LTC3730_15 Datasheet, PDF (7/28 Pages) Linear Technology – 3-Phase, 5-Bit Intel Mobile VID, 600kHz, Synchronous Buck Controller

TYPICAL PERFOR A CE CHARACTERISTICS
LTC3730
Operational Amplifier Gain-Phase
60
50
40
30
20
10
0
+
IN
–
1k
100µF 100k 5k
0
–30
–60
–90
–120
–150
0.1
1
10
100
1000
FREQUENCY (kHz)
3730 G19
Shed Mode at 1Amp, Light Load
Current (Circuit of Figure 14)
Burst Mode at 1Amp, Light Load
Current (Circuit of Figure 14)
V_OUT
AC, 20mV/DIV
V_SW1
10V/DIV
V_SW2
10V/DIV
V_SW3
10V/DIV
V_IN = 12V
4µs/DIV
V_OUT = 1.5V
V_FCB = V_CC
FREQUENCY = 250kHz
3730 G20
Continuous Mode at 1Amp, Light
Load Current (Circuit of Figure 14)
V_OUT
AC, 20mV/DIV
V_SW1
10V/DIV
V_SW2
10V/DIV
V_SW3
10V/DIV
V_IN = 12V
4µs/DIV
V_OUT = 1.5V
V_FCB = 0V
FREQUENCY = 250kHz
3730 G22
V_OUT
AC, 20mV/DIV
V_SW1
10V/DIV
V_SW2
10V/DIV
V_SW3
10V/DIV
V_IN = 12V
4µs/DIV
V_OUT = 1.5V
V_FCB = OPEN
FREQUENCY = 250kHz
3730 G21
Transient Load Current Response: 0Amp
to 50Amp (Circuit of Figure 14)
V_OUT
AC, 20mV/DIV
I_LOAD
20A/DIV
V_IN = 12V
20µs/DIV
V_OUT = 1.5V
V_FCB = V_CC
FREQUENCY = 250kHz
3730 G23
3730fa
7