High-Efficiency Backup Power Supply Reference Design (PMP9761)
This reference design describes a backup power circuit which addresses instantaneous protection against power interruptions by using a buck-boost converter and a backup capacitor. The implementation is based on a completely integrated TPS63060 buck-boost converter circuit enabling a small total solution size. This configuration has been tested with a full test report and operation explanation.
Wide useable backup-capacitor voltage range (2.5-12V) results in smaller backup capacitance and solution size No glitches at the transition from main power to backup power operation Backup-capacitor type and size are selectable to meet backup power needs Up to 10 Watt output power Small and highly efficient single converter solution Support of pulsed loads connected to a weak supply
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