TOP257YN datasheet(41/48 Pages) POWERINT

Part #	TOP257YN

Description	Enhanced EcoSmart짰, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range

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Manufacturer	POWERINT [Power Integrations, Inc.]

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41 / 48 page

Rev. F 01/09

41

TOP252-262

www.powerint.com

Typical Performance Characteristics (cont.)

6

4.5

5.5

5

2

0

100

200

500

400

300

VOLTAGE-MONITOR Pin Current ( A)

3

2.5

3.5

4

1.6

1.0

1.4

1.2

0

-200

-150

-50

-100

0

EXTERNAL CURRENT LIMIT Pin Current ( A)

0.4

0.2

0.6

0.8

V

X = 1.354 - 1147.5 ×

I

X

1.759 × 106 ×

(I

X)

2 with -180 A

I

X

-25 A

6

5

4

3

2

1

0

-200 -100

0

100

200 300 400 500

MULTI-FUNCTION Pin Current ( A)

See expanded

version

(Figure 63b)

1.2

1.4

1.6

0.4

0.6

0.2

0.8

1.0

0

-200

-150

-50

-100

0

MULTI-FUNCTION Pin Current ( A)

V

M = 1.354 - 1147.5 ×

I

M

1.759 × 106 ×

(I

M)

2 with -180 A

I

M

-25 A

1.2

1.0

0.8

0.6

0.4

0.2

0

-50 -25

0

25

50

75 100 125 150

Junction Temperature ( C)

1.2

1.0

0.8

0.6

0.4

0.2

0

-50 -25

0

25

50

75 100 125 150

Junction Temperature ( C)

Figure 62b. EXTERNAL CURRENT LIMIT Pin Voltage vs. Current.

Figure 63a. MULTI-FUNCTION Pin Voltage vs. Current.

Figure 63b. MULTI-FUNCTION Pin Voltage vs. Current (Expanded).

Figure 64. Control Current Out at 0% Duty Cycle vs. Temperature.

Figure 65. Maximum Duty Cycle Reduction Onset Threshold

Current vs. Temperature.

Figure 62a. VOLTAGE-MONITOR Pin vs. Current.

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TOP257YN Datasheet(PDF) 41 Page - Power Integrations, Inc.

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