New-Tech Europe Magazine | April 2017

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new products
with Vishay’s VSMD66694 660 nm and 940 nm dual color
emitting diodes, the device is ideal for SpO2 measurement
in medical monitors. In addition, it provides high speed
photo detection in smoke detectors with dual-wavelength
light sources and automotive dust and particle sensors in
combination with a red diode.
The VEMD5080X01 features a ± 65° angle of half-sensitivity,
a wide temperature range of -40 °C to +110 °C, and 950 nm
wavelength of peak sensitivity. The robust device is tested to
AEC-Q101 standards for Automotive Grade semiconductors.
RoHS-compliant, halogen-free, and Vishay Green, the
photodiode provides a moisture sensitivity level (MSL) of
4 in accordance with J-STD-020 for a floor life of 72 hours.
Wettable flanks allow for optical solder joint inspection.
Samples and production quantities of the VEMD5080X01 are
available now, with lead times of eight to 10 weeks for large
orders. Pricing for U.S. delivery only starts at $0.51 per piece.
Industry’s first multiphase bidirectional
current controller from TI
Texas Instruments (TI) (NASDAQ: TXN) today introduced
the industry’s first fully integrated multiphase bidirectional
DC/DC current controller, which efficiently transfers electric
power greater than 500 W per phase between dual 48-V
and 12-V automotive battery systems. The highly integrated
LM5170-Q1 analog controller features an innovative
average current-mode control method that overcomes the
challenges of today’s high-component-count, full digital
control schemes. For more information, samples and an
evaluation module, see
TI will demonstrate the LM5170-Q1 controller in booth No.
701 at the Applied Power Electronics Conference (APEC)
in Tampa, Florida, March 27-29, 2017. The LM5170-Q1
is the latest in TI’s portfolio of industry-leading DC/DC
converters, controllers and charge pumps, enabling
engineers to innovate and differentiate their power supply
designs.
Hybrid electric vehicles use both a high-voltage 48-V
battery and the standard 12-V automotive battery. Design
engineers typically manage these dual battery systems
using a digital control scheme, which includes multiple
discrete components such as current-sense amplifiers,
gate drivers and protection circuits. These full digital control
schemes are bulky and expensive. To solve this challenge
while improving performance and system reliability, TI
offers a mixed architecture in which the microcontroller
handles higher-level intelligent management, and the
highly integrated LM5170-Q1 analog controller provides
the power conversion. Read the blog post, “Interconnecting
automotive 48V and 12V rails in dual battery systems,”
to learn how to overcome the challenges of designing a
power supply for hybrid electric vehicles.
LM5170-Q1 key features and benefits
Unique design for optimized system cost and performance:
The LM5170-Q1’s average current-mode control method
improves performance, simplifies implementation and
reduces cost. Read the blog post, “Selecting a bidirectional
converter control scheme,” to find out how TI’s average
current-mode control method compares to conventional
control schemes.
High accuracy: The controller’s 1 percent accurate
bidirectional current regulation ensures precise power
transfer.
Power efficient: The LM5170-Q1 achieves greater than 97
percent efficiency.
High precision: The controller monitors current with up to
99 percent accuracy.
High power: Integrated 5-A peak half-bridge gate drivers
for high power capability.
Superior performance: Diode emulation mode of the
synchronous rectifier MOSFETs prevents negative current
and enhances light load efficiency.
Automotive quality: The LM5170-Q1 isAEC-Q100 qualified.
Download the white paper “Driving the green revolution
in transportation,” to learn how advanced electronics are
increasing the automation, safety, comfort and convenience
of electric vehicles.
Availability, packaging and pricing
Available in volume now through the TI store and authorized
distributors, the LM5170-Q1 is offered in a 48-pin, 9-mm
by 9-mm quad flat package (QFP) and priced at US$5.84
in 1,000-unit quantities. Order the LM5170EVM-BIDIR
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