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Evaluation Board User Guide
80
70
60
50
40
30
1MHz
700kHz
20
500kHz
200kHz
10
0
0
10 20 30 40 50
LOAD CURRENT (mA)
Figure 12. 5 V In to 15 V Out Efficiency with the Coilcraft Transformer at
Various Switching Frequencies
80
70
60
50
40
–40°C
30
+25°C
+105°C
20
10
0
0
10 20 30 40 50
LOAD CURRENT (mA)
Figure 13. 5 V In to 15 V Out Efficiency with the Coilcraft Transformer at
500 kHz and Various Temperatures
60
70
80
90
100
110
120
130
140
60
70
80
90
100
110
120
130
140
80
70
60
50
40
30
20
10
0
0
10 20 30 40 50
Figure 14. 5 V In to 15 V Out Efficiency with the Halo Transformer at Various
80
70
60
50
40
30
20
10
0
0
10 20 30 40 50
Figure 15. Double Supply Efficiency with the Coilcraft Transformer for
Rev. 0 | Page 9 of 16
1MHz
700kHz
500kHz
200kHz
60
70
80
90
100
LOAD CURRENT (mA)
Switching Frequencies
5V IN TO 15V OUT
5V IN TO 12V OUT
60
70
80
90
100
LOAD CURRENT (mA)
Different Output Options at 500 kHz
UG-197
110
120
130
140
110
120
130
140
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