MAX15062 Datasheet, PDF (12/23 Pages) Maxim Integrated Products – Step-Down DC-DC Converters

MAX15062
60V, 300mA, Ultra-Small, High-Efficiency,
Synchronous Step-Down DC-DC Converters
Typical Operating Characteristicsc (continued)
(V_IN = 24V, V_GND = 0V, C_IN = C_VCC = 1µF, V_EN/UVLO = 1.5V, T_A = +25°C, unless otherwise noted.)
VEN / UVLO
5V/div
V_OUT
1V/div
V_RESET
5V/div
SOFT-START WITH 3V PREBIAS
MAX15062 toc32
FIGURE 6
APPLICATION CIRCUIT
NO LOAD
PWM MODE
1ms /div
BODE PLOT
50
MAX15062 toc34
180
40
144
GAIN
30
108
PHASE
20
72
10
36
0
0
-10
fCR = 47kHz,
PHASE MARGIN = 59°
-36
-20
-72
-30
FIGURE 5 APPLICATION CIRCUIT _-108
-40
VOUT = 3.3V
-144
-50
2 4 681 2 4 681 2
-180
1k
10k
100k
FREQUENCY (Hz)
BODE PLOT
50
MAX15062 toc35a
180
40
GAIN
144
30
108
20
72
PHASE
10
36
0
fCR = 43kHz,
0
-10 ^{PHASE MARGIN = 60°}
-36
-20
-72
-30
FIGURE 7 APPLICATION CIRCUIT
-108
VOUT = 2.5V
-40
-144
-50
1k
-180
10k
100k
FREQUENCY (Hz)
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VIN
20V/div
V_OUT
2V/div
OVERLOAD PROTECTION
MAX15062 toc33
IOUT
200mA /div
20ms /div
BODE PLOT
50
MAX15062 toc35
180
40
144
GAIN
30
108
PHASE
20
72
10
36
0
0
-10
fCR = 47kHz,
PHASE MARGIN = 60°
-36
-20
-72
-30
FIGURE 6 APPLICATION CIRCUIT _-108
-40
VOUT = 5V
-144
-50
2 4 681 2 4 681 2
-180
1k
10k
100k
FREQUENCY (Hz)
BODE PLOT
50
MAX15062 toc35b
180
40
144
30
GAIN
108
20
PHASE
72
10
36
0
0
fCR = 36kHz,
-10 PHASE MARGIN = 66°
-36
-20
-72
-30
FIGURE 8 APPLICATION CIRCUIT
-108
-40
VOUT = 12V
-144
-50
1k
-180
10k
100k
FREQUENCY (Hz)
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