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Topic: DC to DC converter


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In the News (Thu 24 Dec 09)

  
 DC to DC converter: Just the facts...
DC to DC converters used to be somewhat large for use in devices such as cell phones; however, with the advent of hybrid circuits, they are now available as single package, even surface mount (additional info and facts about surface mount), devices.
Switching DC to DC converters are available in a wide variety of input and output voltages.
Convert DC to AC (An electric current that reverses direction sinusoidally), for example an oscillator (Generator that produces sonic oscillations or alternating current) or chopper (Informal terms for a human `tooth').
www.absoluteastronomy.com /encyclopedia/d/dc/dc_to_dc_converter2.htm   (422 words)

  
 DC-DC Converter Basics
A DC-to-DC converter is a device that accepts a DC input voltage and produces a DC output voltage.
The voltage ratios achievable by the DC-DC converters is summarised in Fig.
The concept behind the foward converter is that of the ideal transformer converting the input AC voltage to an isolated secondary output voltage.
www.powerdesigners.com /InfoWeb/design_center/articles/DC-DC/converter.shtm   (1276 words)

  
 IEEC - DC/DC Converter Packaging
The DC/DC converter market is also driving towards higher power densities at lower cost while average power output declines with smaller modules located closer to the actual driven module or device.
The growth in unit consumption and increasing power density of modular DC/DC converters has resulted in the proliferation of use of ceramic hybrid, direct bond copper, and insulated metal substrates bonded to metal plates which form the base of the module.
Vicor pioneered the development of high frequency modular converters in the early 1980's and is today a leading global merchant supplier with an installed base of over 3 million units worldwide.
www.ieec.binghamton.edu /ieec/teardown/dcdc_converter_packaging.htm   (1214 words)

  
 InsightCentral.net - Encyclopedia - Honda Insight DC-DC Converter
To ensure proper cooling of the DC-DC converter, it is mounted to a finned aluminum heat sink fitted inside a magnesium housing.
The PGM-FI ECM controls the output of the DC-DC converter according to power consumption of the 12V electrical system.
The DC-DC converter is a high voltage component, and produces substantial heat during operation.
www.insightcentral.net /encyclopedia/endcconverter.html   (293 words)

  
 High-Power, High-Voltage, Bidirectional DC-DC Converter
For example, this would occur when a lower voltage battery pack is supplying power to a high voltage bus through the dc-dc converter ("When providing power to the higher voltage terminals, the converter must be able to source a continuous current of 400Adc at 750Vdc, corresponding to a 300kW output").
The converter does not have to be ruggedized to meet environmental requirements at this time, but it must be reasonable to expect it to be capable of functioning in a combat vehicle.
There are a number of possibilities, for example: if WEG is used, the power converter cooling system may be directly connected to the main vehicle system and radiator, or, if oil cooled, a heat exchanger may be used, or a separate radiator.
www.dtic.mil /matris/sbir/sbir043/sbir276.html   (806 words)

  
 DC-DC Converter - Product Information
The environmentally sealed converter reduces truck battery volts to a 12 V output to supply power for vehicle lighting and accessories, including head lights, warning lights, blowers, windshield wipers and horns.
Thermal protection within the converter will cause the converter to operate at a reduced output in cases where it sees excessive loads, such as a continuous current draw above 16 amps, until the load is reduced
Converter is normally energized when the key switch is closed, and ceases operation when the key switch is open
www.geindustrial.com /cwc/products?pnlid=4&id=dc-dccon   (137 words)

  
 Paralleling DC/DC Converter Outputs
The converters produce 24 Watts output, but only 22.7 Watts is delivered to the load with a 5.6% loss in efficiency and a 75.4% overall efficiency.
Two ways of supplying this higher voltage are to use a small converter of some type which adds cost and complexity, or power the op amp from the converter input voltage if it is high enough.
If the converter input voltage is greater than the op amp rating you must limit op amp voltage with a resistor and zener diode.
www.relinc.com /PROD/pp_par.htm   (902 words)

  
 DC-DC converter - Patent 4922396
A DC-DC converter constructed in accordance with the invention, which operates in single-ended mode, includes a secondary transformer winding connected to the bridge rectifier and which is also utilized for demagnetization of the transformer, as a result of which the voltage pulse produced upon demagnetization is also utilized for charging of the charging capacitor.
A DC-DC converter in accordance with claim 1, wherein the transformation ratio between said primary and secondary windings of said transformer is in the range of approximately 14 to 16, and is preferably approximately 15.
A DC-DC converter in accordance with claim 7, wherein said capacitor means comprises a winding-layer capacitance between said second secondary winding and at least one of said primary winding and ground, and wherein said second secondary winding includes two terminals, one of said terminals being connected to said first secondary winding.
www.freepatentsonline.com /4922396.html   (3586 words)

