Product category:
DC/DC Convertors
News Release from: Datel (UK) | Subject: USN Series D5 SIPs
Edited by the Electronicstalk Editorial
Team on 12 June 2001
More current from industry-standard
convertors
Datel's new USN Series D5 SIPs are nonisolated DC/DC convertors that accept a 5V input (4.5 to 5.5V input range) and deliver 1.5, 1.8, 2.5 or 3.3V outputs at either 8 or 10A.
Datel's new USN Series D5 SIPs are nonisolated DC/DC convertors that accept a 5V input (4.5 to 5.5V input range) and deliver 1.5, 1.8, 2.5 or 3.3V outputs at either 8 or 10A USNs are packaged in the industry-standard, single-inline package (SIP) measuring 51 x 13 x 10mm
This article was originally published on Electronicstalk on 10 May 2001 at 8.00am (UK)
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Ideal for true point-of-use power processing, USN D5 SIPs are designed to take onboard 5V power and convert it to virtually any lower voltage required by today's current hungry DSPs, ASICs and CPLDs.
Once onboard power (typicaly5V or 3.3V for digital systems) has been isolated from its backplane bus (typically 48V for IT equipment), additional isolation is unnecessary.
If a designer requires onboard 1.5-3.3V power, it is considerably less expensive to generate that power from the 5V source, using nonisolated techniques, than to employ additional isolated DC/DC convertors to generate it from the backplane bus.
USNs are pin compatible with similar devices from Lucent/Tyco, Artesyn Technologies and Power One.
USNs, however, deliver more current (10A versus the competition's 6A), from a smaller package (2.0in long versus.
the competition's 2.5in long), with better accuracy (+1% maximum), tighter regulation, less noise and superior temperature performance.
USNs exploit a 200kHz, fully synchronous, buck topology to achieve their electrical performance.
Their high efficiencies (to 91%) enable them to boast superior temperature performance.
If a USN SIP is operated at only 6A, for example it can reliably operate up to +65C (with 100lfm airflow).
Competing devices require more airflow and begin to derate at significantly lower temperatures.
Synchronous rectification also enables stable no-load operation - an important consideration for power-conscious applications that have portions of circuits going to "sleep mode".
The fully functional USNs feature input undervoltage shutdown, output overcurrent detection (at 120% of rated load), continuous short-circuit protection, a wide range output-voltage trim function, a remote on/off control pin, and an optional sense pin.
For those who require it, a "power-good" function can be added, and for those wanting 100% compatibility with Lucent/Tyco's NH020 Series, Datel can invert the polarity of the USN's industry-standard on/off control function.
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