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| LTC3788 Datasheet, PDF (30/32 Pages) Linear Technology – 2-Phase, Dual Output Synchronous Boost Controller | |||
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LTC3788
APPLICATIONS INFORMATION
RS1 53.6k, 1%
RB1
232k
1%
RA1
12.1k, 1%
RS2
26.1k, 1%
C3
0.1μF
C1
0.1μF
CITH1, 220pF
CITH1, 15nF
RITH1
8.87k, 1%
CSS1, 0.01μF
INTVCC
RFREQ
41.2k
CSS2, 0.1μF
CITH2, 4.7nF
RITH2
23.7k, 1%
CITH2A 220pF
SENSE1â
SENSE1+
PGOOD2
PGOOD1
LTC3788
VFB1
TG1
SW1
BOOST1
ITH1
BG1
SS1
ILIM
PHSMD
CLKOUT
PLLIN/MODE
SGND
EXTVCC
RUN1
RUN2
FREQ
VBIAS
INTVCC
PGND
BG2
BOOST2
SS2
SW2
ITH2
TG2
100k INTVCC
100k
CB1, 0.1μF
D1
CINT
4.7μF
D2
CB1, 0.1μF
RA2
12.1k, 1%
RB2
475k
1%
RS4
30.1k, 1%
C4
0.1μF
C2
0.1μF
VFB2
SENSE2+
SENSE2â
D3
MTOP1
L1
10.2μH
MBOT1
MBOT2A
MBOT2B
D4
MTOP2
L2
16μH
RS3 42.2k, 1%
COUTA1: C4532x7R1H685K
COUTB1: SANYO 63CE220KX
CINA, COUTA2: TDK C4532X5R1E226M
CINB, COUTB2: SANYO 50CE220AX
L1: PULSE PA2050.103NL
L2: PULSE PA2050.163NL
MBOT1, MTOP1: RENESAS RJK0305
MBOT2A, MBOT2B, MTOP2: RENESAS RJK0652
D3: DIODES INC B340B
D4: DIODES INC B360A
3788 F10
COUTA1 +
6.8μF
s4
VOUT1
24V, 4A
COUTB1
220μF
VIN
5V TO 24V
CINA + CINB
22μF
220μF
s4
COUTA2 +
22μF
s4
VOUT2
48V, 2A
COUTB2
220μF
Figure 10. High Efï¬ciency Dual 24V/48V Boost Converter with Inductor DCR Current Sensing
3788f
30
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