NCP1218 Просмотр технического описания (PDF) - ON Semiconductor

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NCP1218

PWM Controller with Adjustable Skip Level and External Latch Input

ON Semiconductor 

NCP1218

TYPICAL CHARACTERISTICS

1.2

1.1

Rskip = 48.7 kW

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

−50 −25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 21. Adjustable Skip Threshold vs.

Junction Temperature

10

9

8

7

6

5

4

3

2

1

0

−50 −25 0

25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 23. Soft−Start Period vs. Junction

Temperature

1.2

1.0

0.8

0.6

0.4

0.2

0

1

10

100

1000

10000

RSkip, EXTERNAL SKIP RESISTOR (kW)

Figure 22. Skip Threshold vs. Skip Resistor

420

410

400

390

380

370

360

350

340

330

320

−50 −25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 24. Overload Timer Period vs. Junction

Temperature

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