RB-1205S/EH

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DC DC Converters

The RB-1205S/EH DC/DC converter is a high performance, regulated power module specifically designed for industrial and commercial applications. It is capable of converting a wide range of input voltages to a regulated voltage of 12VDC at up to 05A (60W). The RB-1205S/EH is a high-efficiency, ultra-low-noise module with a built-in temperature compensated power-on reset, thermal shutdown and DC OK signal. It also has compliance to RoHS and the cooling capability needed for high power applications.

Application Field and Working Principle

The RB-1205S/EH power module is designed primarily for applications that require regulated, isolated DC power supplies. This includes devices such as communications and networking equipment, home and office equipment, industrial control systems, automotive and light aircraft electronics, and other applications in which noise-free power is essential.

The device utilizes a synchronous flyback topology whose main components are a high frequency transformer, two switches, an inductor, and a few passive components. During the conversion process, the power module switches the input power source rapidly between the two switches, generating high frequency AC voltage across the transformer’s primary winding. The rectified and filtered output from the secondary winding is the regulated DC output voltage. A high voltage electric field is created across the high frequency transformer and the two switches, while the whole high voltage resonance circuit is suffering from high voltage spikes. To protect the power module from the voltage spikes, primary and secondary provided electrostatic discharge (ESD) protection circuits are employed by the RB-1205S/EH.

The RB-1205S/EH power module operates with a wide input voltage range from 4.5V to 28V, making it suitable for automotive and other industrial applications. The recommended output voltage is 12VDC and the output current is up to 05A (60W). The device features soft-start and over-current protection, as well as a built-in status output pin that indicates output voltage presence (with 4.5V-28V input voltages). It is also RoHS compliant, meaning it meets the environmental protection requirements for lead-free installations. The device also features low-noise operation and high efficiency levels of up to 94%.

In summary, the RB-1205S/EH DC/DC converter is an ideal solution for industrial and commercial applications that require a regulated DC power supply. It is capable of providing a stable, low-noise power supply with wide input voltage range, adjustable output voltage, and a built-in safety features for protection. The device is RoHS compliant, making it environmentally friendly for installation and use in different applications.

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