MAX1897EGP Просмотр технического описания (PDF) - Maxim Integrated
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MAX1897EGP Datasheet PDF : 33 Pages
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Quick-PWM Slave Controllers for
Multiphase, Step-Down Supplies
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V+ = 12V, VCC = VDD = 5V, VOUT = 1.3V (ZMODE = GND) and 1V (ZMODE = VCC), SHDN = VCC (MAX1897))
SWITCHING WAVEFORMS
(OUT-OF-PHASE)
MAX1887 toc14
SWITCHING WAVEFORMS
(IN-PHASE)
MAX1887 toc15
A
20mV/div
20A
B
5A/div
10V
C
0
10V/div
1µs/div
A. OUTPUT VOLTAGE, VOUT = 1.290V (NO LOAD),
B. MASTER/SLAVE INDUCTOR CURRENTS
C. MASTER/SLAVE LX WAVEFORMS,
VIN = 12.0V, IOUT = 40A, POL = VCC (MAX1897)
A
20mV/div
20A
B
5A/div
10V
0
C
10V/div
1µs/div
A. OUTPUT VOLTAGE, VOUT = 1.290V (NO LOAD),
B. MASTER/SLAVE INDUCTOR CURRENTS
C. MASTER/SLAVE LX WAVEFORMS,
VIN = 12.0V, IOUT = 40A, POL = GND (MAX1897)
40A
5A
1.282V
LOAD TRANSIENT
(OUT-OF-PHASE)
MAX1887 toc16
A
40A/div
B
50mV/div
40A
5A
1.282V
LOAD TRANSIENT
(IN-PHASE)
MAX1887 toc17
A
40A/div
B
50mV/div
C
0
10A/div
0
D
10A/div
20µs/div
A. LOAD CURRENT, IOUT = 5A TO 40A
B. OUTPUT VOLTAGE, VOUT = 1.290V (NO LOAD)
C. SLAVE INDUCTOR CURRENT
D. MASTER INDUCTOR CURRENT
VIN = 12.0V, POL = VCC (MAX1897)
C
0
10A/div
0
D
10A/div
20µs/div
A. LOAD CURRENT, IOUT = 5A TO 40A
B. OUTPUT VOLTAGE, VOUT = 1.290V (NO LOAD)
C. SLAVE INDUCTOR CURRENT
D. MASTER INDUCTOR CURRENT
VIN = 12.0V, POL = GND (MAX1897)
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