Sunday, July 21, 2024

300% Peak Power Supplies For Medical And Industrial Applications

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Compact PCB layout optimised for free-air convection, high efficiency offers reduced energy consumption and safety certified

Increasing levels of automation in industrial and medical applications require power supplies to deliver extra power during peak operation times run dynamic loads e.g., motor startup. To fulfil such conditions, the power supply must be designed with a high dynamic control level and a power stage that sustains repetitive peak loads.

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The new 600W free-air convection cooling power supplies, the AEA600F series by COSEL is a step towards that. It delivers 300% peak power for up to 1,000 milliseconds, responding to the market requirements from industrial and medical equipment.

For industrial applications, efficient power supplies that work in various environments with a high level of safety are important. The AEA600F is certified to the EN62477-1 Over Voltage Category Three (OVC III), which allows the final equipment to be directly connected to the main distribution panel. This prevents the addition of an extra level of isolation and simplifies the systems designer’s task, reducing costs and increasing efficiency.

For medical applications, the AEA600F input to output isolation complies with 2MOPP, its input to ground with 1MOPP, and output to ground with 1MOPP, making the product suitable for Body Floating (BF) applications. The units are approved in accordance with ANSI/AAMI ES60601-1 and EN60601-1 3rd Edition.

The AEA600F has an input to output isolation of 4,000VAC, input to ground (FG) of 2,000VAC and output to ground (FG) of 1,500VAC. It also has an input voltage of 85 to 264VAC. Three output voltages: 24V, 36V and 48V are available with respective current ratings of 25A, 16.7A and 12.5A. The output voltage can be adjusted using a built-in potentiometer.

For low harmonic current distortion, the AEA600F uses active Power Factor Corrector (PFC), and the switching stage uses an LLC resonant topology deploying the latest generation of power semiconductors, conferring to a typical efficiency of up to 95%. Additional power can be acquired by connecting six units of AEA600F in parallel. This connection also enables the ‘Slaves’ to automatically adjust their output voltage to be of equal value, whenever the output voltage on the ‘Master’ unit is adjusted. 

Optimized for convection cooling, the AEA600F can be operated within an ambient temperature range of -20 to +70 degrees centigrade. Depending on the assembly method and ventilation used in the final equipment, a derating may apply. The equipment also includes built-in inrush current, overcurrent, overvoltage protection circuits and thermal protection.

Measures 41mm x 127mm x 186mm (1.61 x 5 x 7.32 inches) and weighing 1kg, the series is suitable for a large range of applications such as: 

  • Robotics, 
  • Infusion-pumps
  • Ventilators
  • Actuators
  • Process controL
  • Radio and transmission equipment
  • Emergency signalling

 For additional application-specific requirements, a number of options are available including: 

  • Coating (C)
  • Additional cover (N)
  • Vertical positioned screw on a terminal block (T) 
  • Terminal block changed to a connector (J)
  • Auxiliary outputs (AUX1 12V1A), (AUX2 5V1A)
  • Remote ON/OFF 
  • Alarm (R3)
  • UL508 certification (T5)
  • Overcurrent protection mode changed from hiccup mode to shutdown (P5)


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