Datasheet

LTC3788-1
5
37881fc
TYPICAL PERFORMANCE CHARACTERISTICS
Load Step
Burst Mode Operation
Load Step
Forced Continuous Mode
Load Step
Pulse-Skipping Mode
Efficiency and Power Loss
vs Output Current
Efficiency and Power Loss
vs Output Current
Efficiency vs Input Voltage
OUTPUT CURRENT (A)
40
EFFICIENCY (%)
POWER LOSS (mW)
50
60
70
80
10
37881 G01
30
20
10
0
90
100
10
100
1000
1
0.1
10000
0.01 0.1 1
BURST EFFICIENCY
PULSE-SKIPPING
EFFICIENCY
CCM EFFICIENCY
BURST LOSS
PULSE-SKIPPING
LOSS
CCM LOSS
V
IN
= 12V
V
OUT
= 24V
FIGURE 9 CIRCUIT
OUTPUT CURRENT (A)
40
EFFICIENCY (%)
POWER LOSS (mW)
50
60
70
80
37881 G02
30
20
10
0
90
100
10
100
1000
1
0.1
10000
0.01 0.1 1 10
BURST EFFICIENCY
BURST LOSS
V
IN
= 12V
V
OUT
= 24V
Burst Mode OPERATION
FIGURE 9 CIRCUIT
0.0001 0.0010.00001
INPUT VOLTAGE (V)
0
90
EFFICIENCY (%)
92
94
96
5
10
15 20
98
100
91
93
95
97
99
25
37881 G03
V
OUT
= 12V
I
LOAD
= 2A
FIGURE 9 CIRCUIT
V
OUT
= 24V
V
OUT
500mV/DIV
INDUCTOR
CURRENT
5A/DIV
LOAD STEP
2A/DIV
V
IN
= 12V
V
OUT
= 24V
FIGURE 9 CIRCUIT
200µs/DIV
37881 G04
V
OUT
500mV/DIV
INDUCTOR
CURRENT
5A/DIV
LOAD STEP
2A/DIV
V
IN
= 12V
V
OUT
= 24V
FIGURE 9 CIRCUIT
200µs/DIV
37881 G05
V
OUT
500mV/DIV
INDUCTOR
CURRENT
5A/DIV
LOAD STEP
2A/DIV
V
IN
= 12V
V
OUT
= 24V
FIGURE 9 CIRCUIT
200µs/DIV
37881 G06