NCP1560(2003) 데이터 시트보기 (PDF) - ON Semiconductor

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NCP1560
(Rev.:2003)

Full Featured Voltage Mode PWM Controller

ON Semiconductor 

NCP1560

Typical Characteristics

7

6

fOSC = 440 kHz

VAUX = 12 V

DC [ 50%

5

fOSC = 300 kHz

4

3

fOSC = 87 kHz

2

1

0

-50 -25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 9. Operating Auxiliary Supply Current

versus Junction Temperature

160

150

140

OV HYSTERESIS

130

120

110

100

UV HYSTERESIS

90

-50 -25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 11. Line Under/Over Voltage Thresholds

Hysteresis versus Junction Temperature

120

115

VAUX = 12 V

110 Measured from VOH to 0.5 VOH

105

100

95

90

85

80

75

70

-50 -25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 13. Current Limit Propagation Delay

versus Junction Temperature

4.0

3.5

OV THRESHOLD

3.0

2.5

2.0

1.5

UV THRESHOLD

1.0

0.5

0

-50 -25

0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 10. Line Under/Overvoltage Thresholds

versus Junction Temperature

600

575

550

CYCLE SKIP

525

500

CYCLE BY CYCLE

475

450

425

400

-50 -25 0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 12. Current Limit Thresholds versus

Junction Temperature

450

400

RT = 68 kW

350

300

250

RT = 101 kW

200

150

100

50

0

-50 -25

RT = 390 kW

0 25 50 75 100 125 150

TJ, JUNCTION TEMPERATURE (°C)

Figure 14. Oscillator Frequency versus

Junction Temperature

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