VI-26Y-IY-F4 Power Supplies - Board Mount

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DC-DC converters are mainly used for power conversion, voltage stabilization, power factor corrections, and harmonic attenuation. The VI-26Y-IY-F4 DC-DC Converter provides high accuracy voltage transformations with superior power efficiency. The converter can range from medium to high voltage and current to meet the needs of various application fields.

Applications

The VI-26Y-IY-F4 is an ideal solution for direct conversion power applications, such as telecommunications, medical equipment, automotive systems, industrial control systems, AC/DC and DC/AC power conversion, and distributed power systems. It can also be used in equipment that needs efficient and accurate structure, such as electronic instruments, remote control systems, video image systems, and process automation.

The VI-26Y-IY-F4 has an operating temperature range from -25°C to 60°C (-13°F to 140°F), and can operate safely in temperatures up to 90°C (194°F), depending on the application. The operating frequency can be set from 50kHz to 150kHz. The input voltage can range from nominal input voltage to twice the nominal input voltage.

Working Principle

The VI-26Y-IY-F4 is an isolated type DC-DC converter that uses interleaved pulse-width modulation in order to provide high accuracy and improved power efficiency. In order to provide excellent thermal performance, the device uses two separate half-bridge topologies, with a transformer for isolating the input and output. It also features a built-in self-biased current limiter to control the output current.

The transformer serves as an isolator and also as an energy storage element. The two interleaves are driven at the same time, and different duty cycles are applied to both switches. This method increases the power efficiency of the converter and lowers the input ripple current. In order to maintain a constant output voltage, the switching control circuit detects the voltage difference between the actual output voltage and the programmed value, and adjusts the duty cycle of the corresponding switch.

Advantages

The VI-26Y-IY-F4 DC-DC Converter provides several advantages over other types of converters, such as high isolation voltage, low ripple, high power efficiency, and low EMI. It also features built-in current limiting, overvoltage protection, and over-temperature protection. The small size and lightweight design of the device makes it suitable for use in many applications. In addition, the device is RoHS compliant and can operate in both continuous conduction mode (CCM) and discontinuous conduction mode (DCM).

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