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What is Keeping Bootstrap Capacitors Charged about?

This document provides design tips for keeping the bootstrap capacitor charged in buck converters. It discusses situations where the capacitor may fail to charge such as during start-up with no load, in battery charger applications during start-up and stop-restart, and during operation with low load. It recommends sizing the output capacitor at least 10 times larger than the bootstrap capacitor for successful no-load start-up. It also provides solutions such as adding a resistor from the input to derivate a

Author

bbs557comtw

Language

EN