Power Design Tip 5: Use Circuit Diagram of Buck Controller in Buck-Boost Power Supply Design (Welcome to download PDF Read Full Article

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Electronic circuits typically operate at a positive regulated output voltage, which is typically provided by a buck regulator. If a negative output voltage is also required, the same buck controller can be configured in a buck-boost topology. Negative Output Voltage Buck-Boost is sometimes referred to as a negative inversion with an operating duty cycle of 50%, which provides an output voltage equivalent to the input voltage but opposite in polarity. It can adjust the duty cycle as the input voltage fluctuates, maintaining the regulation with a “buck” or “boost” output voltage.

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