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new products
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(PCB), enabling engineers to take
advantage of the small size that
the TPS54A20 offers for industrial
servers or other space-constrained
applications.
Multi-megahertz operation: A 14-
ns minimum on-time allows for
4-/7-/10-MHz operation without
compromising
efficiency
or
electromagnetic interference (EMI)
performance. Download the “Three
Different Buck Converter Circuits to
Convert 12V to 1.2V at >6A Load
Current Reference Design,” which
includes a 1.2-V output voltage for
double-data-rate (DDR) 4 memory
applications.
Availability, packaging and pricing
The new DC/DC converter is
available in volume now from TI and
its authorized distributors. Offered
in a 20-pin, 3.5-mm-by-4-mm-by-1-
mm thermally enhanced HotRod
QFN package, the TPS54A20 is
priced at US$3.25 in 1,000-unit
quantities. Order the 4-MHz, 10-A
TPS54A20EVM-770 synchronous
dual-phase converter evaluation
module and download the PSpice
transient
models.
Ultra-small SWIFT™
step-down converter features
unique topology to achieve
four times higher current
density
Ultra-small SWIFT™ step-down
converter features unique topology
to achieve four times higher current
density
Texas Instruments (TI) (NASDAQ:
TXN) today introduced the
industry’s first 12-V, 10-A, 10-MHz
series-capacitor buck converter
that achieves more than 50 A/cm3
in current density, which is four
times higher than any other 12 V
power management component or
solution available today. The unique
topology of the TPS54A20 SWIFT
synchronous DC/DC converter
enables high-frequency operation
at up to 5 MHz per phase without
special magnetics or compound
semiconductors, which designers
can use for 8-V to 14-V input and
10-A output applications. By using
the step-down converter together
with TI’s WEBENCH® Power
Design tool, engineers can get
their space- and height-constrained
point-of-load (POL) telecom and
networking power-supply designs to
market faster. For more information,
samples and an evaluation module,
visit
www.ti.com/tps54a20-pr-euThe TPS54A20 features a unique
two-phase, series-capacitor DC/
DC buck topology that merges a
switched-capacitor circuit with a
multiphase buck converter. This
capacitive conversion technology
enables efficient, high-frequency
operation and measures as much
as seven times smaller than
conventional converters. For a
quick introduction, watch the video
“How to decrease inductor size in a
10-A DC/DC converter design” and
read the white paper, “Breakthrough
power
delivery
for
space-
constrained applications.” Read the
application note “Introduction to the
Series Capacitor Buck Converter”
that analyzes the technology and
presents example results for a 12-V
input, 1.2-V/10-A output application
demonstrating
higher
peak
efficiency than a conventional buck
converter, while operating at four
times higher switching frequency.
TPS54A20 key features and
benefits
Tiny solution: Small HotRod™
quad flat no-lead (QFN) packaging
and inexpensive, tiny 2- to 5-MHz
inductors enable a 131-mm2
solution size that consumes 50
percent less area than similar 500-
kHz DC/DC converter designs.
Read the blog post, “No small
matter: How to reduce voltage
regulator size.”
Low profile: Measuring less than
2 mm in height, the reduced size,
weight and bill of materials (BOM)
allows placement of tiny 10-A
voltage regulators on the back
side of a printed circuit board
(PCB), enabling engineers to take
advantage of the small size that
the TPS54A20 offers for industrial
servers or other space-constrained
applications.
Multi-megahertz operation: A 14-
ns minimum on-time allows for
4-/7-/10-MHz operation without
compromising
efficiency
or
electromagnetic interference (EMI)
performance. Download the “Three
Different Buck Converter Circuits to
Convert 12V to 1.2V at >6A Load
Current Reference Design,” which
includes a 1.2-V output voltage for
double-data-rate (DDR) 4 memory
applications.
Availability, packaging and pricing
The new DC/DC converter is