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LTM8049 データシート(PDF) 20 Page - Linear Technology

部品番号 LTM8049
部品情報  EN55022B Compliant 58V, 24W Inverting-Output DC/DC 關Module Regulator
PDF  34 Pages
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メーカー  LINER [Linear Technology]
ホームページ  http://www.linear.com
Logo LINER - Linear Technology

LTM8049 データシート(HTML) 20 Page - Linear Technology

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LTM4651
20
4651f
For more information www.linear.com/LTM4651
APPLICATIONS INFORMATION
Figure 4. Normalized Input RMS Ripple Current vs Duty Cycle for One to Six LTM4651s (Phases)
Figure 6. Radiated Emissions Scan of the LTM4651 Producing
–24VOUT at 2A, from 25VIN. DC2328 Hardware. fSW = 1.2MHz.
Measured in a 10m Chamber. Peak Detect Method
Figure 5. Radiated Emissions Scan of the LTM4651. Producing
–24VOUT at 1A, from 12VIN. DC2328A Hardware. fSW = 1.2MHz.
Measured in a 10m Chamber. Peak Detect Method
0.75 0.8
4651 F04
0.7
0.65
0.6
0.55
0.5
0.45
0.4
0.35
0.3
0.25
0.2
0.15
0.1
0.85 0.9
DUTY CYCLE (–VOUT– / VIN – VOUT–)
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
1-PHASE
2-PHASE
3-PHASE
4-PHASE
6-PHASE
Figure 8. Radiated Emissions Scan of the LTM4651. Producing
–12VOUT at 2A, from 12VIN. DC2328A Hardware. fSW = 700kHz.
Measured in a 10m Chamber. Peak Detect Method
Figure 7. Radiated Emissions Scan of the LTM4651. Producing
–24VOUT at 2A, from 34VIN. DC2328A Hardware. fSW = 1.2MHz.
Measured in a 10m Chamber. Peak Detect Method
50
60
70
40
30
20
10
–10
0
FREQUENCY (MHz)
30
830
130
230
330
430
530
630
730
930 1000
4651 F05
[1] HORIZONTAL
[2] VERTICAL
QPK LIMIT
FORMAL
MEAS DIST 10m
SPEC DIST 10m
+
50
60
70
40
30
20
10
–10
0
FREQUENCY (MHz)
30
830
130
230
330
430
530
630
730
930 1000
4651 F06
[1] HORIZONTAL
[2] VERTICAL
QPK LIMIT
FORMAL
MEAS DIST 10m
SPEC DIST 10m
+
50
60
70
40
30
20
10
–10
0
FREQUENCY (MHz)
30
830
130
230
330
430
530
630
730
930 1000
4651 F07
[1] HORIZONTAL
[2] VERTICAL
QPK LIMIT
FORMAL
MEAS DIST 10m
SPEC DIST 10m
+
50
60
70
40
30
20
10
–10
0
FREQUENCY (MHz)
30
830
130
230
330
430
530
630
730
930 1000
4651 F08
[1] HORIZONTAL
[2] VERTICAL
QPK LIMIT
FORMAL
MEAS DIST 10m
SPEC DIST 10m
+



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