Microcontroller-controlled smart power supplies for industrial and medical applications offered by TDK-Lambda

Jan. 13, 2023
Intelligent fan speed control uses a microcontroller algorithm to monitor temperature of the primary converter and each individual secondary module.

SAN DIEGO – TDK-Lambda Americas Inc. in San Diego is introducing the MU4 series of 1U-high power supplies for industrial equipment, test and measurement, medical, and broadcast applications.

These power electronics devices offer low acoustic noise and BF-ready medical isolation, and can provide 600 Watts with an input of 85 to 264 volts AC (derate below 90 volts AC) and 800 Watts with a 180 to 264 volts AC input.

Systems designers can configure as many as five isolated output voltages using TDK-Lambda's on-line quick product finder.

An intelligent fan speed control circuit uses a microcontroller algorithm to monitor the temperature of the primary converter and each individual secondary module. This enables users to adjust the speed of the fan to provide an audible noise as low as 36 dBA, even with an 80 percent load. A low noise level improves patient comfort and reduces operator fatigue.

Related: Microcontroller family that helps boost efficiency of power electronics devices introduced by Pulsiv

Initially nine 150-to-400-Watt output industrial-grade modules are available, providing continuous coverage from 3.3 volts to 104 volts DC. Each module includes remote on/off, remote sense, and an output good signal as standard.

Options for the MU4 include a 5-volt and 2-amp standby voltage, fan fail signal, inhibit and enable for all outputs, AC fail, PMBus communication, and current share for configurations requiring parallel operation.

The product has efficiencies to 90 percent and will operate in ambient temperatures of -20 70 degrees Celsius, derating linearly to 50-percent load above 50 C. The earth leakage current is less than 300 microamps, including all tolerances, and the touch current is less than 100 microamps. The size is 3.5 by 1.61 by 10.1 inches. A seven-year warranty is provided as standard.

The MU4 series has an input to output isolation of 4,000 volts AC (2 by MoPP), an input to earth isolation of 1,500 volts AC (1 by MoPP), and an output to earth isolation of 1,500 volts AC (1 by MoPP) for suitability in B- and BF-rated medical equipment.

Related: Microcontrollers with safety features for industrial, home, and vehicle applications introduced by Microchip

Safety certification is to IEC/EN 60601-1, ES 60601-1. IEC/EN/CSA/UL 62368-1, (IEC/EN 61010-1 designed to meet) and is CE and UKCA marked to the low voltage, EMC, and RoHS EU directives and UK regulations.

The models meet EN 55011-B, EN 55032-B radiated and conducted emissions and comply with the EN 60601-1-2:2015 (Edition 4) and EN 61000-4 immunity standards.

For more information contact TDK-Lambda Americas online at www.us.lambda.tdk.com.

Voice your opinion!

To join the conversation, and become an exclusive member of Military Aerospace, create an account today!