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LM46000PWP bảng dữ liệu(PDF) 11 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  LM46000 SIMPLE SWITCHER짰 3.5 V to 60 V 0.5 A Synchronous Step-Down Voltage Converter
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LM46000PWP bảng dữ liệu(HTML) 11 Page - Texas Instruments

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Quasi Peak Limit
Average Limit
Frequency (MHz)
dBuV
100
90
80
70
60
50
40
30
20
10
0.15
1
10
30
Measured Peak Emissions
Quasi Peak Limit
Average Limit
Frequency (MHz)
dBuV
100
90
80
70
60
50
40
30
20
10
0.15
1
10
30
Measured Peak Emissions
EN 55022 Class B Limit
Frequency (MHz)
dBuV
80
70
60
50
40
30
20
10
30
Evaluation Board Emissions
1000
100
Vertical Polarization
Horizontal Polarization
EN 55022 Class B Limit
Frequency (MHz)
dBuV
80
70
60
50
40
30
20
10
30
Evaluation Board Emissions
1000
100
Vertical Polarization
Horizontal Polarization
10000
100000
1000000
3.4
3.6
3.8
4.0
4.2
4.4
4.6
4.8
5.0
VIN (V)
Load = 0.01 A
Load = 0.1 A
Load = 0.5 A
C001
10000
100000
1000000
5.0
5.2
5.4
5.6
5.8
6.0
6.2
6.4
6.6
6.8
7.0
VIN (V)
Load = 0.01 A
Load = 0.1 A
Load = 0.5 A
C001
LM46000
www.ti.com
SNVSA45A – JUNE 2014 – REVISED JULY 2014
Typical Characteristics (continued)
Unless otherwise specified, VIN = 24 V, VOUT = 3.3 V, FS = 500 kHz, L = 27 µH, COUT = 100 µF, CFF = 33 pF. Please refer to
Application Performance Curves for Bill of Materials (BOM) for other VOUT and FS combinations.
VOUT = 3.3 V
FS = 500 kHz
VOUT = 5 V
FS = 1 MHz
Figure 19. Switching Frequency vs VIN in Drop-Out
Figure 20. Switching Frequency vs VIN in Drop-Out
Operation
Operation
VOUT = 3.3 V
FS = 500 kHz
IOUT = 0.5 A
VOUT = 5 V
FS = 500 kHz
IOUT = 0.5 A
Measured on the LM46000PWPEVM with default BOM. No input
Measured on the LM46000PWPEVM with L = 44 µH, COUT = 66
filter used.
µF, CFF = 33 pF. No input filter used.
Figure 21. Radiated EMI Curve
Figure 22. Radiated EMI Curve
VOUT = 3.3 V
FS = 500 kHz
IOUT = 0.5 A
VOUT = 5 V
FS = 500 kHz
IOUT = 0.5 A
Measured on the LM46000PWPEVM with default BOM. EVM input
Measured on the LM46000PWPEVM with L = 44 µH, COUT = 66
filter: Lin = 1 µH Cd = 47 µF CIN4 = 68 µF
µF, CFF = 33 pF. EVM input filter Lin = 1 µH Cd = 47 µF CIN4 = 68
µF
Figure 23. Conducted EMI Curve
Figure 24. Conducted EMI Curve
Copyright © 2014, Texas Instruments Incorporated
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