Linear Technology DC1498A, Демонстрационное руководство

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dc1780abfa
DEMO MANUAL DC1780A-B
QUICK START PROCEDURE
Figure 3. Measured Efficiency V
IN
= 5V, f
SW
= 500kHz Figure 4. Measured Efficiency V
IN
= 12V, f
SW
= 500kHz
Figure 5. Load Transient 37.5A to 75A (V
IN
= 12V, V
OUT
= 1V) Figure 6. Measured Output Voltage Ripple at 12V
IN
, 1V,
75A on J7 with Standard Demo Circuit Default Setup
LOAD CURRENT (A)
0
EFFICIENCY (%)
100
90
80
70
60
40 10
DC1780A-B F03
50 60 70 30 20
V
IN
= 5V, V
OUT
= 2.5V
V
IN
= 5V, V
OUT
= 1.8V
V
IN
= 5V, V
OUT
= 1.5V
V
IN
= 5V, V
OUT
= 1.2V
V
IN
= 5V, V
OUT
= 1V
LOAD CURRENT (A)
0
EFFICIENCY (%)
100
90
80
70
60
40 10
DC1780A-B F04
50 60 70 30 20
V
IN
= 12V, V
OUT
= 2.5V
V
IN
= 12V, V
OUT
= 1.8V
V
IN
= 12V, V
OUT
= 1.5V
V
IN
= 12V, V
OUT
= 1.2V
V
IN
= 12V, V
OUT
= 1V
DC1780A-B F05
1V OUTPUT (20MHz BW)
100mV/DIV
37.5A TO 75A LOAD
DC1780A-B F06
1V OUTPUT (20MHz BW)
20mV/DIV