28
AN1507.0
September 11, 2009
Measured Data
The following data was acquired using a ZL6100EVAL2Z
rev 3 evaluation board.
Efficiency
The measured input power includes the quiescent current
for all three controllers on the evaluation board and is
included in the efficiency measurement for the separate
channels. Adaptive diode emulation and adaptive
frequency modes are disabled for these efficiency
measurements.
FIGURE 18. CHANNEL 1 EFFICIENCY
FIGURE 19. CHANNEL 2 EFFICIENCY
30
40
50
60
20
10
0
OUTPUT CURRENT (A)
E
FFI
CI
EN
CY (%
)
92
90
88
86
84
82
80
78
76
CH 1, V
IN
= 12V, V
OUT
= 1.8V
E
F
FI
CI
EN
CY (%)
95
90
85
80
75
70
OUTPUT CURRENT (A)
0
5
10
15
20
25
30
CH 2, V
IN
= 12V, V
OUT
= 1.5V
Application Note 1507
