DC DC Converters

DC-DC converters are useful components used to convert direct current from one voltage level to another. The REC3.5-4812SRW/R8/A is a double-output DC-DC converter, which allows for simultaneous conversion of 12 VDC to 3.5 VDC. It requires 10 to 14.4 VDC as input, and is compliant with industrial standards such as EN55022 Class B, UL60950-1 and PSE.

Application Field Of REC3.5-4812SRW/R8/A

The application field of REC3.5-4812SRW/R8/A includes many industrial, automotive, aerospace, and medical applications. Some of the practical applications for the REC3.5-4812SRW/R8/A include:

• Providing a regulated 3.5V supply in an automotive, aerospace, or industrial environment
• Providing a 3.5 V backup for low voltage power supplies such as AC-DC wall adapters.
• Providing a 3.5V for charging batteries.
• For providing regulated power for medical devices.

Working Principle of REC3.5-4812SRW/R8/A

The REC3.5-4812SRW/R8/A DC-DC converter uses a boost inductor and two Schottky rectifier diodes for voltage conversion. The diagram below illustrates how the REC3.5-4812SRW/R8/A works to convert 12V input voltage to a 3.5V output voltage.

The diode D1 functions as the rectification bridge, allowing the input voltage to be converted to pulsating DC current. The L is an inductor that functions as the energy storage device during the voltage conversion. So when the switch S is connected with the positive power supply, the inductor L absorbs energy from the power supply and releases it when the switch is disconnected. The diode D2 prevents the inductor’s energy from flowing back to the input.

The sense resistor Rs is used to sense the input voltage, and the feedback IC senses the output voltage to offer control over the converter and the output voltage. This voltage control ensures a stable output voltage over a wide range of input voltage. The REC3.5-4812SRW/R8/A also has protections, such as an over-temperature, over-current, and short-circuit protection.

Conclusion

The REC3.5-4812SRW/R8/A is a DC-DC converter, which can convert 12 VDC to 3.5 VDC. It has wide application fields and offers great features, such as current protection and temperature control. The working principle of this converter is easy to understand as it works by boosting the input voltage and rectifying it before releasing it as an output voltage. Therefore, the REC3.5-4812SRW/R8/A is a great option for many automotive, industrial, medical, and aerospace applications.