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ADUM3471ARSZ Datasheet(PDF) 19 Page - Analog Devices

Part # ADUM3471ARSZ
Description  PWM Controller and Transformer Driver with Quad-Channel Isolators
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADUM3471ARSZ Datasheet(HTML) 19 Page - Analog Devices

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ADuM3470/ADuM3471/ADuM3472/ADuM3473/ADuM3474
Rev. 0 | Page 19 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
1500
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
0
50
100
150
200
250
300
350
400
450
500
ROC (Ω)
Figure 9. Switching Frequency (fSW) vs. ROC Resistance
80
70
60
50
40
30
20
10
0
0
500
450
400
350
300
250
200
150
100
50
LOAD CURRENT (mA)
1MHz
700kHz
500kHz
200kHz
Figure 10. Typical Efficiency at 5 V In to 5 V Out at Various Switching
Frequencies with Coilcraft Transformer
80
70
60
50
40
30
20
10
0
0
500
450
400
350
300
250
200
150
100
50
LOAD CURRENT (mA)
1MHz
700kHz
500kHz
200kHz
Figure 11. Typical Efficiency at 5 V In to 5 V Out at Various Switching
Frequencies with Halo Transformer
80
70
60
50
40
30
20
10
0
05
450
400
350
300
250
200
150
100
50
LOAD CURRENT (mA)
00
–40°C
25°C
105°C
Figure 12. 5 V In to 5 V Out Efficiency over Temperature with Coilcraft
Transformer at 500 kHz fSW
80
70
60
50
40
30
20
10
0
0
500
450
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350
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50
LOAD CURRENT (mA)
5V IN TO 5V OUT
5V IN TO 3.3V OUT
3.3V IN TO 3.3V OUT
Figure 13. Single-Supply Efficiency with Coilcraft Transformer at 500 kHz fSW
80
70
60
50
40
30
20
10
0
0
140
90 100 110 120 130
80
70
60
50
40
30
20
10
LOAD CURRENT (mA)
1MHz
700kHz
500kHz
200kHz
Figure 14. 5 V In to 15 V Out Efficiency at Various Switching Frequencies with
Coilcraft Transformer



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