Circuit design of 3W power supply for industrial control with ultra-wide range input

Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM

Summary:

This design uses the TNY280PN's reduced current limit mode to achieve a 5 V, 600 mA wide input voltage range (18 to 265 VAC). Applications for such power supplies include auxiliary power supplies for industrial control.

design feature

• Ultra-wide input voltage range (18 – 265 VAC)
• Extremely energy efficient
• Efficiency is 65%
• Very low no-load power consumption (less than 200 mW at 230 VAC AC input)
• Compliant with CISPR-22/EN55022B conducted EMI limits, EMI margin greater than 10dBμV (see Figure 4)
• Floating current source supplies current to the BP/M pin
• Automatic restart function allows unlimited short-circuit output

Wide range input 5 V, 600 mA power supply circuit diagram

See the uploading documentation for details (click to download)