Answer :
Final answer:
To achieve efficient conversion and less noise in a power supply, the combination of a Low Dropout Regulator followed by a buck converter is commonly used. This setup improves ripple rejection and reduces noise, ideal for sensitive electronic devices. Option c is the correct answer.
Explanation:
To achieve both more efficient conversion and less noise in a power supply system, the commonly used combination of components is a Low Dropout Regulator (LDO) followed by a buck converter. This combination provides a smooth and efficient voltage regulation with minimal noise on the output, making it ideal for sensitive electronic devices.
An LDO is efficient for small voltage drops due to its low dropout voltage, while a buck converter offers efficient conversion for larger drops. Including an LDO before a buck converter improves the ripple rejection and reduces the noise, which is crucial for applications requiring a stable and clean power supply. Combining an LDO with a buck converter offers an effective solution for enhancing efficiency and reducing noise in power supply systems.
