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Buck / Step Down Power Supplies, Page 3
Buck: Page 1, Page 2,
Page 3, Page 4,
Page 5
Boost,
Buck, Buck-Boost,
Switchmode
Power Supplies -- Main
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Converters -- Main Page
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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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 - 4-Apr-02 Issue of
EDN High efficiency is important for the 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 by Masami
Muranaka, Maxim Integrated Products, Tokyo, Japan] |
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Cheap PWM IC makes synchronous gate driver - 02/04/99 Issue of EDN 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 has gained
vast acceptance, thanks to its relative simplicity....Page includes several designs.
Scroll to find this one.... [Design Idea by Dimitry Goder, Switch Power Inc, Campbell,
CA] |
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Configure buck converter for boost operation - 12/17/98 Issue of EDN
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....Page includes several designs.
Scroll to find this one.... [Design Idea by Mehrzad Koohian, Semtech Corp, Newbury
Park, CA] |
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Controller IC and one-shot form resonant controller - 28-Nov-02 Issue of EDN
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 controller IC (Texas Instruments,
www.... [Design Idea by C Rajan, Centre for Advanced Technology, Indore, India] |
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Designing a Multi Phase Asynchronous Buck Regulator using the LM2639 -
National Semiconductor Application Note 27 Mar2000 (app note added 7/02) |
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Double Data Rate Power Supply using the Tl5002 Voltage Tracking Regulator -
The TL5002EVM-180 synchronous buck converter provides a 12A reference design for
evaluating the performance of the TL5002 PWM control IC and the TPS2837 MOSFET driver
for Double Data Rate (DDR) memory applications. (added 3/05) |
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Dual High-Current Power Supply Kit - The National Semiconductor Power Supply
Kit is designed around the National LM2636, a synchronous buck regulator. It provides
over 28 amps of current with variable output voltages ranging from +1.3V to +3.3V.
(added 3/05) |
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Dual Monolithic Buck Regulator Provides Two 1.4A Outputs with 2-Phase Switching to
Reduce EMI - DN305 Design Notes (Linear Technology) (app note added
1/06) |
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EP48 12 V 1.44 W Non-Isolated Buck Converter - This design kit is a
non-isolated 12 V, 120 mA power supply utilizing a LNK304. This power supply is
intended as a general purpose evaluation platform for LinkSwitch-TN in a buck
converter configuration. (added 7/06) |
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Extend the input range of a low-dropout regulator - 17-Oct-02 Issue of EDN
Because of process limitations, all ICs have an input-voltage limitation. This
limitation can be cumbersome when you try to step down a high supply voltage to a
lower, regulated voltage using a dc/dc converter, such as a linear regulator. Adding a
FET to the input of a linear regulator creates a dc/dc converter with a wider
input-voltage range than the range of the regulator alone.... [Design Idea by Jeff
Falin, Texas Instruments, Dallas, TX] |
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Flyback LDO Buck Sync. Buck Reference Design - Flyback, LDO, Buck and Sync
Buck with Vin 10 to 16 V. Multiple output voltages of -24 V, -5 V, 1.5 V, 3.3 V, 5 V,
12 V and 58 V. The total output power is 15 W. (added 3/05) |
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Get buck-boost performance from a boost regulator - 11-Jul-02 Issue of EDN
The SEPIC (single-ended, primary-inductance-converter] topology is generally a good
choice for voltage regulators that must produce an on output voltage that falls in the
middle of the input-voltage range, such as a 5V output from a 2.7 to 6V input, The
topology has some disadvantages, however. The efficiency of a SEPIC circuit fares
worse than that of buck and boost regulators, and SEPIC desig.... [Design Idea by Tom
Gross, Linear Technology Corp, Milpitas, CA] |
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High Current Step-Down Controller Regulates to 0.6V Output from 3V Input -
DN322 Design Notes (Linear Technology) (app note added 1/06) |
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High Efficiency Monolithic Buck Converter [LTC1265] - DN105 Design
Notes (Linear Technology) (app note added 6/06) |
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High Power Synchronous Buck Converter Delivers Up to 50A - DN156
Design Notes (Linear Technology) (app note added 1/06) |
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High Voltage Buck Regualtors provide High Current Low Profile Power Solutions for
FireWire Peripherals - DN287 Design Notes (Linear Technology) (app
note added 6/06) |
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High Voltage Current Mode Step-Down Converter with Low Power Standby Capability -
DN383 Design Notes (Linear Technology)....[App Note] |
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High Voltage Low Noise Buck Switching Regulator [LT1777] - DN212
Design Notes (Linear Technology) (app note added 1/06) |
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Buck:
Page 1, Page 2,
Page 3, Page 4,
Page 5
Power Supplies -- Main
Page
Converters -- Main Page |
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