new family of Stingrayô isolated dc-dc regulated converter board-mounted power
modules from Lineage Power
provide energy efficiency with no thermal derating, at less than half the cost
of previous generation regulated converter products. The modules are focused on
the next generation, mobile Internet infrastructure, and the need for rugged,
board-mounted power solutions. The goal is to keep 3G and 4G/LTE wireless
communications flowing in the most extreme environmental conditions without the
use of cooling fans.
The Stingray series is designed for use
within 3G and 4G/LTE cell sites and wireless backhaul networks, triple- and
quad-play IP/DSL outdoor cabinets, Ethernet IP LANs and Power-over-Ethernet
(PoE) networks, and switching, routing, computing and storage devices.
The dc-dc power converters adhere to DOSA
specification standards for eighth brick format. The Stingray series is backwards-compatible
and fulfills original equipment manufacturer (OEM) needs for reduced size, cost
and energy efficiency.
"Within the power converter market, the sweet
spot has been migrating toward the DOSA
, says Allen Rozman, director of product management, Board Mounted
Power, for Lineage Power. "DOSA is tasked with establishing standard mechanical
footprints for a variety of power converters to encourage multiple sourcing for
a given form factor and a wider variety of choices for customers without having
to do modifications in their designs."
The Stingray series is compliant with the existing
DOSA specification for the eighth-brick size, and Rozman says the product will
eventually migrate into the sixteenth-brick size, as well. By focusing the design
on value-oriented customers, they were able to achieve unit costs starting at
$14 in OEM quantities of 1,000 pieces.
To optimize price and performance, Rozman
says they instituted a "design for supply chain" optimization program
throughout Lineage Power to use common circuits and common components from
multiple suppliers across a wide variety of product portfolio designs. †
"If you're an OEM power design engineer developing
a new product, there is still an initial decision on taking a discrete approach
or a module approach to power," says Trent Waterhouse, vice president of
marketing for Lineage Power. "What we are seeing is the cost premium
disappearing for the module approach as our next-generation board-mounted power
technology becomes more cost-effective."
Waterhouse says that, from a reliability
perspective Lineage Power products are designed for decades of use with MTBF
ratings measured in billions of hours. And with the general need to accelerate
product development cycles, OEM customers can reduce risks by leveraging a
proven power design that avoids board scrap or re-spin issues associated with discrete
The first converter module in the Stingray
family, the ESTW015A0F, provides 50Wof output power with 36-75 Vin
and 3.3 Vout
in an eighth-brick size. Energy efficiency of 91
percent in a low voltage output is complemented with thermal derating that insures
no heat sinking and full power in the most demanding of environmental
applications with operation up to 85C (185F).