Powerbox, one of Europe’s power supply companies and who has taken part in optimizing power solutions for demanding applications, has announced a new range of high-voltage input DC/DC converters for microgrid, datacenters, and industrial applications. Part of its industrial line, the new series of HVDC/DC converters operate with an input voltage range of 180VDC to 425VDC, and deliver output power levels from 150W to 750W. The range of applications powered by high-voltage DC supplies is rapidly expanding, and from the latest microgrids and datacenters using high voltage DC (HVDC) bus voltages to reduce power losses through to industrial systems, all of these applications require ready to use, board-mounted power converters. The PQB-PHB-PFB300S series is specially designed for such applications. They are built around a high efficiency topology, have a layout optimized for thermal conduction, an input/output isolation of 3,000 VAC minimum and deliver output voltages from 3.3VDC to 48VDC.
Energy network managers and systems architects developing electronic equipment connected to microgrids are concerned about energy efficiency and utilizing direct conversion from the 350VDC bus for specific applications. In many cases the voltage conversion is achieved using single stage, modular HVDC/DC converters stepping down the bus voltage to the load. The same is now happening in the latest generation of datacenters, increasing energy utilization by the reduction of power losses by migrating from AC distribution to HVDC. High voltage DC distribution is also very common in industrial electrical vehicles such as are used in the mining and tunnel industries. These require fully encapsulated power modules able to operate within a wide temperature range, and down to -40 degrees C. Such applications are what the PRBX PQB-PHB-PFB300S HVDC/DC converters series is designed for.
In order to provide a solution for any application powered from a high-voltage bus, the PRBX PQB-PHB-PFB300S series includes four power levels (150, 300, 600 and 750W) in three industry-standard packaging formats and footprints; quarter, half and full-brick.
Designed for use in industrial environments, the PQB-PHB-PFB300S series can be operated within a wide temperature range of -40 to +100 degrees C and in 95% of non-condensing relative humidity. The modules’ thermal shutdown is set to protect the units when the housing reaches 105 degrees C.
As required for HVDC bus voltage applications, all products have an input to output isolation of 3,000VAC minimum. The input to case isolation is 2,500VAC and output to case is 500VAC. The isolation resistance is 107 (10 to the power of 7) ohms minimum.
The PRBX PQB-PHB-PFB300S series meet the requirements of UL60950-1, EN60950-1 and IEC60950-1 standards and CE mark 2014/30/EU.
Source: Powerbox USA, Inc.
