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Selecting Inductors for Buck Converters - National Semiconductor Application
Note (app note added 7/06) |
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Shoot-through' in Synchronous Buck Converters/ AN-6003 - Fairchild
Application Notes / (app note added 6/06) |
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Simple Sychronous Buck Regulator: MCP1612 - Microchip Application Note
Published 14-Jan-05 (app note added 2/06) |
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Solar Step Down Regulator - This is an experimental circuit which rapidly
"chops" a steady DC input voltage to produce a lower output voltage. Regulation is a
function of the chopping - it is caused by the output transistor switching on and off
around the target voltage, which when smoothed provides a constant DC output....
[Rowan from Melbourne, Austrailia] |
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[_OLD-ads-dont_upload/OLD I-ADS from web/ad-djandassoc.htm] |
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Stepdown converter uses a ceramic output capacitor - 06/07/01 EDN-Design
Ideas EDN is migrating links. This link is not verified. Search the
"title" EDN for new link. |
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Sychronous Buck Regulator: MCP1612 - Microchip Application Note Published
14-Jan-05 (app note added 2/06) |
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Sync. Buck with Integrated FET Forward Dual Sync. Buck Reference Design -
Sync. Buck with Integrated FET, Forward, Dual Sync. Buck with Vin of 48. Vout of 15 V,
3.3 V, 1.8 V, 1.5 V. The output power is 47 W. (added 6/06) |
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Synchronous buck circuit produces negative voltage - 6-Mar-03 Issue of EDN
Many electronic systems require both positive and negative voltages to operate
properly. Generating an efficient, low-voltage positive output from a higher voltage
input typically entails the use of a synchronous buck regulator. But when generating a
negative output voltage from a positive input voltage, you'd typically use a flyback
topology, especially at higher output currents.... [Design Idea by John Betten, Texas
Instruments, Dallas, TX] |
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Synchronous Buck MOSFET loss calculations with Excel model/ AN-6005 -
Fairchild Application Notes / (app note added 6/06) |
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Synchronous Buck Reference Design - This reference design is a 5Vdc input to
1.65V @ 1A output synchronous buck converter. The controller is the TPS40003 operating
at 600KHz. The controller features Predictive Gate Drive, which minimizes the bottom
FET body diode conduction time. This provides the benefit of increased
efficiency when compared to a standard gate drive method....(added 3/05) |
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Synchronous flyback circuit provides high-efficiency conversion - 22-Jul-04
Issue of EDN Buck regulators are usually the first choice when you design
nonisolated step-down regulators unless the ratio of VIN to VOUT is greater than 10,
the input voltage is high, or both. Low duty cycle can be problematic for FET drivers
and cause current-mode control loops to lose control. Efficiency can fall dramatically
to 60 to 70% at low VOUT and current of only a few amps.... [Design Idea by Wayne
Rewinkel, National Semiconductor, Phoenix, AZ] |
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Synchronous OCM Buck-Boost - This reference design is synchronous buck-boost
converter that can deliver up to 3.8 A of continuous current at -5 V from a 5 V input.
This topology uses a synchronous buck controller (TPS5103) referenced to the negative
output rail. The synchronous MOSFETs allow this design to achieve a peak efficiency of
88%(added 3/05) |
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ThinSOT Micropower Buck Regulator has Low Output Ripple - DN373 Design
Notes (Linear Technology)....[App Note] |
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Three parts provide tenfold increase in switcher current - 22-Aug-02 Issue
of EDN Industrial-control circuits often derive their power from widely varying
sources that can exceed the 40V maximum rating of popular switching ICs. This
Design Idea presents a simple, flexible, and inexpensive buck switcher that converts
an input voltage as high as 60V to 5V at several amps. The circuit is unique in that
it boosts current with almost no compromise in performance, size, or cost.... [Design
Idea by Wayne Rewinkel, National Semiconductor, Sunnyvale, CA] |
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Tiny Buck Regulator Accepts Inputs from 3.6V to 25V & Eliminates Heat Sink -
DN268 Design Notes (Linear Technology) (app note added 6/06) |
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Tiny Step-Up/Step-Down Power Supply Delivers 3.3V at 1.3A in Battery-Powered Devices
- DN271 Design Notes (Linear Technology) (app note added 1/06)
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Tiny Versatile Buck Regulators Operate from 3.6V to 36V Input - DN367
Design Notes (Linear Technology)....[App Note] |
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TSM108 Evaluatin Board 12V to 6V DC/DC Converter - The TSM108 is a step down
controller that features constant voltage and constant current regulation.The
Evaluation Board was designed to allow different converter configurations. Several
options for power semiconductor footprints are available on the PCB in order to make
it adaptable to a wide range of converter output power. In a first step,(app note
added 3/05) |
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Two AA cells power
step-down regulator - 01/07/99 Issue of EDN DC/DC conversion is
particularly challenging when both the input and output voltages are low. Step-up ICs
that operate with inputs lower than 1V are available, but step-down ICs that accept
input voltages....Page includes several designs. Scroll to find this one....
[Design Idea by Len Sherman, Maxim Integrated Products, Sunnyvale, CA] |
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Virtual zener circuit simplifies High-Voltage interface - 20-Mar-03 Issue of
EDN This design for a photonic switch needsthan approximately 70V at the cathode of a
duo-lateral optical position-sensing device. This voltage gets speedy response
at longer wavelengths, such as 980 nm. The circuit uses fast transimpedance amps,
"floated" at 70V. Two "virtual-zener" circuits step down the high-voltage signals for
subsequent processing in a ground-referred differential-amplif.... [Design Idea by
Philip Lane, Transparent Networks Inc, Bellevue, WA] |
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Wide-Input, High Voltage Buck Converter - National Semiconductor Application
Note (app note added 2/06) |
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Wide-range regulator delivers 12V, 3A output from 16 to 100V source -
23-Jun-05 Issue of EDN Buck regulator tackles high input voltages.... [Design
Idea by Wayne Rewinkel, National Semiconductor, Schaumburg, IL; Edited by Brad
Thompson and Fran Granville] |
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