Powerint 公司的DER230是采用TOP256EN的40W高效電源參考設(shè)計,主要用于迷你型筆記本電腦適配器.通用電壓90-265VAC輸入,滿負荷是的效率大于86%,230VAC時無負載的功耗低于120W，超過USA能源和能源之星EPS v2, EU CoC v4 和EuP Tier 2規(guī)范要求, 滿足EN55022B的EMC要求,并有8dB的富余量.本文介紹了DER230 40W電源參考設(shè)計的主要優(yōu)勢和指標,以及參考設(shè)計的詳細電路圖和所用材料清單.

40 W Power Supply Using a TOP256EN for Mini Notebook Adapter

40W高效電源主要特性和優(yōu)勢:

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.

圖1.DER230電源參考設(shè)計PCB外形圖

DER230電源指標:

圖2.DER230電源電路圖

DER230電源參考設(shè)計材料清單(BOM):