Switch-mode Power Supply Circuit Diagram

Introduction

Switch-mode Power Supply Circuit is an efficient and cost-effective way to provide a stable and regulated voltage to electronic devices. The LM2674 IC is a popular choice for designing Switch-mode Power Supply due to its compact size and high efficiency. This IC can be used in a variety of applications like battery chargers, LED drivers, and portable devices. In this article, we will discuss the LM2674 IC, its features, working principle, and applications in detail.

Circuit Diagram

of Switch-Mode Power Supply Circuit

This Switch-Mode Power Supply Circuit can be built using a few basic components. The circuit diagram of this project is shown below.

**Switch-mode Power Supply Circuit Diagram**

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Features of Switch-Mode Power Supply Circuit

The LM2674 IC is a buck (step-down) Switch-mode Power Supply controller that operates in the range of 8V to 40V. It has a high efficiency of up to 92%, which makes it an ideal choice for battery-operated devices. The IC has a built-in thermal shutdown and current limit protections, which help to protect the device from overloading and short-circuits.

Working Principle of LM2674 IC:

The LM2674 IC uses pulse width modulation (PWM) technique to regulate the output voltage. PWM is a technique where the width of the pulse is varied to control the average voltage. The LM2674 IC produces a fixed frequency, which is typically 260 kHz. The output voltage is controlled by varying the duty cycle of the PWM waveform. The duty cycle refers to the ratio of on-time to the total time. The IC compares the output voltage with a reference voltage and adjusts the duty cycle to control the output voltage.

Applications of LM2674 IC:

The LM2674 IC can be used in various applications like battery chargers, LED drivers, and portable devices. It is particularly useful in battery-operated devices since it has a high efficiency and low standby current consumption. The IC can also be used in automotive applications like car audio systems, navigation systems, and power management systems.

Conclusion of Switch-Mode Power Supply Circuit

The LM2674 IC is an efficient and cost-effective solution for designing Switch-mode Power Supply Circuit. Its high efficiency, compact size, and built-in protections make it an ideal choice for a wide range of applications. The IC uses PWM technique to regulate the output voltage, and its output voltage can be adjusted by varying the duty cycle of the PWM waveform. The LM2674 IC has numerous applications in battery-operated devices, LED drivers, and automotive systems. It is a versatile and reliable IC for designing efficient and stable power supplies.