TOP250F datasheet(15/54 Pages) POWERINT

부품명	TOP250F

상세설명	Extended Power, Design Flexible, EcoSmart, Integrated Off-Line Switcher

PDF	54 Pages

Scroll/Zoom	100%

제조업체	POWERINT [Power Integrations, Inc.]

홈페이지	http://www.powerint.com

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15 / 54 page

Rev. R 10/20

TOP242-250

www.power.com

Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins

PI-2617-050100

Input

Voltage

C S

CONTROL

C L X S F

PI-2618-081403

Input

Voltage

CONTROL

2 M

RLS

VUV = IUV x RLS

VOV = IOV x RLS

For RLS = 2 M

VUV = 100 VDC

VOV = 450 VDC

DCMAX@100 VDC = 78%

DCMAX@375 VDC = 38%

Ω

PI-2623-092303

Input

Voltage

RIL

For RIL = 12 k

ILIMIT = 69%

See Figure 54b for

other resistor values

(RIL)

For RIL = 25 k

ILIMIT = 43%

CONTROL

Ω

Figure 16. Three Terminal Operation (LINE-SENSE and

EXTERNAL CURRENT LIMIT Features Disabled.

FREQUENCY Pin Tied to SOURCE or CONTROL Pin).

Figure 17. Line-Sensing for Undervoltage, Overvoltage and Line

Feed-Forward.

Figure 20. Externally Set Current Limit.

Figure 21. Current Limit Reduction with Line Voltage.

Figure 18. Line-Sensing for Undervoltage Only (Overvoltage

Disabled).

Figure 19. Linse-Sensing for Overvoltage Only (Undervoltage

Disabled). Maximum Duty Cycle Reduced at Low Line

and Further Reduction with Increasing Line Voltage.

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