Linear ANALOG DEVICES DC2543B Demo Manual page 4

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