MIC28512 Datasheet, PDF (9/34 Pages) Microchip Technology – 70V, 2A Synchronous Buck Regulator

MIC28512
100
90
80
5.0V
3.3V
70
60
50
40
30
20
FSW= 300kHz
10
0.01
0.1
1
10
OUTPUT CURRENT (A)
FIGURE 2-13:
Efficiency (VIN = 48V) vs.
Output Current MIC28512-1.
20.0
18.0
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
VIFOSOUWU===TT3050AV0kHz
0.0
5 10 15 20 25 30 35 40 45 50 55 60 65 70
INPUT VOLTAGE (V)
FIGURE 2-14:
VIN Operating Supply
Current vs. Input Voltage MIC28512-2.
0.812
0.808
VVI_OOINUUTT^===1052A.V0V
0.804
0.800
0.796
0.792
-50 -25 0 25 50 75 100 125
TEMPERATURE (°C)
FIGURE 2-15:
Feedback Voltage vs.
Temperature MIC28512-2
5.2
5.1
5.0
4.9
4.8
0.0
VIN= 12V
VOU=T 5V
0.5
1.0
1.5
2.0
OUTPUT CURRENT (A)
FIGURE 2-16:
Output Voltage vs. Output
Current MIC28512-2.
100
90
80
70
60
50
40
30
20
10
0.01
5.0V
3.3V
F_SW= 300kHz
0.1
1
10
OUTPUT CURRENT (A)
FIGURE 2-17:
Efficiency (VIN = 12V) vs.
Output Current MIC28512-2.
100
90
5.0V
80
3.3V
70
60
50
40
30
20
F_SW = 300kHz
10
0.01
0.1
1
10
OUTPUT CURRENT (A)
FIGURE 2-18:
Efficiency (VIN = 24V) vs.
Output Current MIC28512-2.
 2016 Microchip Technology Inc.
DS20005524A-page 9