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MIC2125 Datasheet, PDF (14/34 Pages) Microchip Technology – 28V Synchronous Buck Controllers Featuring Adaptive ON-Time Control
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MIC2125/6
Note: Unless otherwise noted, VIN = 12V, FREQ = 350 kHz.
VIN = 12V
VOUT = 1.2V
I = 10A to Short
OUT
VIN = 12V
VOUT = 1.2V
I = 2A to 12A
OUT
VOUT
(500mV/div)
IL
(10A/div)
FIGURE 2-43:
Time (8ms/div)
Short-Circuit.
p
y
VIN = 12V
ILDO = 1.2V
VIN = Short to 10A
VOUT
(500mV/div)
IL
(10A/div)
FIGURE 2-44:
Short-Circuit.
p
Time (8ms/div)
Output Recovery from
y
VOUT
(500mV/div)
vin = 12V
VOUT = 1.2V
IOUT = 2.5A
vsw
(5V/div)
Time (2ms/div)
FIGURE 2-45:
Output Recovery from
Thermal Shutdown.
VOUT
(50mV/div)
(AC-Coupled)
IOUT
(10A/div)
FIGURE 2-46:
Time (100μs/div)
Transient Response.
OUT
VOUT
(20mV/div)
(AC-coupled)
VIN = 12V
VOUT = 1.2V
IOUT = 0A
VSW
(5V/div)
IL
(2A/div)
Time (8ms/div)
FIGURE 2-47:
MIC2125 Switching
Waveform, IOUT = 0A.
OUT
VOUT
(20mV/div)
(AC-coupled)
VIN = 12V
V = 1.2V
OUT
IOUT = 0.1A
VSW
(5V/div)
IL
(2A/div)
Time (4μs/div)
FIGURE 2-48:
MIC2125 Switching
Waveform, IOUT = 0.1A.
DS20005459B-page 14
 2015 Microchip Technology Inc.
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