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| MIC2125 Datasheet, PDF (12/34 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.
IN
FIGURE 2-31:
Efficiency (VIN = 18V) vs.
Output Current (MIC2126).
IN
VIN
(10V/div)
VSW
(10V/div)
VOUT
(2V/div)
IL
(20A/div)
FIGURE 2-32:
VIN = 12V
VOUT = 1.2V
IOUT = 20A
Time (10ms/div)
VIN Soft Turn-On.
IN
VIN
(10V/div)
VSW
(10V/div)
VOUT
(2V/div)
IL
(20A/div)
FIGURE 2-33:
VIN = 12V
VOUT = 1.2V
IOUT = 20A
Time (10ms/div)
VIN Soft Turn-Off.
VIN
(10V/div)
VSW
(10V/div)
VOUT
(500mV/div)
FIGURE 2-34:
Prebiased Output.
VIN = 12V
VOUT = 1.2V
IOUT = 0A
VPRE-BIAS = 0.5V
Time (10ms/div)
MIC2125 VIN Start-Up with
VEN
(2V/div)
VOUT
(1V/div)
IL
(20A/div)
FIGURE 2-35:
VIN = 12V
VOUT = 1.2V
IOUT = 20A
Time (10ms/div)
Enable Turn-On/Turn-Off.
y
VEN
(2V/div)
VOUT
(1V/div)
IL
(20A/div)
FIGURE 2-36:
Rise Time.
VIN = 12V
VOUT = 1.2V
IOUT = 20A
Time (4ms/div)
Enable Turn-On Delay and
DS20005459B-page 12
ï£ 2015 Microchip Technology Inc.
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