Typical operating characteristics (continued), Circuit of figure 1, v, 12v, v – Rainbow Electronics MAX1545 User Manual
Page 12: 5v, shdn = skip = v, Ofs = gnd, t, 25°c, unless otherwise specified.)
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
IN
= 12V, V
CC
= V
DD
= 5V, SHDN = SKIP = V
CC
, D0–D4 set for 1.5V (SUS = GND), S0–S1 set
for 1V (SUS = V
CC
), OFS = GND, T
A
= +25°C, unless otherwise specified.)
MAX1519/MAX1545
Dual-Phase, Quick-PWM Controllers for
Programmable CPU Core Power Supplies
12
______________________________________________________________________________________
OFFSET TRANSITION
MAX1519 toc23
0.2V
5A
5A
0V
1.5V
B
C
D
A
20
µs/div
A. V
OFS
= 0 TO 200mV, 0.2V/div
B. V
OUT
= 1.500V TO 1.475V, 20mV/div
C. I
L1
, 10A/div
D. I
L2
, 10A/div
10A LOAD
SUSPEND TRANSITION
(DUAL-PHASE PWM OPERATION)
MAX1519 toc24
3.3V
2.5A
2.5A
0V
1.5V
1.0V
B
C
D
A
40
µs/div
A. SUS, 5V/div
B. V
OUT
= 1.5V TO 1.0V, 0.5V/div
C. I
L1
, 10A/div
D. I
L2
, 10A/div
5A LOAD, SKIP = V
CC
, R
TIME
= 64.9k
Ω
SUSPEND TRANSITION
(SINGLE-PHASE SKIP OPERATION)
MAX1519 toc25
3.3V
0A
10A
0A
10A
0V
1.5V
1.0V
B
C
D
A
100
µs/div
A. SUS, 5V/div
B. V
OUT
= 1.5V TO 1.0V, 0.5V/div
C. I
L1
, 10A/div
D. I
L2
, 10A/div
5A LOAD, C
OUT
= (4) 680
µF, SKIP = SUS, R
TIME
= 64.9k
Ω
1.00V LOAD TRANSIENT
(10A TO 30A LOAD)
MAX1519 toc22
30A
0A
0A
10A
10A
10A
1.0V
B
C
D
A
20
µs/div
A. LOAD CURRENT, (I
LOAD
= 10A TO 30A), 25A/div
B. OUTPUT VOLTAGE (1.00V NO LOAD), 50mV/div
C. I
L1
, 10A/div
D. I
L2
, 10A/div