SLVA340A Datasheet, PDF (7/9 Pages) Texas Instruments – High-Integration, High-Efficiency Power Solution Using DC/DC Converters With DVFS

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4.1 Test Results
The start-up waveform shown in Figure 3 specifies the required sequence.
List of Material
Figure 3. Shows Sequencing in Start-Up Waveform
100
90
V_I = 3.6 V
80
V_I = 2.5 V
100
V_I = 2.5 V
90 V_I = 3.6 V
80
70
60
V_I = 4.2 V
50
V_I = 5 V
40
70
V_I = 4.2 V
60
50
V_I = 5 V
40
30
20
T_A = 25°C
10
V_O = 1.2 V
PWM/PFM Mode
0
0.01 0.1
1
10
100
1 k 10 k
I_O - Output Current - mA
Figure 4. DCDC1: Efficiency vs Output Current
30
20
T_A = 25°C
V_O = 1.8 V
10
PWM/PFM Mode
0
0.01 0.1
1
10
100
1 k 10 k
I_O - Output Current - mA
Figure 5. DCDC2: Efficiency vs Output Current
SLVA340A – June 2009 – Revised May 2010
High-Integration, High-Efficiency Power Solution Using DC/DC Converters With
7
DVFS
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