HPR407C

DC-DC converters are electronic circuits used to convert electric power from one DC voltage to another. HPR407C is an isolated, open-frame, modular DC-DC converter that is widely used for applications in data centers, transporters, communication infrastructure, factory automation, and more. This converter operates with an input voltage of 5-48V and is available as a single-stage or two-stage configuration, offering a well-balanced solution for various voltage and current requirements.

This converter has a high efficiency of 94%, a wide operating temperature range of -40˚C to +85˚C, rugged construction, and excellent thermal performance. In addition, the converter is designed for an input ripple current up to 2A, which makes it an ideal choice for applications with high input current ripple, such as renewable energy systems. The HPR407C converter also has a low switching frequency of 50kHz, which helps reduce EMI and offers increased reliability in sensitive applications.

The HPR407C converter is ideal for applications such as supporting PoE (Power over Ethernet) systems, industrial automation, instrumentation, automotive, and portable devices. The largest applications for this converter are in the telecoms and datacenter markets, where it is used to increase the power density of the system, reduce output ripple, and improve overall system efficiency.

The working principle of the HPR407C converter is based on a buck-boost topology. In this topology, the switching element is a MOSFET. The device is configured so that the MOSFET conducts when the input voltage is below the output voltage, and switches off when the output voltage is greater than the input voltage. Each input voltage is then switched through a transformer into a DC-DC converter circuit. This transformer isolates the input voltage from the output, allowing the device to operate over a wide input voltage range.

At the output side, the device consists of two stages. The first stage, a buck converter, is used to reduce the output voltage. The second stage, a linear buck-boost converter, is used to maintain the output voltage. Both stages are configured to operate at a switching frequency of 50kHz. This switching frequency is much lower than the switching frequencies found in other converters, and it helps reduce the amount of EMI generated by the device.

The HPR407C converter is also equipped with several protection features to ensure reliable operation. These protection features include input under-voltage lockout, output overvoltage and overcurrent protection, and short-circuit protection. These features provide additional reliability and safety for the device, improving the lifetime of the system in which they are used.

In conclusion, the HPR407C converter is a versatile, isolated, open-frame DC-DC converter that is well-suited for various applications. Its buck-boost topology, coupled with its low switching frequency, make it an ideal solution for PoE applications, industrial automation, and data center applications. In addition, its high efficiency, wide operating temperature range, and protection features make it an excellent choice for many power supply applications.