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| MAX1519 Datasheet, PDF (11/43 Pages) Maxim Integrated Products – Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies | |||
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Dual-Phase, Quick-PWM Controllers for
Programmable CPU Core Power Supplies
Typical Operating Characteristics (continued)
(Circuit of Figure 1, VIN = 12V, VCC = VDD = 5V, SHDN = SKIP = VCC, D0âD4 set for 1.5V (SUS = GND), S0âS1 set
for 1V (SUS = VCC), OFS = GND, TA = +25°C, unless otherwise specified.)
POWER-UP SEQUENCE
MAX1519 toc18
5V
A
0V
2V
1V
B
0V
5V
C
0V
1ms/div
A. SHDN, 5V/div
B. 1.5V OUTPUT, 1V/div
C. VROK, 5V/div
RTIME = 64.9kâ¦
SOFT-START
MAX1519 toc19
5V
A
0V
1.5V
B
0V
10A
C
0A
D
0A
100µs/div
A. SHDN, 5V/div
B. 1.5V OUTPUT, 1V/div
C. IL1, 10A/div
D. IL2, 10A/div
RLOAD = 75mâ¦, RTIME = 64.9kâ¦
SOFT-SHUTDOWN
MAX1519 toc20
5V
A
0V
1.5V
B
0V
10A
C
10A
0A
D
200µs/div
A. SHDN, 5V/div
B. 1.5V OUTPUT, 1V/div
C. IL1, 10A/div
D. IL2, 10A/div
RLOAD = 75mâ¦, RTIME = 64.9kâ¦
1.50V LOAD TRANSIENT
(10A TO 50A LOAD)
MAX1519 toc21
50A
A
10A
1.5V
B
20A
20A
0A
C
0A
D
20µs/div
A. LOAD CURRENT, (ILOAD = 10A TO 50A), 50A/div
B. OUTPUT VOLTAGE (1.5V NO LOAD), 100mV/div
C. IL1, 10A/div
D. IL2, 10A/div
______________________________________________________________________________________ 11
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