MAX17491 데이터 시트보기 (PDF) - Maxim Integrated
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MAX17491 Datasheet PDF : 12 Pages
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Single-Phase Synchronous MOSFET Driver
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VDD = VSKIP = 5V, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
DL Driver Sink Current
Zero-Crossing Threshold
Boost On-Resistance
PWM Input Levels
SYMBOL
IDL_SINK
VZX
RON(BST)
CONDITIONS
MIN
DL forced to 2.5V
GND - LX, SKIP = GND
VDD = 5V, DH = LX = GND (pulldown state), IBST = 10mA
High (DH = high, DL = low)
VDD -
0.4
Midlevel
VDD/2 -
0.4
TYP
8
1.5
5
MAX
8
UNITS
A
mV
VDD/2
V
+ 0.4
PWM Input Current
Midlevel Shutdown Hold
Time
SKIP Input Threshold
SKIP Input Current
Thermal-Shutdown
Threshold
IPWM
tMID
ISKIP
TSHDN
Low (DH = low, DL = high)
Sink; PWM forced to VDD
Source; PWM forced to GND
Rising edge
Falling edge
Sink; SKIP forced to 0.8V to VDD, TA = +25°C
Hysteresis = 20°C
0.4
-370 -200 -110
μA
110 200 370
120 300 600
ns
1.7 2.4
V
0.8 1.5
-4
-2 -0.5 μA
+160
°C
Note 1: Limits are 100% production tested at TA = +25°C. Maximum and minimum limits over temperature are guaranteed through
correlation using statistical-quality-control (SQC) methods.
Typical Operating Characteristics
(Circuit of Figure 1, VDD = 5V, CDH = 3nF, CDL = 3nF, TA = +25°C, unless otherwise noted.)
PACKAGE-POWER DISSIPATION
vs. PWM FREQUENCY
300
250
B
200
A
150
100
50
0
0
A: CDH = 3.3nF, CDL = 3.3nF
B: CDH = 1.5nF, CDL = 6.8nF
200 400 600 800 1000 1200
PWM FREQUENCY (kHz)
PACKAGE-POWER DISSIPATION
vs. CAPACITIVE LOAD ON DH AND DL
500
450
C
400
350
300
250
B
200
150
A
100
A: 300kHz
50
B: 600kHz
C: 1MHz
0
1000 2500 4000 5500 7000 8500 10,000
CAPACITANCE (pF)
DL RISE AND FALL TIMES
vs. CAPACITIVE LOAD
30
25
RISE TIME
20
15
10
FALL TIME
5
CDL = CDH
0
1000 2500 4000 5500 7000 8500 10,000
CAPACITANCE (pF)
_______________________________________________________________________________________ 3
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