Analog Devices Linear DC2543B, Демонстрационное руководство

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4
DEMO MANUAL DC2543B
Rev. 0
QUICK START PROCEDURE
Figure 3. Efficiency vs Load Current at V
IN
= 48V,
V
OUT
= 24V, f
SW
= 200kHz
OUTPUT LOAD CURRENT (A)
0
90
EFFICIENCY (%)
92
94
100
98
96
2 4 6 8 10
DC2543B F03
OUTPUT LOAD CURRENT (A)
0
23.0
23.2
23.4
23.6
V
OUT
(V)
23.8
24.0
24.6
24.4
24.2
2 4 6 8 10
DC2543B F04
Figure 4. Load Regulation for 10A Design
at V
IN
= 48V, V
OUT
= 24V, f
SW
= 200kHz
Figure 5. Output Voltage Ripple at V
IN
= 48V,
V
OUT
= 24V, I
OUT
= 10A, f
SW
= 200kHz
Figure 6. Load Step at V
IN
= 48V, V
OUT
= 24V
2µs/DIV
V
OUT
RIPPLE
20MHz BW
500mV/DIV
DC2543B F05
100µs/DIV
0A-5A-0A
LOAD STEP
V
OUT
20MHz BW
500mV/DIV
DC2543B F06
Figure 7. Thermal performance V
IN
= 48V, V
OUT
= 24V, I
OUT
= 10A,
T
A
= 23°C, No Airflow
Q1 Q3
Q6
Q7