Compact 1U 3500 W industrial rack mount supplies capable of providing hot swap redundant power

TDK Corporation announces the TDK-Lambda HFE3500 rack mount industrial 3500W power supply series. Each 1U high 19-in rack can accommodate up to four power supplies to deliver 13300W of bulk power or operate as a hot-swap redundant system. The internal ORing MOSFETs and current share function enable hot-swap operation and up to 12 HFE3500 units (three racks) can be connected in parallel. Applications include factory automation, Automatic Test Equipment (ATE), additive manufacturing, industrial printing, RF transmission, base stations and servers.

24V and 48V models are available with adjustment ranges of 24.0 – 27.6 and 48.0 – 55.2V. Communication with the power supplies is possible through the built-in isolated PMBus (I2C) interface. AC fail, DC good, remote output adjustment, remote on/off and a 5V or 12V auxiliary output are fitted as standard. There is an option for dual ac input fuses.

The HFE3500 power supplies have an  input range of 85 – 264Vac with power derating to 2016W below 170 Vac. The HFE3500-S1U/TB rack is fitted with input screw terminal blocks for a rugged connection. The power supply measures 107 x 40.1 x 330mm, and the rack 444.5 x 43.7 x 428mm. Cooling is provided by two internal, variable-speed fans. The HFE3500 modules’ efficiency is 94% at 230 Vac and 92% at 115 Vac input.

Safety certifications include IEC/UL/CSA/EN62368-1 and EN/UL61010-1; the series also carries the CE and UKCA marking for the Low Voltage, EMC and RoHS Directives. The units comply with EN55011 Class B, EN55032 Class B, FCC Title 47, Chapter 1, Part 15.107 – Class B, VCCI Class B for conducted EMI, plus EN55011 Class A, EN55032 Class A, FCC Title 47, Chapter 1, Part 15.109 – Class A, and VCCI Class A for radiated EMI. The HFE series’ input to output isolation is 3 kVac, the input to ground 2 kVac, and output to ground 500 Vdc. The models are backed by a five-year warranty.

Main applications: Factory automation, ATE, additive manufacturing, industrial printing, RF transmission, base stations, and servers.

Main features and benefits: Internal ORing MOSFET and current share; Up to 13300 W in 1U Rack; PMBus (I2C) as standard; External Output Voltage Adjustment