TDK has added two programmable isolated DC/DC converters to its TDK-Lambda range. The new DDSM models are rated at 120 W and 240 W and mount directly onto a DIN rail, with voltage settings and operating data available from the front panel or remotely over USB.
A key feature of the DDSM series is the amount of freedom it gives designers over the conversion ratio. Inputs can range from 10.8 V to 52.8 V, while the output can be set anywhere between 4.7 V and 57 V. That means a single unit can handle both step-up and step-down conversion across a range of industrial power requirements.
One Converter for Different Supply Requirements
TDK sees the broad voltage range being used in several ways. A DDSM converter can raise the voltage before a long cable run, for example, or generate a separate isolated supply for equipment with a different operating voltage. The company also lists isolated Power-over-Ethernet supplies among the potential uses.
The 120 W version supplies a nominal output current of 5 A, rising to 10 A for the 240 W model. Efficiency reaches 93% under standard operating conditions.
Programming and Monitoring from the Front Panel or USB
Operating parameters can be set directly from the converter using three front-panel push buttons and a digital display. The display also reports system alarms, status information and the current device settings.
For remote access, TDK-Lambda has added Modbus communication over USB. Used with the company's PowerCMC control and monitoring centre, this allows the DDSM converters to be configured and monitored from a connected system in real time.
A 24 V/1 A DC-OK signal is also accessible from the front panel for external status monitoring.
Both power versions use the same 40.0 × 116.6 × 115.0 mm enclosure and weigh 500 g. The series is intended for DIN-rail installation in factory automation, semiconductor manufacturing equipment, renewable energy systems, telecommunications and test and measurement equipment. The DDSM series carries IEC/EN/UL/CSA 61010 and 62368 safety certifications and meets EN 55032-B emissions requirements.
Learn more and read the original announcement at the TDK website.
Technology Overview
An isolated DC/DC converter transfers power between two DC voltage rails while providing electrical isolation between its input and output. Programmable converters add the ability to adjust operating parameters rather than limiting the system to a fixed output voltage.
Frequently Asked Questions
What output voltages can the TDK-Lambda DDSM series provide?
The DDSM converters have a nominal output range of 5 V to 55 V, with a maximum adjustment range of 4.7 V to 57 V. Their nominal input range is 12 V to 48 V.
What is the difference between the 120 W and 240 W DDSM models?
The 120 W model provides a nominal output current of 5 A, while the 240 W model provides 10 A. Both share the same voltage ranges, enclosure dimensions and programming capabilities.
How are the DDSM converters programmed and monitored?
Settings can be changed using the front-panel display and three push buttons. Remote configuration and real-time monitoring are available through Modbus over USB using TDK-Lambda's PowerCMC software.
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