AC/DC conduction cooled power module offers leading edge size

TDK Corporation has introduced the TDK-Lambda brand PFH500F-28 high-efficiency AC/DC power supplies. Rated at 504W, the baseplate conduction-cooled module is packaged in a compact 101.6mm x 61mm footprint. Utilising industry-standard PMBus commands, the output voltage and fault management levels can be altered (read/write), and product status read back. The series has been created for outstanding performance in COTS, LED signage, broadcast, communications, test and measurement equipment. The device has an operating efficiency of up to 92%, allowed through the utilisation of the latest technology. This comprises GaN semiconductors, bridgeless power factor correction with synchronous rectification and digital control. A digital isolator substitutes the traditional optocoupler for long-term stability and reliability. Operating from a broad range 85VAC to 265VAC input, the PFH500F-28 will deliver 18A at 28V with an adjustment capability of 22.4V-33.6V via the trim pin or the PMBus. The module has a baseplate temperature range of -40C to +100C and measures 101.6 x 61 x 13.5mm (L x W x H).