LTC3861-1
典型应用
双输出转换器：三阶段+单相的DrMOS ，
同步至一个500kHz的外部时钟
SS1
V
IN
7V至14V
V
CC
5V
3.3nF
280
20k
3.48k
150pF
30.1k
V
OUT1
3.3nF
100pF
V
CC
1F
100k
RUN1
RUN1
ILIM1
SGND
ISNS1P
ISNS1N
ISNS2N
ISNS2P
SGND
ILIM2
RUN2
V
CC
53.6k
1
2.2F
16V
V
IN
0.22F
C
IN2
22F × 2
10k
16V
BOOT
相
FDMF6707B
V
IN
VSWH
DISB
PWM
保护地
VDRV
VCIN
SMOD
CGND
10k
0.22F
V
OUT1
1V / 75A
0.22F
C
OUT1
100F × 6
6.3V
C
OUT2
330F
×6
2.5V
L1
0.47H
2.87k
C
IN1
180F
0.1F
FB1
COMP1
VSNSP
VSNSN
VCC
SS1
VINSNS
CONFIG
IAVG
PGOOD1
PWMEN1
PWM1
2.2F
16V
SS2
频率
CLKIN
CLKOUT
PHSMD
PGOOD2
PWMEN2
PWM2
V
CC
VSNSOUT
COMP2
FB2
LTC3861-1
V
CC
V
IN
0.22F
C
IN3
22F × 2
10k
16V
BOOT
相
FDMF6707B
V
VSWH
DISB
PWM
保护地
VDRV
VCIN
SMOD
CGND
10k
IN
CLKIN
500kHz的外部
SYNC输入
SS1
34k
RUN1
V
CC
1
2.2F
16V
2.87k
L2
0.47H
2.2F
16V
V
IN
V
CC
5V
0.22F
C
IN4
22F × 2
10k
16V
BOOT
相
FDMF6707B
V
IN
VSWH
DISB
PWM
保护地
VDRV
VCIN
SMOD
CGND
10k
0.22F
L3
0.47H
2.87k
1F
V
IN
V
CC
FB1
COMP1
VSNSP
VSNSN
SS1
RUN1
RUN1
ILIM1
SGND
ISNS1P
ISNS1N
ISNS2N
ISNS2P
SGND
ILIM2
RUN2
RUN2
0.1F
34k 100k
V
CC
V
CC
1
2.2F
16V
V
CC
53.6k
1
2.2F
16V
VCC
SS1
VINSNS
CONFIG
IAVG
PGOOD1
PWMEN1
PWM1
V
OUT2
2.2F
16V
VSNSOUT
10k
3.3nF
280
100pF
2.1k
4.99k
1.5nF
COMP2
FB2
LTC3861-1
SS2
频率
CLKIN
CLKOUT
PHSMD
PGOOD2
PWMEN2
PWM2
V
IN
53.6k
0.22F
C
IN5
22F × 2
10k
16V
BOOT
相
FDMF6707B
V
IN
VSWH
DISB
PWM
保护地
VDRV
VCIN
SMOD
CGND
10k
38611 TA05
0.22F
2.87k
L4
0.47H
V
OUT2
1.8V / 25A
C
OUT3
100F × 2
6.3V
C
OUT4
330F
×3
2.5V
2.2F
16V
C
OUT2
, C
OUT4
： SANYO 2R5TPE330M9
C
OUT1
, C
OUT3
： MURATA GRM32ER60J107ME20
L1，L2 ，L3，L4 ：商Wurth Elektronik 744355147
38611f
34
