1 Features
1• Complete integrated power solution allows
small footprint, low-profile design
• 10-mm × 10-mm × 4.3-mm package
• Efficiencies up to 95%
• Eco-mode™ / light load efficiency (LLE)
• 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 2.95 V
• Adjustable switching frequency
(200 kHz to 1.2 MHz)
• Synchronizes to an external clock
• Provides 180° out-of-phase clock signal
• Adjustable slow-start
• Output voltage sequencing / tracking
• Power-good output
• Programmable undervoltage lockout (UVLO)
• Overcurrent and overtemperature protection
• Prebias output start-up
• Operating temperature range: –40°C to +85°C
• Enhanced thermal performance: 13.3°C/W
• Meets EN55022 Class B Emissions

2 Applications
• Broadband and communications infrastructure
• Automated test and medical equipment
• Compact PCI / PCI express / PXI express
• DSP and FPGA point-of-load applications

3 Description
The TPS84A20 is an easy-to-use integrated power
solution that combines a 10-A DC/DC converter with
power MOSFETs, an inductor, and passives into a
low profile, QFN package. This total power solution
allows as few as three external components and
eliminates the loop compensation and magnetics part
selection process.
The 10-mm × 10-mm × 4.3-mm QFN package is easy
to solder onto a printed circuit board and allows a
compact point-of-load design. Achieves greater than
95% efficiency and excellent power dissipation
capability with a thermal impedance of 13.3°C/W. The
TPS84A20 offers the flexibility and the feature-set of
a discrete point-of-load design and is ideal for
powering a wide range of ICs and systems.
Advanced packaging technology affords a robust and
reliable power solution compatible with standard QFN
mounting and testing techniques.