A schematic of a buck converter is shown below. Vin is the DC Input voltage. CTRL is a control signal that periodically switches ON and OFF. The control loop looks at the output voltage Vo and adjusts the duty cycle of CTRL to change Vo to the desired voltage.If Vo is to be set to 6V, the value of R Is gradually increased. What is the lowest value of R at which the inductor current touches 0 during the transient? Assume that the current through the inductor is always higher than 0. Also assume that the capacitor is large enough that Vo is almost constant and switching frequency of CTRL is 1 MHz and L=1 mH Vin - 10 V m Vo Vin CTRL C

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KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.