描述 Description

DESCRIPTION
The DHC2800S series of DC-DC converters provides the ruggedness, reliability, and features required to meet the advanced design challenges of today’s hi-rel market. This is accomplished while retaining a power density of 17 W/in3 and 425 mW/gram of power/package performance. The use of advanced substrate and reflow soldering techniques during construction results in a rugged, cost-effective, and completely solderable package.
DHC2800S hybrid converter series utilizes all ceramic capacitors and surface mount magnetics to provide reliable operation at all operating temperatures while surviving very high G forces.
DHC2800S standard features include output fault monitoring and/or turn on voltage point programming via the shutdown pin. All three functions may be implemented simultaneously with a minimum of external components. An output voltage adjustment/load compensation pin is also standard.
Fault tolerant design protects these converters from most external circuit faults. The output and output adjust pins will withstand +35 V while the shutdown pin will withstand +50 V protecting the converters from a variety of system or board faults i.e. solder bridges etc. Unique load fault protection circuitry allows this converter to pull up loads having difficult static load line characteristics and allows short term load excursions significantly beyond ratings in most applications.
A transformer isolated forward converter topology operating at a switching frequency of 400 kHZ allows operation over a wide input voltage range. Internal filtering of both input and output eliminates the need for external capacitors in many applications.HI-REL DESIGN
? WAVE SOLDERABLE PACKAGE
? ALL CERAMIC CAPACITORS
? SURFACE MOUNT MAGNETICS
? WITHSTANDS 5000GFEATURES — SINGLE OUTPUT
? REPLACES APEX DHC2803S & DHC2805S
? NO DERATING — -55°C to +125°C
? WIDE SUPPLY RANGE — 12V to 50V
? HIGH ISOLATION — 500V
? HIGH POWER DENSITY — 17W/IN3
? OUTPUT VOLTAGE ADJUSTMENT — STANDARD
? REMOTE SHUTDOWN
? OPERATES TO 11VIN AT 5W
? AVAILABLE WITH 3.3V OR 5V OUTPUTS
? SEE DAC2800S SERIES FOR 12V AND 15V VERSIONS