MAX15112 Datasheet, PDF (8/23 Pages) Maxim Integrated Products – High-Efficiency, 12A, Current-Mode Synchronous Step-Down Regulator with Integrated Switches

MAX15112
High-Efficiency, 12A, Current-Mode Synchronous
Step-Down Regulator with Integrated Switches
Typical Operating Characteristics (continued)
(V_IN = 5V, V_OUT = 1.5V, I_LOAD = 4A, C_SS = 33nF, see the Typical Operating Circuits, T_A = +25°C, unless otherwise noted.)
SHORT-CIRCUIT HICCUP MODE
MAX15112 toc22
VOUT
1V/div
RMS INPUT CURRENT
vs. INPUT VOLTAGE (PWM)
250
230
210
190
170
IIN
5A /div
150
130
110
1ms/div
IOUT
10A /div
90
70
SHORT CIRCUIT ON OUTPUT
50
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
FEEDBACK VOLTAGE
vs. TEMPERATURE (NO LOAD, PWM)
0.606
0.605
0.604
0.603
0.602
0.601
0.600
0.599
0.598
0.597
0.596
0.595
0.594
-40 -15
10
35
60
85
TEMPERATURE (°C)
SOFT-START WAVEFORMS
(EXTERNAL REFIN, SKIP MODE)
MAX15112 toc26
VSS/REFIN
500mV/div
NO LOAD
V_OUT
1V/div
400µs/div
ILX
5A /div
VPGOOD
5V/div
SOFT-START WAVEFORMS
(EXTERNAL REFIN, PWM MODE)
MAX15112 toc25
VSS/REFIN
500mV/div
NO LOAD
V_OUT
1V/div
400µs/div
ILX
5A /div
VPGOOD
5V/div
STARTING INTO 1V PREBIASED OUTPUT
(PWM, I_OUT = 4A)
MAX15112 toc27
V_EN
5V/div
V_OUT
500mV/div
1V
I_LX
5A /div
400µs/div
V_PGOOD
5V/div
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