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Key Power Stage Parameters: Vin, Vout and Iout
Last modified by Microchip on 2025/01/09 09:52
Understanding the fundamental parameters of a buck (step-down) converter is crucial for designing and evaluating power efficiency and performance. Here, we'll explore the roles of Input Voltage (Vin), Output Voltage (Vout), and Output Current (Iout) in the operation of these converters.
Vin (Input Voltage): This is the source voltage supplied to the buck converter. It's typically higher than the desired output voltage, allowing for the step-down conversion.
Vout (Output Voltage): The regulated voltage provided by the converter to the load. In a buck converter, Vout is always less than or equal to Vin, controlled by the duty cycle of the switch.
Iout (Output Current): Represents the current drawn by the load from the converter. The inductor in the circuit smoothens this current, maintaining a steady supply to the load, with Iout being proportional to the load demand and inversely related to the output voltage set by the converter's control.
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