DALLAS, Nov. 3, 2021 /PRNewswire/ -- Texas
Instruments (TI) (Nasdaq: TXN) today introduced a new bidirectional
buck/boost converter with an ultra-low quiescent
current (IQ) of 60 nA – one-third the IQ
of competing boost converters. The TPS61094 buck/boost converter
integrates a buck mode for supercapacitor charging while providing
ultra-low IQ, enabling engineers to extend battery life
by as much as 20% when compared to commonly used hybrid-layer
capacitors (HLCs). Supercapacitor charging and discharging helps
support peak loads and backup power, which are important for
continuous operation in battery-powered industrial applications
such as smart meters, smoke detectors and video doorbells, as well
as medical applications. For more information, see
www.ti.com/tps61094-pr.
Engineers designing battery-operated systems frequently face a
common design challenge: a need to achieve high efficiency at no-
or light-load conditions, in the low milliampere or microampere
range. This requires power supplies to regulate their output while
maintaining ultra-low supply current in the nanoampere range. The
TPS61094 combines two key benefits that previously were trade-offs,
the design simplicity of using an integrated buck/boost converter
and the extended battery life enabled by high output current and
low IQ. To learn more, read the technical article,
"3 benefits of using a low-IQ buck/boost converter to
extend battery life in flow meters."
Support peak loads and backup power from a supercapacitor
while maintaining low IQ
Today's lithium thionyl chloride (Li/SOCl₂) battery-based
designs often manage peak load with HLCs that are expensive, and
not optimal for controlling charge current. The TPS61094's combined
low IQ of 60 nA and supercapacitor charging and
discharging enable engineers to replace HLCs with supercapacitors
for peak load support and to extend battery life as much as 20% in
applications that must run on a single battery for 10 years or
more. For more information about designing the TPS61094 into smart
meter systems, read the application note, "A long-lifetime,
cost-competitive solution in smart meters based on the
TPS61094."
Similarly, the TPS61094 can provide backup power in applications
that require safe power-down or last-gasp communication during a
power outage. To learn more, read the technical article, "Effective
ways to implement backup power from supercapacitors."
Deliver twice the output current with the industry's lowest
IQ
In addition to extending battery life, the industry's
lowest-IQ buck/boost converter has a 2-A inductor
current limit in boost operation. Therefore, the TPS61094 doubles
the output current of competitive boost converters.
The additional output current enables the TPS61094 to support
radio standards – such as narrowband Internet of Things (NB-IoT),
LTE-M, Wi-SUN®, MIOTY, Bluetooth® and wireless M-Bus – over a wider
input voltage range. As an example, the TPS61094 can support more
than 250 mA of output current down to an input voltage of 0.7
V.
Reduce component count by up to 50% and simplify
designs
Typical industrial applications such as smart meters require
several power components for backup power features or peak load
support. Integrating a buck charger and a boost converter into a
single IC removes the need for a discrete buck charger, inductor
and two external capacitors, which can reduce component count by
50% and free up board space.
Additionally, the integration of the buck charger and boost
converter on the TPS61094 allows design engineers to easily control
the handshake between all functions, delivering a more seamless
transition between operating modes.
Package, availability and pricing
The TPS61094 is now
available through TI and authorized distributors in a
2.0-mm-by-3.0-mm, 12-pin very very thin small outline no-lead
(WSON) package and is priced at US$1.20 in 1,000-unit quantities. Full and custom
quantity reels are available on TI.com and through other channels.
The TPS61094EVM-066 evaluation module is available on TI.com for
US$99. Multiple payment and shipping
options are available on TI.com.
About Texas Instruments
Texas Instruments Incorporated
(Nasdaq: TXN) is a global semiconductor company that designs,
manufactures, tests and sells analog and embedded processing chips
for markets such as industrial, automotive, personal electronics,
communications equipment and enterprise systems. Our passion to
create a better world by making electronics more affordable through
semiconductors is alive today, as each generation of innovation
builds upon the last to make our technology smaller, more
efficient, more reliable and more affordable – making it possible
for semiconductors to go into electronics everywhere. We think of
this as Engineering Progress. It's what we do and have been doing
for decades. Learn more at TI.com.
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SOURCE Texas Instruments