Powering Freight & Transportation - Power Systems Design

26
ON THE ROAD
ther ensure compatibility, the FDMF6704
has its PWM threshold levels tailored to
meet a broad range of controllers available
in the market. Fairchild’s advanced
SyncFET technology is integrated
within the module’s low-side MOSFET
further ensuring higher performance.
The FDMF6704 utilizes lead-free (Pbfree)
terminals and has been characterized
for moisture sensitivity in accordance
with the Pb-free reflow requirements
of the joint IPC/JEDEC standard
J-STD-020. All of Fairchild’s products
are designed to meet the requirements
of the European Union’s Directive on the
restriction of the use of certain substances
(RoHS).
electronica: Hall A4 Stand 121
TI Launches Industry-Thinnest 500 mA Converter Solution
www.fairchildsemi.com
At TI’s recent press conference in Freising, Germany, I was able to get the company’s latest in good
news from TI for portable equipment designers from Uwe Mengelkamp, Director DC/DC Converters
(worldwide) for Texas Instruments.
Texas Instruments announced the
industry’s smallest and thinnest 500mA,
step-down DC/DC converter solution
for space-constrained applications. The
new product, TPS62601, gives portable
designers the unique ability to add more
features and functions on a handheld
device. This high-efficiency power
management integrated circuit is the
first 6MHz, 500mA converter to achieve
a 13mm 2 solution size with an ultra-thin
0.6mm total height, vital for competitive
advantage in portable devices.
Leveraging TI’s long standing analog
manufacturing technology, the new
TPS62601 converter achieves up to 89%
power efficiency and only 30µA typical
operating quiescent current – all from
a 0.9mm x 1.3mm chip scale package
roughly the size of a flake of pepper. The
synchronous, switch-mode device’s fixed
frequency of 6 MHz allows the use of
only one 0.47µH inductor with a height of
0.6mm and two low-cost ceramic capacitors,
without compromising performance
and efficiency.
“Portable system designers continue
to desire more features on their devices,
Texas Instruments
Uwe Mengelkamp, Director DC/DC Converters
(worldwide) for TI.
which require smaller, efficient DC/DC
converters to maintain long battery life
and system run-times,” said Uwe Mengelkamp,
Director DC/DC Converters, TI.
“The TPS62601 gives portable designers
access to the smallest, thinnest 500mA
DC/DC solution, which simplifies design
and reduces board space and time-tomarket.”
The TPS62601 can deliver DC voltage
regulation accuracy of +/-1.5%. In addition,
the device’s excellent load transient
response, wide input voltage range of
2.3 V to 5.5V and 1.8V of output allows
it to effectively support single-rail voltage
requirements as designers add new features
and functionality. The TPS62601
supports many applications, such
as memory modules, GPS modules,
wireless micro-modules used in ultrathin
smart phones, digital still cameras,
portable disk drives and media players.
The converter also applies energysaving
techniques to help maximize battery
run-time. For example, the converter
automatically enters a power save mode
during light-load operating conditions via
an automatic pulse frequency modulation
and pulse width modulation switching
feature. In shutdown mode, the
device’s current consumption is reduced
to less than 1µA.
The TPS62601 is available immediately
in volume from TI and its authorized
distributors. The device comes
in a highly reliable, six-pin, wafer chip
scale (0.9mm x 1.3mm) package and
has a suggested resale price of $1.45
each in quantities of 1,000 units. The
TPS62601EVM-327 evaluation module,
application notes and TI’s online Power
Management selection tool are available
through power.ti.com.
In addition to the TPS62601, TI provides
a broad range of power management
battery management solutions for
handheld devices. Examples include
the new 3-MHz bq24150, switch-mode
battery charger integrated circuit, the
system-side bq27500 battery fuel gauges,
and TI’s DC/DC converters that support
RF power amplifiers and core supply voltages.
Complete system block diagrams
with analog and digital solutions for
OMAP 3 processor-based applications
can be found at: www.ti.com/omap3.
electronica: Hall A4 Stand 414
Bluetooth and Wi-Fi modules or other www.ti.com
Power Systems Design October 2008
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The Microchip name, logo and dsPIC are registered trademarks of Microchip Technology Incorporated in the USA and other countries. All other trademarks and registered trademarks are the property
of their respective owners. © 2008 Microchip Technology Inc. All rights reserved. ME190Eng/03.08