Datasheet

ADP1851 Data Sheet
Rev. 0 | Page 10 of 24
Figure 10. Synchronization, f
SYNC
= 600 kHz
Figure 11. Dead Time vs. Temperature
Figure 12. Typical DH Minimum On Time and Off Time
Figure 13. Soft Start with Precharged Output, 1.8 V
OUT
Forced PWM Mode
Figure 14. Dead Time vs. V
IN
Figure 15. Driver Resistance vs. Temperature
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
10595-010
25
35
34
33
32
31
30
29
28
27
26
–40 –20 0 20 40 60 80 100 120 140
DEAD TIME (ns)
TEMPERATURE (°C)
V
IN
= 12V
OUTPUT IS LOADED
HS FET = BSC080N03LS
LS FET = BSC030N03LS
DEAD TIME BETWEEN SW FALLING EDGE
AND DL RISING EDGE, INCLUDING DIODE RECOVERY TIME
10595-011
50
100
150
200
250
300
350
2.5 5.0 7.5 10.0 12.5 15.0 17.5 20.0
TIME (ns)
DH MINIMUM OFF TIME
DH MINIMUM ON TIME
V
IN
(V)
10595-012
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
10595-013
25
45
43
41
39
37
35
33
31
29
27
0 2015105
DEAD TIME (ns)
V
IN
(V)
T
A
= 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
10595-014
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
DRIVER RESISTANCE (Ω)
TEMPERATURE (°C)
V
IN
= 2.75V, SOURCING
V
IN
= 12V, SOURCING
V
IN
= 2.75V, SINKING
V
IN
= 12V, SINKING
10595-036