  
 ELEC4400 project 1: DC-DC converter
You are to design a switch-mode dc-dc converter which can supply 5V at 200mA (1W) maximum for powering automotive electronic equipment (an example might be a satellite navigation system with DSP, displays and receiver circuitry).
Converter output voltage regulation = 0.2V (ideally 4.9-5.1V), for 40-200mA load and 33-52Vdc in.
Add a controller chip or a control circuit of your own design to regulate the output voltage of the converter.
www.itee.uq.edu.au /~elec4400/projects/dcdc42-5V.html   (900 words)

  
 Fully Integrated DC/DC Converter - 7/1/2005 - ECN
Vishay Intertechnology, Inc. has announced its fully integrated DC/DD buck converter that is said to deliver power density of more than 570W per cubic inch in a 20-port,surface-mount BGA package with an area of 0.58″ x 0.48″ and a low maximum height profile of 0.126″.
It also can be used to stabilize, filter, reduce ripple and shift DC voltage levels in virtually any end product including amplifiers, VoIP, platforms, routers, professional digital cameras, portable computers and battery back-up systems.
This converter is designed to adjust and stabilize the input power in pint of load (POL) applications to a variety of semiconductor devices such as FPGAs, microprocessors, DSPs and DDR-SDRAMs.
www.ecnmag.com /article/CA623656.html?nid=2432   (376 words)

  
 [murata] DC-DC Converter
Performance pertaining to the DC-DC converter's output voltage fluctuation during rapid fluctuation of the load current, in terms of DC-DC converter connection load.
It is desirable for the output voltage of the DC-DC converter to be maintained at a set value even when the load current rapidly fluctuates.
Indicates the capacitor connected in parallel to the DC-DC converter output.
www.murata.com /ninfo/nr0571e.html   (836 words)

  
 Dc - Information, Maps, Facts, What to do, Links, and much more.
Washington, DC, officially the District of Columbia (also known as DC; Washington; and, historically, the Federal City) is the capital city and administrative district of the United States of America.
The official bird of Washington DC is the wood thrush.
Aerial photo (looking NW) of the Washington Monument and the White House in Washington, DC.Washington, DC is the most common way to refer to the District throughout the rest of the United States and the world.
www.forwardingsite.com /places/dc.html   (503 words)

  
 Intelligent dc-dc Converter Technology
The analog signal isolation board isolates and filters the dc-dc converter output voltage signal, the analog-to-digital converter board converts the analog signal to a digital signal, and the digital-signal processor board runs the data through the nonlinear control algorithms.
The NASA Glenn Research Center and the Cleveland State University have developed a digitally controlled dc-dc converter (see the photograph) to research the benefits of flexible, digital control on power electronics and systems.
The standalone digital controller is made of four circuit boards packaged in one assembly: a digital-signal processor board, a complex programmable logic device board, an analog-to-digital converter board, and an analog signal isolation board.
www.grc.nasa.gov /WWW/RT2001/5000/5450button.html   (291 words)

  
 LearnThis.Info Encyclopedia articles beginning with 'Dc'
D > Dc Listed below are all articles that begin with Dc.
encyclopedia.learnthis.info /d/dc/index.html   (26 words)

  
 NEPP - DC DC Converter
The alternative to buying hybrid DC-to-DC converters and adding on discrete circuitry at the board level or to building the whole system in-house is to treat the DC-to-DC converter procurement in the same way as NASA would treat a subsystem through a subcontract.
The input voltage of DC-to-DC converters changes with time for various reasons, including transitions between light and dark periods in the orbit and changes in the bus load conditions.
Market conditions and business decisions made by the hybrid DC-to-DC converter suppliers have led to NASA projects buying hybrid converters from companies who are building them both for the commercial sector as well as for the high reliability market.
nepp.nasa.gov /index_nasa.cfm/1003   (2690 words)

  
 Wide range of DC to DC Converters, this page Dual output (12VDC to +135VDC, -35VDC)
This DC to DC converter consists of a hybrid of surface mount and through-hole technology.
Dual Output DC to DC Converter (12VDC to +135VDC, -35VDC
Custom design and manufacture of state-of-the-art battery chargers DC to DC Converters, Battery Backups, and power supplies for OEMs in a hurry!
www.powerstream.com /Product6.htm   (167 words)

  
 Advanced Monolithic Systems - Dc/Dc Converters
The device consists of an internal temperature compensated reference, a comparator, a controlled duty cycle oscillator with an active current limit circuit, a driver, a high current output switch, a thermal protection circuit and a converter enable input.
is a CMOS charge pump converter that provides an inverted doubled output from a single positive supply.
The device consists of an internal temperature compensated reference, a comparator, a controlled duty cycle oscillator with an active current limit circuit, a driver and a high current output switch.
www.advanced-monolithic.com /products/dcdccon.html   (489 words)

  
 +30V DC-DC converter
I introduce the compact DC-DC converter in this page.
I attempted to examine the characteristic of this converter.
Because it may become the reference when you use the similar circuit, I introduce in the contents of the converter.
www.interq.or.jp /japan/se-inoue/e_ckt28.htm   (95 words)

