MAX1980 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1980
Maxim Integrated
MAX1980 Datasheet PDF : 33 Pages
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Quick-PWM Slave Controller with
Driver Disable for Multiphase DC-DC Converter
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V+ = 12V, VCC = VDD = 5V, VOUT = 1.3V (ZMODE = GND) and 1V (ZMODE = VCC), DD = VCC.)
OFFSET-VOLTAGE DEVIATION
vs. COMPENSATION VOLTAGE
0.3
OUT = CM+ = CM- = CS+ = CS-
0.2
0.1
0
-0.1
-0.2
-0.3
0
0.5
1.0
1.5
2.0
VCOMP (V)
COMPENSATION OUTPUT CURRENT
vs. CURRENT-SENSE VOLTAGE DIFFERENTIAL
100
80
OUT = CM+ = CM- = CS-
ICOMP = GM(VCS+ - VCS-)
60
40
20
0
-20
-40
-60
-80
-100
-150 -100
-50 0 50
VCS+ - VCS- (V)
100 150
MINIMUM TRIGGER PULSE WIDTH
vs. OVERDRIVE VOLTAGE
500
450
400
ON-TIME TRIGGERED
ABOVE THE LINE
350
300
RISING (OUT-OF-PHASE)
250
200
150
FALLING (IN-PHASE)
100
50
0
0
0.5
1.0
1.5
2.0
OVERDRIVE VOLTAGE (V)
500
450
400
350
300
250
200
150
100
50
0
0
TRIGGER PROPAGATION DELAY
vs. OVERDRIVE VOLTAGE
RISING (OUT-OF-PHASE)
FALLING (IN-PHASE)
0.5
1.0
1.5
2.0
OVERDRIVE VOLTAGE (V)
DRIVER-ENABLE DELAY TIME
MAX1980 toc16
POSITIVE CURRENT-LIMIT THRESHOLD
vs. ILIM VOLTAGE
160
140
120
100
80
60
MASTER OR SLAVE
40
20
0
0
0.5
1.0
1.5
VILIM (V)
ENTERING LOW-POWER OPERATION
MAX1980 toc17
DRIVER-DISABLE DELAY TIME
MAX1980 toc15
5V
0
A
B
0
0
C
A. DD = 5V to 0, 5V/div C. MAX1718 LX, 5V/div
B. MAX1980 LX, 5V/div NO LOAD
EXITING LOW-POWER OPERATION
MAX1980 toc18
5V
A
A
0
0
0
A
1.3V
1.3V
B
B
1.0V
1.0V
C
C
B
0
0
0
0
C
D
D
0
0
A. DD = 0 to 5V, 5V/div C. MAX1718 LX, 5V/div
B. MAX1980 LX, 5V/div NO LOAD
40µs/div
A. LOWPWR = 0 TO 5V, 5V/div
B. VOUT = 1.3V TO 1.0V, 200mV/div
C. MAX1980 LX, 10V/div
D. MAX1718 LX, 10V/div
ZMODE = LOWPWR
20µs/div
A. LOWPWR = 5V TO 0, 5V/div
B. VOUT = 1.0V TO 1.3V, 200mV/div
C. MAX1980 LX, 10V/div
D. MAX1718 LX, 10V/div
ZMODE = LOWPWR
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