Bootstrap Power Supply for Motor Control and Inverter Systems

Bootstrap power supplies can be used to reduce the number of isolated power supplies or DC-to-DC converters. This helps to reduce cost and the PCB space as compared to transformer-based power supplies. The bootstrap output power supply circuit is used to power the top-bridge gate drives by making use of the inverter operating conditions to store and deliver the necessary power charges. This whitepaper focuses on the bootstrap power supply for motor control and inverter systems.

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