New PPS series offers higher power rating without compromising reliability

TDK Corporation introduces very high-power density 7,500W rated 1U high models to the TDK-Lambda GENESYS+ series of programmable power supplies. Initially, six models will be offered able to provide outputs from 0 to 20V at 375A through to 0 to 1,500V at 5A. The product's output power allows system configurators to bypass the need to parallel lower wattage power supplies, lowering the rack or cabinet size. The series benefits from DSP technology and the latest generation components, including ferrite materials, to obtain 91 to 92% efficiencies. Less internal waste heat ensures a higher power rating without compromising reliability.

Target applications for the 7,500W power supplies are automotive testing - including electric and hybrid cars, general test or research, measurement, semiconductor fabrication, battery manufacturing, and renewable energy.

The first six voltage models to be available are 0-20V/375A, 0-40V/188A, 0-100V/75A, 0-150V/50A, 0-600V/12.5A and 0-1500V/5A. The units can operate in constant current, constant voltage, or constant power limit modes and, in addition, offer internal resistance simulation. The units can be specified to accept three-phase 170 to 265VAC or wide range 342 to 528VAC inputs, with active Power Factor Correction. Operating efficiencies are up to 92%.

The device is ideal for zero stack rack mounting, measuring 423mm width, 486.5mm deep and 43.6mm (1U) high. Cooling is provided by variable speed fans that monitor the ambient temperature and the output load. The weight of the unit is less than 8.5kg for easy handling.

All models in the series offer a high contrast, wide viewing angle LCD with user controllable brightness and dimming functions, and faster up and down programming response times, with user adjustable voltage and current slew rate control. Arbitrary waveform test profiles of up to 100 steps can be generated and stored in four memory cells and activated by commands from the communication ports or the front panel controls.

For extra power, the 7,500W power supplies use TDK-Lambda's advanced parallel system (patent pending), allowing a multiple unit system to achieve a dynamic response and ripple and noise performance comparable to that of a single power supply. Up to 12 units can be connected in parallel simply by connecting a single data link cable between units and connecting the DC outputs in parallel. The command and auxiliary units auto-configure by detecting the parallel data connection and set their parameters accordingly.

Programming is consistent over the complete 1kW to 60kW series by either front panel controls, remotely via LAN (LXI 1.5), USB 2.0, and RS232/485 communications, or by utilising the isolated analogue control and monitoring (0-5V, 0-10V), which are supplied as standard. Optional interfaces include a selection of EtherCAT or Modbus-TCP, or GPIB (IEEE488.2). The software package includes software drivers, a waveform creator, and a virtual front panel GUI. Safety features are standard in all of the series power supplies, providing Safe/Auto Re-Start, Last Setting Memory, and built-in protection functions.

The five-year warranty series is safety certified to IEC/EN/UL 61010-1 with CE and UKCA marking to the Low Voltage, EMC and RoHS Directives. The series also complies with IEC/EN 61204-3 for conducted and radiated EMI and EMC immunity.