REC5-4809DRW/H4/C/SMD

DC DC Converters

DC DC Converters are a type of power supply that takes direct current (DC) from an input power source and converts it into specific levels of direct current or alternating current (AC). They are used in various fields, such as computers, communication equipment, renewable energy, industrial equipment, vehicles, and consumer electronics. Among them, REC5-4809DRW/H4/C/SMD is a High-efficiency DC-DC converter.

Application Field

The REC5-4809DRW/H4/C/SMD DC-DC converter is suitable for applications requiring higher conversion efficiency than those provided by currently available analog or digital converters, such as battery operated products. It is especially suitable for industrial applications, automotive components, communication systems and consumer electronics because of its wide voltage input range, low quiescent current, high efficiency and integrated over-temperature protection.

Its wide input voltage range gives the user the flexibility to select the most cost-effective power supply architecture and to reduce the number of components used in an application. For instance, if the DC-DC converter is used in a system with a battery voltage of 5V, then the REC5-4809DRW/H4/C/SMD can be operated at 5V or higher input voltage, which reduces the total cost of the system.

Working Principle

The REC5-4809DRW/H4/C/SMD is a synchronous step-down DC-DC converter integrated with a high-side MOSFET and low-side MOSFET. It works in synchronous rectification mode to maximize the efficiency. When the input voltage is greater than the output voltage, the high-side MOSFET is turned on, and the current flows through the low-side MOSFET, then into the inductor, and finally to the load. At the same time, when the input voltage is greater than the output voltage, the input capacitor provides the energy necessary for the system.

When the input voltage is lower than the output voltage, the high-side MOSFET is turned off. However, the inductor still stores some amount of energy that needs to be discharged. This energy is then directed to the output capacitor. Due to the inductor’s energy storage, the output capacitor is capable of providing the energy required by the load when the input voltage is lower than the output voltage.

Conclusion

The REC5-4809DRW/H4/C/SMD is a high-efficiency DC-DC converter with wide input voltage range, low quiescent current, high efficiency and integrated over-temperature protection. It can be used for various applications, such as industrial and automotive applications, communication systems and consumer electronics. It works based on the synchronous rectification mode and utilizes the inductor\'s energy storage capabilities to achieve high efficiency.