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ADP1874ARQZ-0.6-R7 Arkusz danych(PDF) 8 Page - Analog Devices

Numer części ADP1874ARQZ-0.6-R7
Szczegółowy opis  Synchronous Buck Controller with Constant On-Time and Valley Current Mode
Download  44 Pages
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ADP1874ARQZ-0.6-R7 Arkusz danych(HTML) 8 Page - Analog Devices

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ADP1874/ADP1875
Rev. 0 | Page 8 of 44
TYPICAL PERFORMANCE CHARACTERISTICS
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5
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1k
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100k
LOAD CURRENT (mA)
TA = 25°C
VOUT = 0.8V
fSW = 300kHz
WÜRTH INDUCTOR:
744325072, L = 0.72µH, DCR = 1.3mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 13V (PSM)
VIN = 16.5V (PSM)
VIN = 13V
VIN = 16.5V
Figure 4. Efficiency—300 kHz, VOUT = 0.8 V
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0
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100
1k
10k
100k
LOAD CURRENT (mA)
TA = 25°C
VOUT = 1.8V
fSW = 300kHz
WÜRTH INDUCTOR:
744325120, L = 1.2µH, DCR = 1.8mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 5V (PSM)
VIN = 13V (PSM)
VIN = 16.5V (PSM)
VIN = 13V
VIN = 16.5V
Figure 5. Efficiency—300 kHz, VOUT = 1.8 V
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1k
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LOAD CURRENT (mA)
TA = 25°C
VOUT = 7V
fSW = 300kHz
WÜRTH INDUCTOR:
7443551200, L = 2.0µH, DCR = 2.6mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 13V (PSM)
VIN = 16.5V (PSM)
VIN = 13V
VIN = 16.5V
Figure 6. Efficiency—300 kHz, VOUT = 7 V
100
95
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85
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55
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5
0
10
100
1k
10k
100k
LOAD CURRENT (mA)
TA = 25°C
VOUT = 0.8V
fSW = 600kHz
WÜRTH INDUCTOR:
744355147, L = 0.47µH, DCR = 0.67mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 13V (PSM)
VIN = 16.5V
(PSM)
VIN = 13V
VIN = 16.5V
Figure 7. Efficiency—600 kHz, VOUT = 0.8 V
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
10
100
1k
10k
100k
LOAD CURRENT (mA)
TA = 25°C
VOUT = 1.8V
fSW = 600kHz
WÜRTH INDUCTOR:
744325072, L = 0.72µH, DCR = 1.3mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 13V (PSM)
VIN = 16.5V (PSM)
VIN = 13V
VIN = 16.5V
Figure 8. Efficiency—600 kHz, VOUT = 1.8 V
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
10
100
1k
10k
100k
LOAD CURRENT (mA)
TA = 25°C
VOUT = 5V
fSW = 600kHz
WÜRTH INDUCTOR:
744318180, L = 1.4µH, DCR = 3.2mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
VIN = 20V (PSM)
VIN = 13V (PSM)
VIN = 16.5V (PSM)
VIN = 20V
VIN = 16.5V
Figure 9. Efficiency—600 kHz, VOUT = 5 V


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