New portfolio can help make EVs safer while
reducing solution size up to 90% and cost by as much as 50%
DALLAS, May 10, 2022
/PRNewswire/ -- Building on more than two decades of experience
developing new isolation manufacturing technologies and integrated
circuits (ICs) for high-voltage systems, Texas Instruments (TI)
(Nasdaq: TXN) today introduced a new portfolio of solid-state
relays, including automotive-qualified isolated drivers and
switches, that deliver industry-leading reliability to help make
electric vehicles (EVs) safer. The new isolated solid-state relays
also provide the smallest solution size while reducing the
bill-of-materials (BOM) cost of powertrain and 800-V
battery-management systems. For more information, see
ti.com/ssr-pr.
The TPSI3050-Q1 isolated switch driver with an integrated 10-V
gate supply and the TPSI2140-Q1 1,400-V, 50-mA isolated switch both
integrate power and signal isolation across a single barrier using
a unique approach that improves reliability, while significantly
reducing solution size and cost compared to existing
electromechanical relays and solid-state photorelays. The devices
are the first in a new solid-state relays portfolio that will also
include ICs designed for high-voltage industrial applications. To
learn more about the benefits of solid-state relays, read the
technical article, "How to Achieve Higher-Reliability Isolation and
a Smaller Solution Size with Solid-State Relays."
"High-voltage systems are becoming more prevalent, especially
with the increased adoption of EVs. At TI, we are strongly focused
on finding new ways for system designers to solve complex isolation
challenges, such as ensuring reliable and safe vehicle operation as
the industry transitions to 800-V batteries, while also reducing
solution size and cost," said Troy
Coleman, vice president and general manager of Power
Switches, Interface and Lighting at Texas Instruments. "By
integrating more functionality within our isolation technology, our
new solid-state relays enable engineers to reduce the size, cost
and complexity of high-voltage power supplies while maintaining the
safety of next-generation automotive and industrial systems."
Achieve higher system reliability with integrated isolation
technology
The new solid-state relays can disconnect and connect loads
through a single isolation barrier in microseconds – compared to
milliseconds for electromechanical relays – to enable safer
operation of high-voltage automotive systems. The TPSI3050-Q1,
which offers reinforced isolation up to 5 kVRMS, also
provides an operating lifetime that's 10 times higher than
electromechanical relays, which can degrade over time.
Additionally, the TPSI2140-Q1 offers basic isolation up to 3.75
kVRMS, enabling it to achieve more than four times
higher time-dependent dielectric breakdown reliability than
solid-state photorelays.
Reduce system size and cost with integrated power and signal
isolation
The solid-state relays integrate power and signal transfer in a
single chip while also eliminating at least three components from
their designs, significantly reducing solution size while cutting
BOM costs by as much as 50%. The TPSI3050-Q1 reduces solution size
up to 90% compared to mechanical relay solutions by integrating the
functions of an isolated power supply, digital isolator and gate
driver. The TPSI2140-Q1 reduces solution size by as much as 50%
compared to traditional solid-state photorelay solutions by
integrating a signal field-effect transistor and resistors, and
eliminating the need for a reed relay.
Improve safety of 800-V EV battery-management systems
Designed for high-voltage measurements and insulation
monitoring, the TPSI2140-Q1 works with a battery-pack monitor such
as the BQ79631-Q1 to detect insulation faults in 800-V
battery-management systems faster and with higher accuracy than
solid-state photorelays. The TPSI2140-Q1 enables the use of
<1-MΩ resistors and withstands over 300% more avalanche current
than traditional photorelays to help enable safer human-system
interaction.
Package, availability and pricing
The TPSI3050-Q1 and TPSI2140-Q1 are available in pre-production,
1,000-unit quantities only on TI.com at US$1.99 and US$2.75, respectively. Engineers can evaluate
these products with the TPSI3050Q1EVM and TPSI2140Q1EVM evaluation
modules, available on TI.com for US$49 each.
Isolation products that are different by design
The solid-state relays are the latest addition to TI's growing
portfolio of products for isolating signals, power or both. Other
new products include the UCC14240-Q1 isolated DC/DC
bias-supply module, which leverages TI's proprietary, integrated
transformer technology to enable high power density, low
electromagnetic interference and high reliability to improve EV
driving ranges, and the AMC23C12, the industry's first reinforced
isolated comparator. The AMC23C12 combines the functions of
standard comparators with a galvanic isolation barrier while
reducing solution size by 50% and providing ultra-fast isolated
bidirectional overcurrent and overvoltage detection in less than
400 ns. For more information, see https://www.ti.com/isolation.
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