  
 !dc to dc converter for ATX Power Supply!
Our DC-DC converter will fit into almost any chassis that are made for indutrial DC input power format.
The DC-to-DC converter is made of dual transformers heavy duty design.
!dc to dc converter for ATX Power Supply!
www.amtrade.com /pc_power/dc_to_dc_power_supplies.htm   (176 words)

  
 DC/DC Converter Heat sinks
Radian's DC/DC Converter Heatsinks are optimized to effectively cool and enhance converter reliability in a diverse range of environments.
Available in a variety of size, height and pin shape combinations, these off-the-shelf heatsinks are cost-effective, high efficiency thermal solutions for a wide selection of dc/dc power modules.
Radian's Standard DC products include a black anodized aluminum heatsink, with optional mounting kits and non-adhesive graphite tape available.
www.radianheatsinks.com /standard/dc.html   (145 words)

  
 Ericsson DC-DC converter
At 91.5% at half load and 91% at full load, the converters are efficient and thus offer a longer system lifetime and reduced cost of energy consumption, reducing the total cost of ownership.
The converter uses an industry-standard half-brick design with widely used pin-out configuration for simple integration into existing amplifier designs and to provide secure sourcing.
The fully featured converters include output overvoltage, input undervoltage, over-temperature, and output short circuit protection, together with soft-start, remote sense, remote control and output voltage adjust functions.
rfdesign.com /products/DC-DC-converter/index.html   (295 words)

  
 DC-DC converter military satellites
EPC is a generic name for a multiple output DC-DC converter that provides the power to a TWTA or an SSPA from a satellite power bus.
Both the forward and flyback converters are the topology of choice, particularly for prompt dose (dose rate) environments.
Higher efficiency means less wasted power, which equates to smaller power converters upstream, smaller solar panels, and less fuel on-board the spacecraft for the same design life.
rfdesign.com /mag/radio_military_satellites_pose   (3010 words)

  
 DC/DC Converters
The DC to DC converter is usually set to provide a solid 14 volt output
The most common DC/DC converters used in conversions are made by Todd, Sevcon, Curtis, and Vicor.
This is an electronic power supply that takes high voltage DC power from the car's traction battery pack, and provides an isolated 12 volt output to power standard accessories.
www.austinev.org /evalbum/dcdc.html   (264 words)

  
 Yuan Dean Scientific (Taiwan) - DC/DC Converters,Pulse Transformers,Flters,Delay Lines,Transformer,Inductors,Adapters,Lan Filter.
inductors, converters (dc to dc), delay line, l.
Main Products: inductors, converters (dc to dc), delay line, l.
Yuan Dean Scientific Co., Ltd. Home : Products : Description: allproducts.com - Yuan Dean Scientific Manufacturer - coils choke, dc-dc converter, delay line, lan filter, lan filter, pules transformer products for wholesalers, importers, volume buyers.
www.allproducts.com /ee/yds/showroom1.html   (82 words)

  
 DC/DC Converter - 5/1/2001 - ECN
Powerex has introduced a DC/DC converter (M57184N-715), capable of accepting inputs between 220 V DC and 360 V DC, and providing 200 ma regulated +5 V and 350 ma, +15 V DC output.
These intelligent power modules are designed to use bootstrap techniques to develop the required floating supplies for the high side gate drive from a single 15 V DC supply.
It can also be used to derive power for IGBT gate drive directly from the DC link.
www.ecnmag.com /article/CA82544.html   (250 words)

  
 dc,dc converter details from Laptops for Less.com
This is a simply done by setting the switch to the correct DC voltage determined above.
The user must identify the DC (Direct Current) voltage their device uses.
The last step is setting the correct voltage on the output of the DC/DC Adapter.
www.laptopsforless.com /dcdcdetails.htm   (300 words)

  
 World DC-DC Converter Markets
Power Inverters: DC-DC converter is a device that provides a rated DC output voltage from a given DC input voltage.
Majority of the converters are designed using semiconductor switching components that have gone through a strong phase of design development, thereby improving the capacity, efficiency, and performance.
As low-power POL converters and bus converters are deployed extensively in the IBA systems, this sector is expected to benefit immensely.
www.frost.com /prod/servlet/report-brochure.pag?id=A797-01-00-00-00   (865 words)

  
 DC/DC Converter - MP3Car.com Forums
I just bought a cheap dc/dc converter which you put in the cigarette lighter.
Um....no. Get an inverter, or a dedicated DC laptop power supply.
Warning: This unit is not stabilized its maximum rating is 800mA and if less current is drawn there is a corresponding voltage rise.
www.mp3car.com /vbulletin/showthread.php?t=33688   (249 words)

  
 INTERPOINT DC-DC Converter
Recent data from Ball Aerospace [1] and confirmed though GSFC testing indicates a potential radiation problem with Interpoint DC-DC converters that utilize Hamamatsu or ISOLINK optocouplers in their designs.
- Single events were also noted by Ball during their proton tests on the MHF+ 12V DC-DC converter, but NOT in the 15V version of this device.
Preliminary: INTERPOINT DC-DC Converter Warning - August 22, 1997
radhome.gsfc.nasa.gov /radhome/papers/Intdccon.html   (759 words)

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