
Single-Phase, Synchronous MOSFET Drivers
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V DD = 5V, C DH = 3nF, C DL = 3nF, T A = +25°C, unless otherwise noted.)
40
DH RISE AND FALL TIMES
vs. CAPACITIVE LOAD
40
DH AND DL RISE AND FALL TIMES
vs. TEMPERATURE
60
PACKAGE-POWER DISSIPATION
vs. PWM FREQUENCY
35
30
25
20
RISE TIME
35
30
25
DL RISE
DH RISE
50
40
30
B
A
FALL TIME
DH FALL
15
10
20
DL FALL
20
5
0
C DL = C DH
15
10
DL IS DRIVING 2 SI7336ADP
DH IS DRIVING 1 SI7892ADP
10
0
A: C DH = 3.3nF; C DL = 3.3nF
B: C DH = 1.5nF; C DL = 6.8nF
1000
2500
4000 5500 7000
8500 10,000
-40
-15
10 35 60
85
110
0
200
400 600 800 1000
1200
CAPACITANCE (pF)
PROPAGATION DELAY TIME
vs. TEMPERATURE
16
PWM FALL TO DH FALL
15
14
13
12
11
TEMPERATURE ( ° C)
V PWM
V LX
PWM FREQUENCY (kHz)
TYPICAL APPLICATION CIRCUIT
SWITCHING WAVEFORMS
MAX8791 toc08
5V/div
10V/div
10
PWM RISE TO DL FALL
V DL
5V/div
9
8
V DH
20V/div
-40
-15
10 35 60
85
110
100ns/div
TEMPERATURE ( ° C)
DH FALL AND DL RISE WAVEFORMS
MAX8791 toc09
DH RISE AND DL FALL WAVEFORMS
MAX8791 toc10
V PWM
V LX
V DL
V DH
20ns/div
5V/div
10V/div
5V/div
10V/div
V PWM
V LX
V DL
V DH
20ns/div
5V/div
10V/div
5V/div
10V/div
4
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