[부산대 응용전기전자실험2] MOSFET 예비보고서

본 내용은 " [부산대 응용전기전자실험2] MOSFET 예비보고서 " 의 원문 자료에서 일부 인용된 것입니다. 2024.03.19

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• 1. MOSFET buck chopper

  MOSFET buck chopper는 DC/DC 컨버터의 한 종류로, 입력 전압에 비해 출력 전압을 낮추는 회로입니다. 스위칭 소자가 ON 상태일 때는 전류가 흐르게 되며, LC 회로에 의해 고주파 부분은 GND로 빠져나가고 저주파 부분만 통과하게 됩니다. 스위칭 소자가 OFF 상태일 때는 LC 회로에 의해 전류가 더디게 감소하여, 결과적으로 전류의 리플은 약간 존재하지만 구형파를 DC 전압으로 출력할 수 있게 합니다.

• 2. MOSFET boost chopper

  MOSFET boost chopper는 DC/DC 컨버터의 한 종류로, 입력 전압에 비해 출력 전압을 높이는 회로입니다. 스위칭 소자가 ON 상태일 때는 전류가 스위칭 회로 쪽으로 흐르면서 인덕터에 전류가 충전되며, 출력 커패시터에 충전되어 있는 전류는 다이오드에 의해 역방향으로 흐르지 않습니다. 스위칭 소자가 OFF 상태일 때는 인덕터에 충전되어 있던 전류가 방전되면서 입력 전압보다 더 큰 전압이 생성됩니다. 또한 출력 커패시터는 고주파를 흡수하는 역할을 합니다.

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• 1. MOSFET buck chopper

  MOSFET buck choppers are a type of DC-DC converter that are widely used in various electronic applications due to their efficiency, simplicity, and ability to step down voltage. The key components of a MOSFET buck chopper are the MOSFET switch, inductor, and output capacitor. The MOSFET switch is used to control the flow of current, while the inductor and capacitor work together to filter the output voltage and provide a smooth DC output. One of the main advantages of a MOSFET buck chopper is its high efficiency, which can reach up to 95% or more. This is because the MOSFET switch has very low on-resistance, resulting in low conduction losses. Additionally, the use of an inductor and capacitor allows for the efficient transfer of energy from the input to the output. Another benefit of MOSFET buck choppers is their simplicity and compact size. The circuit is relatively straightforward, with only a few key components, making it easy to design and implement. This makes MOSFET buck choppers a popular choice for applications where space and weight are at a premium, such as in portable electronics and power supplies. Overall, MOSFET buck choppers are a versatile and efficient solution for stepping down voltage in a wide range of electronic applications. Their high efficiency, simplicity, and compact size make them a valuable tool in the field of power electronics.

• 2. MOSFET boost chopper

  MOSFET boost choppers are a type of DC-DC converter that are used to step up the voltage from a lower input to a higher output. The key components of a MOSFET boost chopper are the MOSFET switch, inductor, and output capacitor. The MOSFET switch is used to control the flow of current, while the inductor and capacitor work together to filter the output voltage and provide a smooth DC output. One of the main advantages of a MOSFET boost chopper is its ability to efficiently step up the voltage. This makes it a useful tool in applications where a higher voltage is required, such as in renewable energy systems, battery chargers, and power supplies. The high efficiency of MOSFET boost choppers, which can reach up to 95% or more, is due to the low on-resistance of the MOSFET switch and the efficient energy transfer through the inductor and capacitor. Another benefit of MOSFET boost choppers is their simplicity and compact size. The circuit is relatively straightforward, with only a few key components, making it easy to design and implement. This makes MOSFET boost choppers a popular choice for applications where space and weight are at a premium, such as in portable electronics and power supplies. Overall, MOSFET boost choppers are a versatile and efficient solution for stepping up voltage in a wide range of electronic applications. Their high efficiency, simplicity, and compact size make them a valuable tool in the field of power electronics.