI, PCI Express and PXI Express
• DSP and FPGA Point of Load Applications
• High Density Distributed Power Systems

3 DESCRIPTION
The TPS84621 is an easy-to-use integrated power
solution that combines a 6-A DC-to-DC converter with
power MOSFETs, an inductor, and passives into a
low profile, BQFN package. This total power solution
allows as few as three external components and
eliminates the loop compensation and magnetics part
selection process.
The 9×15×2.8 mm BQFN package is easy to solder
onto a printed circuit board and allows a compact
point-of-load design with greater than 90% efficiency
and excellent power dissipation with a thermal
impedance of 13°C/W junction to ambient. The
device delivers the full 6-A rated output current at
85°C ambient temperature without airflow.
The TPS84621 offers the flexibility and the featureset
of a discrete point-of-load design and is ideal for
powering performance DSPs and FPGAs. Advanced
packaging technology afford a robust and reliable
power solution compatible with standard QFN
mounting and testing techniques.