Datasheet

SLUU182 − March 2004
14
High-Performance Dual Synchronous Buck Conversion Using the TPS5124
5 Test Results
5.1 Efficiency Curves
The efficiency was tested under three different operation conditions.
I
OUT
− Output Current − A
Percent Efficiency − %
OVERALL EFFICIENCY
vs
OUTPUT CURRENT
VOUT1 (3.3 V) Enabled Only
Figure 6.
91
89
90
92
0 3 6 9 12 15
95
93
94
96
V
IN
= 6.5 V
V
IN
= 12 V
V
IN
= 15 V
I
OUT
− Output Current − A
Percent Efficiency − %
OVERALL EFFICIENCY
vs
OUTPUT CURRENT
VOUT2 (1.5 V) Enabled Only
Figure 7.
80
76
78
82
02 46810
88
84
86
90
92
V
IN
= 6.5 V
V
IN
= 12 V
V
IN
= 15 V