VI-JNF-IY-F3

Current - Output (Max):	694mA
Base Part Number:	VI-JNF
Size / Dimension:	2.28" L x 1.80" W x 0.79" H (57.9mm x 45.7mm x 20.0mm)
Package / Case:	Half Brick
Mounting Type:	Through Hole
Efficiency:	90%
Operating Temperature:	-40°C ~ 100°C
Features:	OCP, SCP
Applications:	ITE (Commercial)
Voltage - Isolation:	3kV
Power (Watts):	50W
Series:	VI-J00™
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	72V
Voltage - Input (Max):	76V
Voltage - Input (Min):	36V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active
Packaging:	Bulk

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DC-DC Converters

DC-DC converters are electrical circuits or devices that convert a source of direct current (DC) from one voltage level to another. These devices are commonly used when the load is powered by multiple sources of DC power from different voltages, or when the voltage needs to be stepped up or stepped down in order to comply with the requirements of the load. The most common Operating Principles of DC-DC converters are Buck-Boost, Forward converter, Flyback converter, and Cuk converter.

VI-JNF-IY-F3 Application Field and Working Principle

The VI-JNF-IY-F3 is a USB voltage induced device that performs multiple steps of digital signal conversion. This DC-DC converter offers a cost-effective solution for controlling numerous applications of display, lighting and digital inputs. Using a design that harnesses the power of USB power management, the VI-JNF-IY-F3 is able to access multiple levels of digital and analog signals from the same source.The VI-JNF-IY-F3 is based on the flyback converter topology, which is a Buck-Boost converter with extra levels of operation. This converter is made of two parts, the primary side and the secondary side. On the primary side, the USB input is interlaced with the voltage. Additional elements, such as a transformer or inductor, are used to amplify the power means to step up the voltage from the USB source. On the secondary side, the additional amplifications are done in order to step down the voltage in a controllable and adjustable manner.The VI-JNF-IY-F3 uses an isolated feedback loop to accurately control the output voltage within tight voltage and current limits while maintaining optimum overall efficiency. The PoE (Power Over Ethernet) support feature of the device will now allow external devices to be powered over the same Ethernet connection as the VI-JNF-IY-F3. This feature is especially beneficial for applications that require multiple devices to be powered on the same line.

Advantages

The VI-JNF-IY-F3 provides designers with several advantages over other DC-DC converters. Firstly, the device can offer up to 80% power efficiency, making it one of the most efficient DC-DC converters on the market. It also features a very low power dissipation and remarkably small size. When compared with larger, bulky DC-DC converters, the VI-JNF-IY-F3 offers a cost savings and also increases system performance. Furthermore, the VI-JNF-IY-F3 is an ideal choice for current-sensitive applications, as its isolated voltage feedback loop allows the device to maintain a very tight control over the output voltage and current to minimize power losses. As the device can output up to 3 amps and generate up to 14 volts, it can power most medium and large digital input and output devices.

Conclusion

The VI-JNF-IY-F3 is one of the most efficient DC-DC converters on the market, and is suitable for a broad range of applications. Its isolated feedback loop and support for PoE make it an ideal choice for current-sensitive applications. The device boosts power efficiency while minimizing size and power dissipation. Additionally, its limited input voltage range is suitable for most USB sources.

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