2.4W charger designed with LNK603DG, with circuit diagram, bill of materials, transformer specification file, printed circuit board layout

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

Photocoupler

Summary:

working principle

As shown in the figure is a 2.4 W constant voltage / constant current (CV / CC) universal input charger power supply circuit diagram, the design uses Power Integrations LinkSwitch series LNK-603DG. This design is suitable for cordless phone base chargers or any similar application with constant voltage/constant current characteristics. This document includes power specifications, circuit diagrams, bill of materials, transformer specifications, printed circuit board layout, and performance data.

design feature

• A revolutionary control concept that enables a low component count and low cost solution
• Primary side control eliminates secondary side controllers and optocouplers
• Constant pressure (CV) accuracy: ± 5%
• Constant current (CC) accuracy: ±10%
• Overheat protection with hysteresis recovery ensures PCB temperature is safe under all conditions
• Automatic restart: output short circuit and open loop protection
• Extremely energy efficient
• Average efficiency over the entire load range: 75% (ENERGY STAR 2.0 requires 67%)
• No-load input energy consumption: <30 mW at 230 VAC input
• Ultra-low leakage current: <5 μA at 265 VAC input (no Y capacitor required)
• Easily meet the following standard requirements:
• Class B Conducted EMI Requirements for EN55022 and CISPR-22 (EMI Margin >10 dBμV)
• IEC 61000-4-5 Level 3 AC Input Surge (10 kV Common Mode)
• IEC 61000-4-2 Electrostatic discharge immunity (range ±15 kV)

2.4W charger PCB physical map with 10kV common mode surge resistance

2.4W charger circuit diagram with 10kV common mode surge resistance

2.4W charger PCB layout with 10kV common mode surge resistance

List of 2.4W charger components with 10kV common mode surge resistance

See the uploading documentation for details (click to download)