TDK-Lambda at Southern Manufacturing & Electronics show

On show will be the revolutionary EFE Series. These ultra small embedded front-end power supplies employ a low cost 8-bit microcontroller to achieve full digital control of the output and to handle housekeeping routines; thus replacing the conventional analogue circuitry without the associated cost premium a DSP-based digital solution would bring. The first products in the range are the 300W EFE300 and EFE300M and the 400W EFE400 single output supplies. The EFE300M meets the rigorous international safety standards for medical equipment – with 4kVAC reinforced input to output isolation and other specifications such as output to ground isolation of 1500VAC – making it suitable for use in B and BF type medical applications.

Following the success of its PFE range of AC-DC full-brick power supplies, TDK-Lambda’s PFE-S Series integrates enhanced circuitry to improve lightning surge capability (up to 6kV) and line interrupt hold-up time. Like the existing range, these integrated power full-bricks combine the AC to HVDC front-end with DC-DC converter into a single standard format. The fully-regulated PFE300S and PFE500S models are available in 12, 28 and 48V nominal outputs and can be adjusted over a ±20% range. The semi-regulated PFE700S can deliver 714W with a nominal output of 51V and provides a high efficiency (up to 89%) AC-DC stage for powering regulated DC-DC converters for multiple output applications – both parallel and series operation are possible.

Also on display are new additions to TDK-Lambda’s PX family of single- and dual-output 15W DC-DC converter, which are available in open frame (PXA) and six sided, shielded metal case (PXB) styles. The PXA Series offers single output models with nominal 24V and 48VDC inputs in 2:1 and 4:1 versions. The PXB Series offers single and dual output models with nominal 12VDC 2:1 version and 24V/48VDC versions in 2:1 and 4:1 format. Output voltages available are 3.3, 5, 12 and 15VDC with efficiency of up to 88%.

Particularly well-suited to budget conscious applications, TDK-Lambda will unveil the new 25W and 35W models to its LS Series of convection cooled single output power supplies. These general purpose units are up to 4% more efficient than similar products available on the market today – this extremely efficient design achieves excellent thermal properties and offers higher reliability. The 25W LS25-48 model, for instance, achieves a typical efficiency of 85%. Standard output voltages range from 3.3 to 48VDC, delivering currents up to 7A. To accommodate non-standard system voltages, the LS Series is user adjustable.