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DC DC Converters

RS3-4815S/H2 Application Field and Working Principle

DC-DC converters are devices that convert the voltage of a source to the voltage of a load, and are widely used in security, communication, computers, instruments, control systems, and other power transmission or power conversion occasions. The RS3-4815S/H2 converter adopts synchronous rectification, and its typical application field is 48V-15V/30A. Among them, RS3-4815S is a non-isolated step-down converter, which uses synchronous rectification for buck regulation. RS3-4815H2 is a high performance non-isolated step-down converter with synchronous rectification, with high efficiency and high frequency.

The working principle of RS3-4815S/H2 is a PWM controller that has been integrated with a MOS tube. It uses PWM to directly control the power device to achieve a switching mode power conversion. DC-DC conversion is a process of changing the voltage level. A simple DC-DC converter can be represented by a buck circuit, which means that the input DC power is regulated. The device simultaneously boosts the voltage at the same time to reduce the voltage. In the inverting converter, the input power is first converted into an AC signal by a high frequency switching circuit, then the signal is passed through a transformer to isolate it from the input power, and then it is passed through a rectifying circuit to convert it into a DC power.

The efficiency of the RS3-4815S/H2 converter is very high, and its maximum efficiency can reach up to 97% and more. With the wide input voltage range of 4.5V-36V, it can provide stable output voltage and current, and help save cost and reduce the size of the system. Besides, this converter supports various protections such as overload protection, short circuit protection, over temperature protection, under voltage protection and so on.

The RS3-4815S/H2 converter is an excellent choice for any 72V input to 15V output application. Since it is a single-chip, full-bridge synchronous rectification non-isolated step-down converter, it offers advantages of high efficiency, high reliability, and high power density in a compact and cost-effective form factor. It is suitable for most applications, such as security, communication, computers, instruments, control systems and other power transmission or power conversion occasions.

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