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MIC2128 Datasheet, PDF (9/32 Pages) Microchip Technology – 75V, Synchronous Buck Controller Featuring Adaptive On-Time Control with External Soft Start
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MIC2128
Note: Unless otherwise indicated, VVIN = 12V, fSW = 300 kHz, RILIM = 1.5 k, L = 10 µH, VEXTVDD = VOUT, TA = +25°C
(refer to the Typical Application circuit).
100
90
80
70
VVOOUUTT==5V
60
VVOOUUTT==3.3V
50
VVOOUUTT==2.5V
40
VVOOUUTT==1.8V
30
VVOOUUTT==1.5V
20
VVOOUUTT==1.2V
10
0
VVOOUUTT==1.0V
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Current (A)
FIGURE 2-19:
Efficiency vs. Output
Current (Input Voltage=12V).
100
90
80
70
60
VOOUUTT==5V
50
VOOUUTT==3.3V
40
VOOUUTT==2.5V
30
VVOOUUTT==11..88VV
20
VOOUUTT==1.5V
10
VOOUUTT==1.2V
0
VOOUUTT==1.V0V
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Current (A)
FIGURE 2-22:
Efficiency vs. Output
Current (Input Voltage = 48V).
100
90
80
70
VOOUUT T==55VV
60
VOOUUT T==33..33VV
50
VOOUUT T==22..55VV
40
VOOUUT T==11..88VV
30
20
10
0
VOOUUT T==11..55VV
VVOOUUT T==11..22VV
VVOOUUT T==11..00VV
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Current (A)
FIGURE 2-20:
Efficiency vs. Output
Current (Input Voltage = 24V).
100
90
80
70
60
50
VOOUUT T==55VV
40
VOOUUT T==33..33VV
VOOUUT T==22..55VV
30
VOOUUT T==11..88VV
20
VOOUUT T==11..55VV
10
VOOUUT T==11..22VV
0
VOOUUT T==11..00VV
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Current (A)
FIGURE 2-23:
Efficiency vs. Output
Current (Input Voltage = 60V).
100
90
80
70
60
VVOOUUTT==5V
50
VVOOUUTT==3.3V
40
VVOOUUTT==2.5V
30
20
10
0
VVOOUUTT==11..88VV
VVOOUUTT==11..55VV
VVOOUUTT==11..22VV
VVOOUUTT==11..00VV
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Current (A)
FIGURE 2-21:
Efficiency vs. Output
Current (Input Voltage = 36V).
100
90
80
70
60
50
VVOOUUTT==5V
40
VVOOUUTT==3.3V
VVOOUUTT==2.5V
30
VVOOUUTT==1.8V
20
VVOOUUTT==1.5V
10
VVOOUUTT==1.2V
0
VVOOUUTT==1.0V
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Output Current (A)
FIGURE 2-24:
Efficiency vs. Output
Current (Input Voltage = 75V).
 2016 Microchip Technology Inc.
DS20005620A-page 9
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