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| LTC3860_15 Datasheet, PDF (7/36 Pages) Linear Technology – Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Current Sharing | |||
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TYPICAL PERFORMANCE CHARACTERISTICS
LTC3860
Soft-Start Start-Up
VOUT1
200mV/DIV
VIN = 12V
5ms/DIV
VOUT1 = 1.2V
0.1μF CAPACITOR ON TRACK/SS1
3860 G12
Ratiometric Tracking Start-Up
TRACK/SS1
500mV/DIV
VOUT1
500mV/DIV
2μs/DIV
3860 G13
CHANNEL 1 TRACKING OFF PULSE GENERATOR
Coincident Tracking Start-Up
TRACK/SS1
500mV/DIV
VOUT1
500mV/DIV
2μs/DIV
3860 G14
CHANNEL 1 TRACKING OFF PULSE GENERATOR
Line Step Transient Response
(2-Phase)
VOUT
50mV/DIV
IL1
5A/DIV
IL2
5A/DIV
VIN
5V/DIV
COMP1
100mV/DIV
VIN = 12V
20μs/DIV
VOUT = 1.8V
VIN STEP = 7V TO 14V
3860 G15
Line Step Transient Response
(2-Phase)
VOUT
50mV/DIV
IL1
5A/DIV
IL2
5A/DIV
VIN
5V/DIV
COMP1
100mV/DIV
VIN = 12V
20μs/DIV
VOUT = 1.2V
VIN STEP = 7V TO 14V
3860 G16
Line Step Transient Response
(Single Phase)
VOUT
50mV/DIV
IL
2A/DIV
VIN
5V/DIV
COMP1
100mV/DIV
20μs/DIV
VOUT = 1.2V
VIN STEP = 7V TO 14V
3860 G17
3860fc
7
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