LY9523 데이터 시트보기 (PDF) - Unspecified

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LY9523

LY9523 Thru LY9528 / PWM Controller IC / DIP 8 PIN

Unspecified 

STGLSEMI

LY952X 设计准则

案例.

下面附圖為 STGL semiconductor 自行設計的 24W adaptor 外觀照片以及測試波形,

Figure 2-1 Demo Adaptor Top View.

LY9528+EE25

Efficient

OUT:V OUT:A IN:W

Figure 2-2 Demo Adaptor Bottom View

Average

efficiency

Vds:V

90V50Hz 12.2800 2.0000 29.3200 83.77%

12.2800 0.0000 0.1300

266.00

115V50Hz

12.2800

12.2800

12.2800

12.2800

12.2800

2.0000

1.5000

1.0000

0.5000

0.0000

28.5300

21.2500

14.1000

7.2000

0.1600

86.08%

86.68%

87.09%

85.28%

86.28%

306.00

230V50Hz

12.2800

12.2800

12.2800

12.2800

12.2800

2.0000

1.5000

1.0000

0.5000

0.0000

28.3400

21.2400

14.3200

7.3500

0.2100

86.66%

86.72%

85.75%

83.54%

86.08%

472.00

264V50Hz 12.2800 2.0000 28.4600 86.30%

12.2800 0.0000 0.2400

以上测试为 PCBA 上的 Eff.

Figure 2-3 E ff Test

508.00

以下为 Vds 在不同的 INPUT 电压.OUTPUT:12V2A 测试的波形.探头为:100:1.

5 of 8

2011/9/21

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