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| LTC3861-1 Datasheet, PDF (33/36 Pages) Linear Technology – Dual, Multiphase Step-Down Voltage Mode DC/DC Controller with Accurate Current Sharing | |||
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LTC3861-1
Typical Applications
4-Phase 1V/100A Converter with DrMOS, fSW = 500kHz
VIN
7V TO 14V
VCC
5V
CIN1
180µF
3.3nF 280Ω
20k
5.62k
470pF
3.3nF
30.1k
VOUT
VCC
CLKIN
500kHz EXTERNAL
SYNC INPUT
SS1
0.1µF
1µF
IAVG1
100pF
VIN
VCC
100k
RUN1
VCC
CIN2
22µF à 2
16V 10k
FB1
COMP1
VSNSP
VSNSN
VSNSOUT
COMP2
FB2
LTC3861-1
SS1
34k
RUN1
53.6k
1Ω
2.2µF
2.2µF
ILIM1
SGND
16V
16V
ISNS1P
ISNS1N
ISNS2N
ISNS2P
SGND
ILIM2
RUN2
VCC VIN
CIN3
22µF à 2
16V 10k
RUN1
VCC
1Ω
2.2µF
16V
2.2µF
16V
0.22µF
BOOT
PHASE
VIN TDA21220
DISB
VSWH
PWM
VDRV
PGND
VCIN SMOD CGND
10k
0.22µF
BOOT
PHASE
VIN TDA21220
DISB
VSWH
PWM
VDRV
PGND
VCIN SMOD CGND
10k
L1
0.47µH
2.87k
0.22µF
0.22µF
2.87k
L2
0.47µH
VOUT
1V/ 100A
COUT1
100µF à 8
6.3V
COUT2
330µF
Ã8
2.5V
VCC
5V
1µF
VCC
VIN
SS1
FB1
COMP1
VSNSP
VSNSN
VSNSOUT LTC3861-1
COMP2
VCC
FB2
SS1
34k
COUT2 : SANYO 2R5TPE330M9
COUT1 : MURATA GRM32ER60J107ME20
L1, L2, L3, L4 : WÃRTH ELEKTRONIK 744355147
VIN
CIN4
22µF à 2
16V 10k
RUN1
VCC
RUN1
53.6k
1Ω
2.2µF
2.2µF
ILIM1
SGND
16V
16V
ISNS1P
ISNS1N
ISNS2N
ISNS2P
SGND
ILIM2
RUN2
VCC VIN
RUN2
CIN5
22µF à 2
16V 10k
VCC
1Ω
2.2µF
16V
2.2µF
16V
0.22µF
BOOT
PHASE
VIN TDA21220
DISB
VSWH
PWM
VDRV
PGND
VCIN SMOD CGND
10k
0.22µF
BOOT
PHASE
VIN TDA21220
DISB
VSWH
PWM
VDRV
PGND
VCIN SMOD CGND
10k
L3
0.47µH
2.87k
0.22µF
0.22µF
2.87k
L4
0.47µH
38611 TA04
38611f
33
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