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| LTC3811_15 Datasheet, PDF (10/48 Pages) Linear Technology – High Speed Dual, Multiphase Step-Down DC/DC Controller | |||
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LTC3811
TYPICAL PERFORMANCE CHARACTERISTICS
Top Gate Turn-On Waveform
Driving Renesas RJK0305DPB
Top Gate Turn-Off Waveform
Driving Renesas RJK0305DPB
2V/DIV
TG â SW
2V/DIV
TG â SW
Bottom Gate Turn-On Waveform
Driving Renesas RJK0301DPB
2V/DIV
VIN = 12V
VOUT = 1.5V
IOUT = 5A
10ns/DIV
3811 G37
VIN = 12V
VOUT = 1.5V
IOUT = 5A
10ns/DIV
3811 G38
VIN = 12V
VOUT = 1.5V
IOUT = 5A
25ns/DIV
3811 G39
Bottom Gate Turn-Off Waveform
Driving Renesas RJK0301DPB
Single Output, 2-Phase Current
Sharing Waveforms
Start-Up Into a Pre-Biased
Output Capacitor
2V/DIV
VIN = 12V
VOUT = 1.5V
IOUT = 5A
25ns/DIV
IL
5A/DIV
3811 G40
SW1
10V/DIV
SW2
10V/DIV
VIN = 12V
VOUT = 1.5V
IOUT = 16A
1μs/DIV
1V/DIV
1V
PRE BIAS
OV
3811 G41
VOUT = 3.3V
500μs/DIV
3811 G42
Sequenced Start-Up
Ratiometric Tracking Start-Up
Coincident Tracking Start-Up
RUN1
2V/DIV
RUN2
5V/DIV
VOUT1 = 2V
500mV/DIV
VOUT1 = 2V
VOUT2 = 1.5V
500mV/DIV
500mV/DIV
VOUT2 = 1.5V
VIN = 12V
10ms/DIV
RLOAD1 = RLOAD2 = 1.5Ω
RUN2 CONNECTED TO PGOOD1
3811 G43
VIN = 12V
5ms/DIV
RLOAD1 = RLOAD2 = 1.5Ω
3811 G44
5ms/DIV
3811 G45
3811f
10
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