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new products
select from continuous operation, pulse-skipping and low
ripple Burst Mode operation during light loads. Its current
mode architecture provides easy loop compensation, fast
transient response and excellent line regulation. Output
current sensing is accomplished by measuring the voltage
drop across the output inductor (DCR) for the highest
efficiency or by using an optional sense resistor. Current
foldback limits MOSFET heat dissipation during overload
conditions. Additional features include up to 98% duty cycle
(useful when powered from a battery during discharge),
an internal LDO that powers the gate drive from the input
voltage or EXTVCC and a power good output signal.
The LTC7800 is available in a 20-lead 3mm x 4mm QFN
thermally enhanced package which is pin compatible to
the LTC3891. Two operating junction temperature grades
are available with extended and industrial versions from
–40 to 125°C and a high temp automotive grade version
from –40°C to 150°C. The 1,000-piece price starts at $3.47
each.
Five new MIL-COTS parts help simplify
designs and optimize SWaP-C attributes
The VIA DCM family are ruggedized modular DC-DC
converters in a thermally adept, low profile (9.3 mm) VIA
package, with wide input voltage range specifications and
isolated, regulated high efficiency outputs. This new DC-
DC converter family, features enhanced functionality and
performance, including EMI filtering, transient protection,
inrush current limiting, as well as a secondary-referenced
control interface for trim, enable and remote-sensing.
3x More Power and Lower Profile
Vicor’s new solutions are approximately 2.5X more
power dense by volume and approximately 3X more
power dense by weight than the closest competitor.
Designers can expect better thermal performance and
a more comprehensive range of transient and EMI spec
compliance. By providing brick-like modularity and
ease-of-use in a smaller form factor, the new VIA DCM
and MFM modules enable system designers to develop
extremely dense, low profile, high performance products
fast. The new solutions help you get to market faster
by eliminating many of the uncertainties and compliance
problems traditionally associated with military application
power design.
New MIL-COTS Parts
Four new MIL-COTS (M-Grade) versions are available
now, providing operation down to -55°C, in the 28V (16 –
50 VDC input voltage range) 3414 VIA DCM family with
nominal output voltages of 5V, 12V, 24V and 28V and up
to 320 Watts of output power.
Complementing these MIL-COTS VIA DCMs is a new
MFM 28V filter module (MFM filter) This extremely dense,
low profile filter provides front-end transient protection
and EMI filtering when used with any Vicor M-Grade
28V 3414 VIA DCM module. This combination enables
power engineers to rapidly meet conducted emissions
and conducted susceptibility requirements per MIL-STD-
461E/F and input transients per MIL-STD-704A/E/F and
MIL-STD-1275D/E. The MFM 28V filter module is housed
in a 1714 VIA package (size: 1.76” x 1.40” x 0.36” / 44.6
mm x 35.5 mm x 9.3 mm), accepts an input voltage of
16 – 50 VDC and can deliver up to 350 Watts of power.
Microchip extends eXtreme Low Power
PIC32MM microcontroller family
Microchip announces new PIC32MM “GPM”
microcontrollers (MCUs). These eXtreme Low Power
(XLP) MCUs feature large memory in small packages
to provide ample battery life for space-constrained
applications. With the inclusion of several connectivity
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