LTC3784_15 Datasheet, PDF (34/38 Pages) Linear Technology – 60V PolyPhase Synchronous Boost Controller

LTC3784
Typical Applications
INTV_CC
C_SS, 0.1µF
C_ITH, 15nF _{RITH, 8.66k}
C_ITHA, 220pF
R_A, 12.1k
R_B
232k
SENSE1⁺
SENSE1^–
PGOOD
ILIM
TG1
PHASMD
SW1
OVMODE
PLLIN/MODE BOOST1
SGND
EXTV_CC
BG1
RUN LTC3784
FREQ
VBIAS
INTV_CC
SS
PGND
ITH
BG2
VFB
CLKOUT
BOOST2
SW2
TG2
SENSE2^–
SENSE2⁺
100k
INTV_CC
C_B1, 0.1µF
D1
C_INT1
4.7µF
D2
C_B2, 0.1µF
MTOP1 ^L1
3.3µH
R_SENSE1
4mΩ
MBOT1
MBOT2
L2 R_SENSE2
3.3µH 4mΩ
MTOP2
SENSE1⁺
SENSE1^–
PGOOD
ILIM
TG1
PHASMD
SW1
OVMODE
PLLIN/MODE BOOST1
SGND
EXTV_CC
BG1
RUN _LTC3784
FREQ
VBIAS
INTV_CC
PGND
SS
BG2
ITH
VFB
CLKOUT
BOOST2
SW2
TG2
SENSE2^–
SENSE2⁺
100k
INTV_CC
C_B3, 0.1µF
D3
C_INT2
4.7µF
D4
C_B4, 0.1µF
MTOP3 ^L3
3.3µH
R_SENSE3
4mΩ
MBOT3
MBOT4
L4 R_SENSE4
3.3µH 4mΩ
MTOP4
C_INA, C_OUTA1, C_OUTA2, C_OUTA3, C_OUTA4: TDK C4532X5R1E226M
C_INB, C_OUTB1, C_OUTB2, C_OUTB3, C_OUTB4: SANYO, 50CE220LX
L1, L2, L3, L4: PULSE PA1494.362NL
MBOT1, MBOT2, MBOT3, MBOT4, MTOP1, MTOP2, MTOP3, MTOP4: RENESAS HAT2169H
D1, D2, D3, D4: BAS140W
*WHEN V_IN < 8V, MAXIMUM LOAD CURRENT AVAILABLE IS REDUCED.
Figure 15. 4-Phase 480W Single Output Boost Converter
34
For more information www.linear.com/LTC3784
C_OUTA1 ⁺
22µF
×4
C_OUTB1
220µF
C_OUTA2 +
22µF
×4
C_OUTB2
220µF
V_IN
C_INA
22µF
×4
+
5V to 24V
C_INB
220µF
V_OUT
24V
20A*
C_OUTA3 ⁺
22µF
×4
C_OUTB3
220µF
C_OUTA4 +
22µF
×4
C_OUTB4
220µF
3784 F15
3784fb