Buck-boost converter without magnetics

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< Power Electronic ~ Buck-boost converter without magnetics

eric

Posted: Fri Sep 01, 2006 6:17 pm Post subject: Buck-boost converter without magnetics

Site Admin Joined: 01 Jan 1970 Posts: 311

A Linear Technology application
One of the problems that designers of portable equipment face is
generating a regulated voltage whose level lies between those of a
fully charged and a discharged battery. As an example, when a
3.3 V output is generated from a 3-cell battery, the regulator input
voltage changes from about 4.5 V at full charge to about 2.7 V
when the battery is discharged. At full charge, the regulator must
step down the input voltage, and when the battery voltage drops
below 3.3 V, the regulator must step up the voltage. The same
problem occurs when a 5 V output is required from a 4-cell input
voltage that varies from about 3.6 V to 6 V. Normally, a flyback or
SEPIC configuration

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