LTC3615 Datasheet, PDF (29/32 Pages) Linear Technology – Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter

LTC3615
Typical Applications
Master and Slave for Coincident Tracking Outputs Using a 2MHz External Clock
V_IN
3.3V
C1
C2
47µF
47µF
C_SYNC
15pF
PGOOD1
2MHz
CLOCK
R_T
200k
R5
10nF
100k
R_C1
15k
C_C1
1000pF
C_C2
10pF
R8
174k
R7
100k
PGOOD2
R_C2
15k
C_C3
470pF
C_C4
10pF
R_F1
24Ω
C_F1
1µF
4.7M
R9
226k
SV_IN (2s) PV_IN1 (2s) PV_IN2
RUN1
(2s) SW1
TRACK/SS1
FB1
LTC3615
PGOOD1
R_T /SYNC
ITH1
L1
0.47µH
SRLIM
MODE
(2s) SW2
PHASE
RUN2
FB2
TRACK/SS2
PGOOD2
ITH2 SGND PGND
L2
0.47µH
R1
715k
R2
357k
R5
294k
R6
294k
C3
22pF ^R3
453k
R4
453k
C7
22pF
C_O21
47µF
C_O11
47µF
V_OUT1
1.8V/3A
C_O12
22µF
C_O22
22µF
V_OUT2
1.2V/3A
3615 TA04a
Coincident Start-Up
500mV/
DIV
V_OUT1
V_OUT2
2ms/DIV
3615 TA04b
Coincident Tracking Up/Down
500mV/
DIV
V_OUT1
V_OUT2
200ms/DIV
3615 TA04c
3615f
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