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ADP1851ACPZ-R7 Arkusz danych(PDF) 10 Page - Analog Devices

Numer części ADP1851ACPZ-R7
Szczegółowy opis  Wide Range Input, Synchronous, Step-Down DC-to-DC Controller
PDF  24 Pages
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Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

ADP1851ACPZ-R7 Arkusz danych(HTML) 10 Page - Analog Devices

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ADP1851
Data Sheet
Rev. B | Page 10 of 24
M 1.0µs 250MS/s
4ns/pt
A CH1
3.1V
B
W
B
W
3
4
CH1 5V
CH3 10V
B
W
CH4 5V
SYNC
DH
DL
1
Figure 10. Synchronization, fSYNC = 600 kHz
25
35
34
33
32
31
30
29
28
27
26
–40
–20
0
20406080
100
120
140
TEMPERATURE (°C)
VIN = 12V
OUTPUT IS LOADED
HS FET = BSC080N03LS
LS FET = BSC030N03LS
DEAD TIME BETWEEN SW FALLING EDGE
AND DL RISING EDGE, INCLUDING DIODE RECOVERY TIME
Figure 11. Dead Time vs. Temperature
50
100
150
200
250
300
350
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
DH MINIMUM OFF TIME
DH MINIMUM ON TIME
VIN (V)
Figure 12. Typical DH Minimum On Time and Off Time
M 2ms 250kS/s
4µs/pt
A CH1
580mV
B
W
B
W
B
W
2
3
1
CH1 1V
CH2 500mV
CH3 10V
EN
SW
VOUT
Figure 13. Soft Start with Precharged Output, 1.8 VOUT Forced PWM Mode
25
45
43
41
39
37
35
33
31
29
27
020
15
10
5
VIN (V)
TA = 25°C
OUTPUT IS LOADED
HS FET = BSC080N03LS
LS FET = BSC030N03LS
DEAD TIME BETWEEN SW FALLING EDGE
AND DL RISING EDGE, INCLUDING DIODE RECOVERY TIME
Figure 14. Dead Time vs. VIN
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
–40
–15
10
35
60
85
110
135
TEMPERATURE (°C)
VIN = 2.75V, SOURCING
VIN = 12V, SOURCING
VIN = 2.75V, SINKING
VIN = 12V, SINKING
Figure 15. Driver Resistance vs. Temperature



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