Evaluation Board User Guide
UG-197
Rev. 0 | Page 9 of 16
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E
FFIC
IE
N
C
Y
(
%)
LOAD CURRENT (mA)
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140
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09417-
012
1MHz
700kHz
500kHz
200kHz
Figure 12. 5 V In to 15 V Out Efficiency with the Coilcraft Transformer at
Various Switching Frequencies
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120
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E
FFIC
IE
N
C
Y
(
%)
LOAD CURRENT (mA)
–40°C
+25°C
+105°C
09417-
013
Figure 13. 5 V In to 15 V Out Efficiency with the Coilcraft Transformer at
500 kHz and Various Temperatures
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90
110
140
130
60
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100
120
0
10
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E
FFIC
IE
N
C
Y
(
%)
LOAD CURRENT (mA)
1MHz
700kHz
500kHz
200kHz
09417-
014
Figure 14. 5 V In to 15 V Out Efficiency with the Halo Transformer at Various
Switching Frequencies
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110
140
130
60
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100
120
0
10
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E
FFIC
IE
N
C
Y
(
%)
LOAD CURRENT (mA)
5V IN TO 15V OUT
5V IN TO 12V OUT
09417-
015
Figure 15. Double Supply Efficiency with the Coilcraft Transformer for
Different Output Options at 500 kHz
