adum3471 Analog Devices, Inc., adum3471 Datasheet - Page 19

• Manufacturer Part Number: adum3471
• Description: Pwm Controller And Transformer Driver With Quad-channel Isolators Adum3470/adum3471/adum3472/adum3473/adum3474
• Manufacturer: Analog Devices, Inc.

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