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Power supplies

The TDK-Lambda brand MU4 series of 1U high power supplies feature low acoustic noise and BF-ready medical isolation. The MU4 can provide 600W with an input of 85VAC to 264VAC (derate below 90VAC) and 800W with a 180VAC to 264VAC input. Up to five isolated output voltages can be configured using TDK-Lambda’s on-line quick product finder.

An intelligent fan speed control circuit uses a microcontroller algorithm to monitor the primary converter temperature and each secondary module. This enables the speed of the fan to be accurately adjusted and optimized to provide an audible noise as low as 36dBA, even with an 80% load.

Nine 150W to 400W rated output modules are available, providing continuous coverage from 3.3VDC to 104VDC. Each module includes remote on/off, remote sense, and an output good signal as standard. Options for the MU4 include a 5V/2A 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 of up to 90% and will operate in ambient temperatures of -20°C to 70°C, derating linearly to 50% load above 50°C. The earth leakage current is less than 300µA – including all tolerances, and the touch current is <100µA. The size is 89.0mm x 41.0mm x 257.5mm and a seven-year warranty is standard.

https://www.us.lambda.tdk.com