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Boost Controller Drives Buck Converter - 02/03/97 EDN-Design Ideas:
-By adding an external Switching Transistor, you can use a step up dc/dc Converter to
step down voltages to produce an efficient Battery Powered Power Supply, this example
Circuit can step down inputs as Low as2V to Outputs as Low as1.25V, with efficiency as
high as 80%.....(design idea added 3/05) |
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Buck Boost Regulator Suits Battery Operation - 09/04/03 EDN-Design Ideas: A
buck/boost converter can step a voltage up or down. Such a converter is appropriate
for battery-powered applications. One application derives a regulated 14.1V at 1A from
12V solar panels with 9 to 18V variation. In this type of battery application,
efficiency is an important factor; hence, this design uses an inexpensive
synchronous-rectifier-based MC33166/7 circuit.....(design idea added 1/05) |
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Buck Configuration High-Power LED Driver - Microchip Application Note Published
4-Jan-06 (app note added 6/06) |
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Buck Converter - (application / block diagram added 6/07) |
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Buck converter charger also provides system power - 05/22/97 EDN-Design Ideas:
-Switching Regulator provides charge voltage setpoint with Current regulation,
and second Switching Regulator provides5V System Power -Many systems require long-time
operation during periods of power loss. Often, a gel or wet-cell lead-acid battery is
best choice because of high capacity and relatively low cost. The battery
charges.....(design idea added 4/02) |
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Buck Converter Handles Battery Backup System - 04/24/03 EDN-Design Ideas: A
synchronous buck converter is inherently bidirectional. That is, it transfers energy
from input to output as a buck regulator when output voltage is low, but, when
output voltage is high, converter acts as a boost regulator, transferring power
from output to input. This Design Idea shows how to use this bidirectional energy
transfer.....(design idea added 12/04) |
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Buck converter uses low side PWM IC - 03/19/09 EDNDesign Ideas: A voltage-level
shifter lets you control voltages above a PWM controller's power source.....(design
idea added 08/09) |
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Buck converter works efficiently from phone line - 02/15/00 EDN-Design Ideas:
(design idea added 2/06) |
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Buck Converter-AC Model - We've already developed a SPICE model for the Buck
Converter in a voltage control loop. The controller performed brilliantly holding the
output steady under varying load conditions. However, closing the loop is fraught with
danger! Without proper insight, Vo can start ringing and oscillating out of
control...(spice design added 02/09) |
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Buck IC Boosts Battery Voltage for White LED - 04/24/03 EDN-Design Ideas:
White-light LEDs are finding ir way into many markets that incandescent bulbs once
served. Flashlights are among newer applications in which reliability,
ruggedness, and ability to control power draw of LEDs make se devices
attractive. With incandescent bulbs, power management for device is a
simple on-off switch.....(design idea added 1/05) |
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Buck or Boost: Rugged Fast 60V Synchronous Controller Does Both - DN370
Design Notes (Linear Technology) (app note added 1/06) |
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Buck Reference Design - This reference design is a buck converter that can deliver
up to 2A of continuous current at -24 V from an input range of -35 V to -75 V. By
referencing UCC3813 controller to negative input rail, N-channel
MOSFET is easily driven. This design achieves a peak efficiency greater than 95%. The
UCC3813 provides current mode control for excellent line and load transient response.
(added 3/05) |
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Buck regulator & two inductors make dual Polarity converter - 03/20/03 EDN-Design
Ideas: A common problem for power-supply designers is to create a compact,
dual-polarity step-down converter. If space and cost are not concerns, obvious
solution is a pair of dc/dc converters, one for each output. But space and cost are
almost always issues for communications, data-acquisition, and disk-drive
applications.... (added 12/04) |
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Buck regulator forms high Power inverting –5V supply - 04/01/04 EDN-Design Ideas:
Configuring a step-down switching-converter IC as an inverter yields an efficient,
high-power, -5V supply that can of deliver currents as high as 4.5A at 12V input
or 3.2A at 5V input (Figure 1). Conventional inverting power supplies do ir
switching using a p-channel MOSFET (Figure 2). That configuration works well at lower
currents,.....(design idea added 1/05) |
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Buck Regulator Generates Flexible VTT for PECL - 08/15/97 EDN-Design Ideas:
-Circuit to generate Output which can both Source and Sink Current -The positive
emitter-coupled logic (PECL)in most high-speed clock-distribution and -recovery
circuits requires a termination voltage, VTT, that imposes special requirements on
VTT supply. First, typical switching thresholds for PECL must refer to VDD.....(design
idea added (07/02) |
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Buck regulator operates Without a dedicated clock - 08/21/03 EDN-Design Ideas:
Most switching regulators rely on a dedicated clock oscillator to determine
switching frequency of operation. A dedicated oscillator circuit within power
controller usually generates clock signal. A class of hysteretic switching
regulators can actually operate at a relatively fixed frequency without a clock, even
with changing input-line and output-loading conditions.....(design idea added 1/05) |
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Buck Regulator Terminates Fast Data Buses - 07/20/95 EDN-Design Ideas: (design
idea added 3/03) |
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Buck Regulator uses Step Up Controller - 11/09/95 EDN-Design Ideas: (design idea
added 3/03) |
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Buck/Boost Reference Design - This reference design presents an alternative to
typical boost power regulator. A buck converter IC is used to generate a higher
voltage needed by white light LED power from a Ni-Cd battery. This circuit
operates by turning high switch on, connecting battery voltage across
inductor. Once sufficient energy is stored in inductor, .... (added 3/05) |
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Buck-Based LED Drivers using the HV9910 - Supertex Semiconductors (app note added
6/06) |
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Capacitor Improves Efficiency in CPU Supply - 04/04/02 EDN-Design Ideas: High
efficiency is important for dc/dc buck converters that supply high currents in
notebook PCs. This efficiency extends battery life and minimizes temperature rise. A
low-dissipation synchronous rectifier using an external MOSET provides this high
efficiency. Synchronous rectifiers require special attention, however.....(design idea
added 3/05) |
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Cheap PWM IC Makes Synchronous Gate Driver - 02/04/99 EDN-Design Ideas: A system
with a µP, memory, and peripherals usually requires several power-supply voltages.
Designers typically use local switching regulators to produce the desired voltage
rails. One of the most common topologies, the synchronous buck regulator, converts a 5
or 12V bus to some other, lower voltage. This approach.....(design idea added 6/06) |
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Configure Buck converter for boost operation - 12/17/98 EDN-Design Ideas: Buck
converters are inherently different from boost converters, because buck converters
typically use the high side of the output as the power switch’s reference. However, a
buck converter with a floating output drive section is configurable as a boost
controller (Figure 1). This circuit configures the SC1101 buck controller.....(design
idea added 2/06) |
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Controller IC & one shot form resonant Controller - 11/28/02 EDN-Design Ideas:
Resonant power supplies are popular because of high efficiency, low noise, and
compactness. You can implement a resonant buck or boost converter using a single
switch. The regulation of the output in such a converter derives from using a constant
on or off time and a variable frequency. The UC1864.....(design idea added 1/05) |
