LTC3788EUHPBF Просмотр технического описания (PDF) - Linear Technology
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LTC3788EUHPBF Datasheet PDF : 32 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LTC3788
Efficiency and Power Loss
vs Output Current
100
10000
90
80
1000
70
60
100
50
40
10
30
20
10
0
0.01
VIN = 12V
1
VOUT = 24V
FIGURE 9 CIRCUIT
0.1
0.1
1
10
OUTPUT CURRENT (A)
BURST EFFICIENCY
PULSE-SKIPPING
EFFICIENCY
CCM EFFICIENCY
3788 G01
BURST LOSS
PULSE-SKIPPING
LOSS
CCM LOSS
Efficiency vs Input Voltage
100
ILOAD = 2A
99 FIGURE 9 CIRCUIT
98
97 VOUT = 12V
96
VOUT = 24V
95
94
93
92
91
90
0
5
10
15
20
INPUT VOLTAGE (V)
25
3788 G03
Load Step
Burst Mode Operation
Efficiency and Power Loss
vs Output Current
100
10000
90
80
1000
70
60
100
50
40
10
30
20
10
0
0.00001 0.0001 0.001
VIN = 12V
1
VOUT = 24V
Burst Mode OPERATION
FIGURE 9 CIRCUIT
0.1
0.01 0.1 1 10
OUTPUT CURRENT (A)
BURST EFFICIENCY
BURST LOSS
3788 G02
Load Step
Forced Continuous Mode
LOAD STEP
2A/DIV
INDUCTOR
CURRENT
5A/DIV
VOUT
500mV/DIV
VIN = 12V
200μs/DIV
VOUT = 24V
FIGURE 9 CIRCUIT
Load Step
Pulse-Skipping Mode
3788 G04
LOAD STEP
2A/DIV
INDUCTOR
CURRENT
5A/DIV
VOUT
500mV/DIV
LOAD STEP
2A/DIV
INDUCTOR
CURRENT
5A/DIV
VOUT
500mV/DIV
VIN = 12V
200μs/DIV
VOUT = 24V
FIGURE 9 CIRCUIT
3788 G05
VIN = 12V
200μs/DIV
VOUT = 24V
FIGURE 9 CIRCUIT
3788 G06
3788f
5
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