Get Buck/Boost Performance from a Boost regulator:  07/11/02 EDN Design Ideas  /  (added 1/05)  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......

Industry’s First 4-Switch Buck/Boost Controller Achieves Highest Efficiency using a Single Inductor:  DN369 -  Design Notes (Linear Technology)  (app note added 1/06)

LDO Buck/Boost 2 Sync Buck Sync Boost Reference Design:  LDO, Buck/Boost, 2 Sync. Buck, Sync. Boost with Vin 2.7-4.2 V LiION or 4.5-6.5 V adapter. Multiple output voltages of 1.5 V, 2.5 V, 3.3 V and 8 V. The total output power is 5.5 W. (added 3/05)

LTC1626: Step-Down Converter Operates from Single Li-ION Cell:  DN196 -  Design Notes (Linear Technology) (app note added 1/06)

Maximizing Start up Loads with the LM3352 Regulated Buck/Boost Switched Capacitor Converter:  National Semiconductor Application Note 27 Mar2000 (app note added 7/02)

Micropower Buck/Boost Circuits Part 1: Converting Three Cells to 3.3V*:  DN109 -  Design Notes (Linear Technology) (app note added 1/06)

Micropower Buck/Boost Circuits Part 2: Converting Four Cells to 5V*:  DN110 -  Design Notes (Linear Technology) (app note added 2/06)

No Design Switiching Regulator 5V Buck/Boost (Positive to Negative) Regulator:  DN49 -  Design Notes (Linear Technology) (app note added 1/06)

Positive to Negative Buck/Boost Converter using LM267X SIMPLE SWITCHER® Regulators:  National Semiconductor Application Note 27 Mar2000 (app note added 7/02)

Single Inductor Tiny Buck/Boost Converter Provides 95% Efficiency in Lithium-Ion to 3.3V Applications:  DN275 -  Design Notes (Linear Technology) (app note added 1/06)

Step Up/Step Down Current Source Charges Batteries:  06/06/96 EDN Design Ideas  / (added 11/05)  For battery charging, the highly efficient step-down (buck) configuration is usually the topology of choice. However, a different approach is necessary if the following conditions prevail: The supply voltage is less than the battery voltage, or, even worse, the supply voltage ranges above and below the battery voltage.

Step-Down Converter Operates from Single Li-ION Cell:  DN196 -  Design Notes (Linear Technology) (app note added 1/06)

Synchronous Buck Reference Design #2:  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%. In addition, the TPS5103 provides a soft-start function and over-current protection.  (added 3/05)

Synchronous Buck/Boost High Power White LED Driver:  Linear Technology LT3453 (app note added 2/05)

Up/Down Sequence of Supplies Using the ADM1060:  AN-667 - Analog Devices Application Note   (app note added 6/06)