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new products
The converter is tailored to provide the auxiliary supply
to microcontrollers in IoT devices that are permanently
connected to the Internet or a local network.
The new device belongs to the VIPerPlusTM family of
high-voltage converters, now in its second generation,
and exploits ST’s proprietary BCD (Bipolar-CMOS-
DMOS) technology. BCD allows the integration in a
single chip of a high-performance PWM controller with a
high-voltage logic-level control transistor, protection and
diagnostic circuitry, without significantly impacting the
robustness and reliability of the power transistor.
The VIPER01 enables designers to meet the most
stringent energy-saving standards[1], as it has very low
power consumption and switches automatically to pulse
frequency modulation under light load conditions. It can
be used in fly-back, buck, and buck-boost converter
topologies, while the integrated high-voltage start-up,
sense-FET, error amplifier, and oscillator with jitter allow
a complete application to be designed with the minimum
number of external components.
Key features of the VIPER01 include:
800 V avalanche-rugged Power MOSFET allowing ultra-
wide VAC input range;
Embedded HV start-up and sense-FET;
Current mode PWM controller;
Drain current limit protection;
Wide supply-voltage range from 4.5V to 30V;
Self-supply option allows auxiliary winding or bias
components to be removed;
Jittered switching frequency reduces the EMI filter cost;
Embedded error amplifier with 1.2V reference voltage;
Protections with automatic restart include overload/
short-circuit, line or output OVP, maximum duty cycle
counter, VCC clamp;
Embedded thermal shutdown;
Built-in soft-start for improved system reliability.
The VIPER01 comes with a set of tools including
evaluation kits, application notes, and spice models to
jumpstart more robust, safer, and cost-effective SMPS
designs.
VIPER01 is available now in volume at a price of US$
0.364 for 1,000 units.
For further information please visit
www.st.com/viperplus[1] These include the US Energy Star and the European
EuP Lot 6 tier 2 from EC Ecodesign Directive.
e2v increases space presence with new
QML class V certified space grade data
converters
e2v’s latest 12-bit space grade digital-to-analog data
converter (DAC) has been awarded QMLclass V certification
from the US Defense Logistics Agency (DLA).
e2v’s EV12DS130B DAC device family has been awarded
the globally recognised space qualification of QML class V
by the US DLA, increasing e2v’s portfolio of QML qualified
data converters. The certification is a great achievement
for e2v as it is the highest level of qualification for a space
integrated circuit. This qualification dramatically reduces
the amount of product testing required, streamlining the
process for adoption of e2v’s world leading data converters.
e2v already has over 3,000 data converter flight models
in space and aims to further its space market share
as it continues to increase its list of QML class V data
converters. The certification of the EV12DS130B follows on
just six months after e2v was awarded its first QML class V
certification of space grade data converters, demonstrating
e2v’s commitment to growing its presence in the space
market.
The EV12DS130B operates in the microwave domain,
boasting significant benefits for software defined RF
systems in space, such as the removal of costly frequency
converters. Its unrivalled performance makes it suitable for
applications such as satellite communications, synthetic
aperture radar imaging, global navigation satellite systems
and other forms of scientific space-borne instruments.
Laurent Monge, Vice President of Semiconductors at e2v,
commented, “We understand the time and investment our
space customers dedicate to each program. Increasing
our number of QML class V certified solutions helps to
reduce space system design time by lowering the amount
76 l New-Tech Magazine Europe