Texas Instruments TPS543620, Руководство пользователя

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Output Current (A)
Efficiency
(%)
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
60
65
70
75
80
85
90
95
100
V
IN
= 5 V
V
IN
= 12 V
V
IN
= 15 V
V
OUT
= 1 V f
SW
= 1500 kHz
Figure 3-1. U1 Efficiency
Output Current (A)
Efficiency
(%)
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
60
65
70
75
80
85
90
95
100
V
IN
= 5 V
V
IN
= 9 V
V
IN
= 12 V
V
IN
= 18 V
V
OUT
= 1 V f
SW
= 1000 kHz
Figure 3-2. U2 Efficiency – Default Configuration
Output Current (A)
Efficiency
(%)
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
60
65
70
75
80
85
90
95
100
V
OUT
= 0.8 V
V
OUT
= 1 V
V
OUT
= 1.2 V
V
OUT
= 1.5 V
V
OUT
= 1.8 V
V
IN
= 12 V f
SW
= 1000 kHz
Figure 3-3. U2 Efficiency – 1000-kHz Switching
Frequency with Different Output Voltages
Output Current (A)
Efficiency
(%)
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6
60
65
70
75
80
85
90
95
100
f
SW
= 750 kHz
f
SW
= 1000 kHz
f
SW
= 1500 kHz
f
SW
= 2200 kHz
V
IN
= 9 V V
OUT
= 1 V
Figure 3-4. U2 Efficiency – 1-V Output with
Different Switching Frequencies
Test Setup and Results www.ti.com
12 TPS543620 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLVUBQ1A – AUGUST 2020 – REVISED MAY 2021
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