AN4345 datasheet(12/28 Pages) STMICROELECTRONICS

tên linh kiện	AN4345

Giải thích chi tiết về linh kiện	This document describes a two output buck with the VIPer16LD

PDF	28 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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12 / 28 page

Board testing

AN4345

12/28

DocID025078 Rev 1

The ripple at the switching frequency, superimposed to the output voltage VOUT1, has also

been measured and it is shown in figures below at maximum load and nominal input

voltages.

Figure 11. Line regulation

(external biasing, Iout2 = 0 mA)

Figure 12. Line regulation

(external biasing, Iout2 = 50 mA)

11.2

11.4

11.6

11.8

12.2

12.4

12.6

12.8

105

130

155

180

205

230

255

Vin[V]

25%

50%

75%

100%

AM13816V1

AM13817V1

11.2

11.4

11.6

11.8

12.2

12.4

105

130

155

180

205

230

255

Vin[V]

25%

50%

75%

100%

Figure 13. Load regulation

(external biasing, Iout2 = 0 mA)

Figure 14. Load regulation

(external biasing, Iout2 = 50 mA)

AM13818V1

11.6

11.8

12.2

12.4

12.6

12.8

0.05

0.1

Iout[A]

115

230

265

AM13819V1

11.6

11.8

12.2

12.4

12.6

12.8

0.05

0.1

Iout[A]

115

230

265

Figure 15. Output voltage ripple at max.

load 90 VAC

Figure 16. Output voltage ripple at max.

load 265 VAC

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