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Boost / Step Up Power Supplies, Page 8
Boost, Buck,
Buck-Boost,
Switchmode
Power Supplies -- Main Page
Converters -- Main Page
Boost: Page 1, Page
2, Page 3,
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Page 8
Last Updated on:
Monday, October 03, 2011 06:07 PM |
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Links to electronic circuits, electronic schematics, designs for engineers,
hobbyists, students & inventors:
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Single transistor provides short-circuit protection - 16-Oct-03
Issue of EDN In certain dc/dc-converter applications, on-chip,
cycle-by-cycle current limit may be insufficient protection to prevent a
failure during a short circuit. A nonsynchronous boost converter provides a
... [Design Idea by Keith Szolusha, Linear Technology Corp, Milpitas, CA] |
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Step Up/Step Down
Converter Takes 2 to 16V Inputs - 07/16/98 EDN-Design Ideas....The
circuit in Figure 1 is a low-cost step-up/step-down dc/dc converter.
By definition, its input can range above and below the regulated voltage.
The circuit includes a simple switchmode boost converter (IC1] that contains
a comparator normally...This file contains several circuits, scoll to find
this one.... [Design Idea by Lucian Brodogna and Luca Vasalli. Maximin
Integrated Products, Milan Italy] |
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Step-Down Conversion Concept for a PWM-Mode Boost Converter - TI
Application Note (added 2/06) |
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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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Step-up supply charges battery while serving load - 06/08/95 EDN-Design
Ideas....The circuit in Fig 1 supports portable applications in which a microprocessor
controls battery charging. Step-up switching regulator IC1 boosts VIN (5V]to supply a
combination of charging and load current. (Note that the 5V source must have
short-circuit protection.]IC2 is a high-side current-sense amplifier that monitors
charging current.... [Design Idea by Dana Davis, Maxim Integrated Products, Sunnyvale,
CA] |
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Supercapacitor boosts current from small battery - 2-Sep-04 Issue of EDN
Some battery-powered devices require large amounts of current in a short period of
time but spend most of the time in sleep (power-down] mode. The momentary large-load
current demands large batteries to meet the time requirement, even though the average
current consumption is low. For instance, a system operates for 1.... [Design Idea by
Yongping Xia, Navcom Technology, Torrance, CA] |
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Supply derives 5 and 3.3V from USB port - 20-Dec-01 Issue of EDN The
circuit in Figure 1 derives its power from a USB port and produces 5 and 3.3V supply
rails for portable devices, such as digital cameras, MP3 players, and PDAs. The
circuit allows the port to maintain communications while, for example, charging a
lithium-ion battery. IC2 boosts the battery voltage, VBATT, to 5V, and IC3
buck-regulates that 5V output down to 3.... [Design Idea by Chad Olson, Maxim
Integrated Products, Sunnyvale, CA] |
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Tapped inductor, boost regulator deliver high voltage - 20-Jul-06 Issue of
EDN Obtain 100V dc from a 3V source.... [Design Idea by David Ng and Adam Huff,
Linear Technology Corp, Milpitas, CA; Edited by Brad Thompson and Fran Granville] |
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The Use of Zetex E-Line Transistors in DC-DC Converters: An Introduction to the E-Line
Package & Typical Applications - Zetec Semiconductors Applications
Notes A basic guide to the DC-DC Converter requirement and concept, including an
introduction to the Zetex enhanced TO92 the E-Line package, and some suggested
applications where these components offer advantages. (app note added 7/06)
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Three input supply powers 3.3V Portables - 04/13/95 EDN-Design Ideas....The
single-ended primary-inductance converter in Fig 1 accepts input voltages ranging from
3 to more than 6V and produces a regulated 3.3V, 200-mA output. The converter accepts
an input voltage from three sources a 5V dc wall cube, a three-cell AA battery,
and a lithium backup battery.... EDN is migrating links. This link is not verified.
Google the "title" EDN for new link. |
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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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Three-Band Equalizer - Using a single op-amp this easy to make equalizer
offers three ranges, low frequency, mid frequency, and high. With component values
shown there is approximately +/-20dB of boost or cut at frequencies of 50Hz, 1kHz and
10kHz. Supply voltage may be anything from 6 to 30 Volts. Maximum boost 20dB is only
realized with maximum supply voltage. (added 4/05) |
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Tiny & Efficient Boost Converter Generates 5V at 3A from 3.3V Bus - DN280
Design Notes (Linear Technology) (app note added 1/06) |
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Tiny Highly Flexible Dual Boost/Inverter Tracks Supplies - DN357
Design Notes (Linear Technology) (app note added 1/06) |
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Tiny microcontroller hosts dual dc/dc boost converters - 15-May-08 Issue of
EDN An Atmel AVR microcontroller can serve as the PWM controller for two dc/dc
converters that provide high voltages from a two-cell supply.... [Design Idea by
Dhananjay V Gadre, Netaji Subhas Institute of Technology, New Delhi, India] |
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TPS6102x Boost Converter Down Conversion Mode - TI Application Note
(added 2/06) |
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TPS61042 White Light LED Driver Boost Converter Rev. A - TI Application Note
(added 6/06) |
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UCC3819 250-W Pfc Boost Follower Preregulator Design - This is an
application note that describes a reference design. This paper reviews the
benefits of a boost follower topology and the design of a 250-W PFC boost follower
preregulator. (added 3/05) |
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Unique IC Buffer Enhances Op Amp Designs Tames Fast Amplifiers - AN16 Linear
TechnologyThis note describes some of the unique IC design techniques incorporated
into a fast, monolithic power buffer, the LT1010. Also, some application ideas are
described such as capacitive load driving, boosting fast op amp output current and
power supply circuits. |
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Universal PSU - Circuit designed by Volker Jeschkeit. A Universal
Power supply based on the L200 regulator, which includes an outboard pass transistor
to boost output currents up to 4 amps. (added 7/06) |
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Universal PWM Driver - PWM drivers are used in analysing, testing,
installing and powering all kinds of electronic and electrical devices. We have
published a few designs in Elektor over the years: here we present a ‘de luxe’
version….must register on this site.... [Published in Elecktor July/August 2010] |
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Use a microcontroller to design a boost converter - 4-Mar-04 Issue of EDN
Boost converters, like other switchers, have traditionally received their control
signals from a dedicated circuit. However, a recent trend is to integrate simple
switching-power-supply building blocks into generic devices, such as microcontrollers.
An excellent example of this concept is a microcontroller that combines digital and
analog circuitry and makes it easier to build simple power supp.... [Design Idea by
Ross Fosler, Microchip Technology, Chandler, AZ] |
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Use of Zetex E-Line Transistors in DC-DC Converters: an Introduction to the E-Line
Package & Typical Applications - Zetec Semiconductors Applications
Notes A basic guide to the DC-DC Converter requirement and concept, including an
introduction to the Zetex enhanced TO92 the E-Line package, and some suggested
applications where these components offer advantages. (app note added 7/06)
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Using Smart Charge Sharing to Reduce Power & Boost Column Driver Performance -
National Semiconductor Application Note (app note added 7/06) |
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Voltage Booster (Very Simple) - Uses a LT1372 and only a Few
partsBut can handle 1. 5 amps Input Current. Input as low as 3 VoltsOutput may
be as high as 35 Volts....(design added 12/08) |
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