DER-96 datasheet(31/33 Pages) POWERINT

tên linh kiện	DER-96

Giải thích chi tiết về linh kiện	10 W Power Supply using DPA423P

PDF	33 Pages

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nhà sản xuất	POWERINT [Power Integrations, Inc.]

Trang chủ	http://www.powerint.com

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31 / 33 page

DER-96

10 W VoIP

September 12, 2005

Page 31 of 33

CONFIDENTIAL

Power Integrations

Tel: +1 408 414 9200 Fax: +1 408 414 9201

www.powerint.com

13 Radiated EMI scans

As can be seen from the radiated EMI scans below, the new board performs extremely

well compared to the original DPA423 power supply. This is because of optimal layout

and power supply filtering (including transformer shielding design).

The measurements were made in an open-field test site, with the AC-adapter (which

outputs 48 VDC). This AC-adapter was connected to 115 VAC via a LISN and the output

48 VDC was input to the DPA423 DC-DC converter.

Local baseline

radio interferance

Figure 31 – Radiated no-power Baseline

Figure 32 – Original board with DPA423 and AC-

adapter (230 VAC) – Output Floating

Figure 33 – New prototype board using DPA423 and

AC-adapter (230 VAC) – Output Floating

Figure 34 – New prototype board using DPA423 and

AC-adapter (230 VAC) – Output Hard Grounded

DER-96 bảng dữ liệu(PDF) 31 Page - Power Integrations, Inc.