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Application Note v0220 Copyright © 2020 SL Power Electronics Corp. All rights reserved.
SLPE Lean Line 24W Family
Class II External Power Supplies
AN-P053/19
Page 2Application Note v0220 Copyright © 2020 SL Power Electronics Corp. All rights reserved.
SLE Lean Line 24W
OVERVIEW
PROPER USE
The SL Power SLE24 Family of external power supplies are approved to IEC/UL/EN62368 and IEC/UL/EN60601-1 safety standards
and comply with the IEC60601-1-2 4th Edition collateral standard for electromagnetic disturbances. This adapter family is well suited
for ITE, multimedia, industrial and medical applications. Although IEC60601-1-2 is a system level standard, the power adapter is the
interface between the medical device and the AC power source and is an essential component in the path to achieving compliance to
the standard.
The SLE24 series of adapters has leading edge power conversion efficiency to reduce component temperatures, extend product use
life and reduce energy consumption. The SLE series adapters meet the U.S. Department of Energy (DoE) Level VI efficiency and No-
Load power consumption requirements. In addition SL Power Electronics has taken the lead in developing and providing IEC60601-1-2
4th Edition compliant power adapters.
The SLE24 series power supplies have enhanced Electro- Magnetic Compatibility (EMC) features offering increased Electrostatic
Discharge (ESD) protection, AC mains surge and Radio Frequency (RF) immunity, resulting in a more robust and reliable product.
The SLE24 model’s AC mains emissions comply with FCC & EN55032 and 55011 Class B levels with margin. Output emissions for
differential ripple and common mode voltage and current have been reduced to minimize system level electromagnetic interference
(EMI) and system circuit interference.
For long-term reliability, this model family uses high quality components to provide long life and have been thoroughly tested and
approved by regulatory agencies. See the product datasheet for more details.
This application note provides guidance for proper use, selection criteria, system design consideration and key performance data.
Additional performance data is available upon request.
The external power supplies have high power conversion efficiency; however, they do rely on convection cooling to the surrounding
environment (air) to prevent overheating or excessive internal and external surface temperatures. Therefore, there needs to be
adequate access to ambient air to ensure proper thermal performance of the power supply.
Do not cover the power supply with blankets, clothing, pillows, or any other poor thermal conductor.
Do not immerse the power supply in any liquid.
Avoid dropping the power supply on hard surfaces.
Avoid impacting the case of the power supply with any hard object.
Use the proper input cord (desktop version) for the power supply.
Use a proper mating connector for connection to the output of the power supply.
Do not exceed the power rating of the product.
Do not place adapter on body parts. This is not considered an “applied part.” Surface temperatures increase with increased
ambient temperature and loading.