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| LTC3788_15 Datasheet, PDF (29/32 Pages) Linear Technology – 2-Phase, Dual Output Synchronous Boost Controller | |||
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Applications Information
LTC3788
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 PGOOD2
SENSE1+ 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%
COUTA2: C4532x7R1H685K
COUTB2: SANYO 63CE220KX
CINA, COUTA1: TDK C4532X5R1E226M
CINB, COUTB1: 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
Ã4
VOUT1
24V, 4A
COUTB1
220µF
VIN
5V TO 24V
CINA + CINB
22µF
220µF
Ã4
COUTA2 +
22µF
Ã4
VOUT2
48V, 2A
COUTB2
220µF
Figure 10. High Efficiency Dual 24V/48V Boost Converter with Inductor DCR Current Sensing
3788fc
29
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