40 W Power Supply Using a TOP256EN for Mini Notebook Adapter

40W高效电源主要特性和优势:

Low cost, low parts count

High full load efficiency at 115 VAC / 60 Hz (>86%)

High active mode efficiency at 115 VAC / 60 Hz (>87%)

Exceeds USA Energy Independence and Security Act 2007 of 83%

Exceeds Energy Star EPS v2 requirement of 85.3%

Exceeds EU CoC v4 and EuP Tier 2 requirement of 85.3%

Low no-load consumption <120 mW at 230 VAC

High light-load efficiency

Tight primary sensed output overvoltage protection

Auto-restart output overvoltage protection and output overload protection

Auto-restart auto-recovery output short circuit protection

Meets EN55022B conducted EMC with >8 dB margin

This document is an engineering report describing a 40 W power supply utilizing a TOP256EN. This power supply was intended as a general evaluation platform for mini notebook or netbook adapters.

The document contains the power supply specification, schematic, bill of materials,transformer documentation, printed circuit layout, and performance data.

图1.DER230电源参考设计PCB外形图

DER230电源指标:

图2.DER230电源电路图

DER230电源参考设计材料清单(BOM):