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LT3757 Datasheet(PDF) 20 Page - Linear Technology

Part # LT3757
Description  PolyPhase Synchronous Boost Controller
PDF  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3757 Datasheet(HTML) 20 Page - Linear Technology

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LTC3787
20
3787fc
APPLICATIONS INFORMATION
Tying the PHASMD pin to INTVCC, SGND or floating
generates a phase difference (between PLLIN/MODE
and CLKOUT) of 240°, 60° or 90°, respectively, and a
phase difference (between CH1 and CH2) of 120°, 180°
or 180°. Figure 4 shows the connections necessary for
3-, 4-, 6- or 12-phase operation. A total of 12 phases can
be cascaded to run simultaneously out-of-phase with
respect to each other.
Figure 4. PolyPhase Operation
VOUT
SS
CLKOUT
0,180
(4d) 12-Phase Operation
(4c) 6-Phase Operation
(4b) 4-Phase Operation
3787 F04
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
+60
+60
+60
+60
+90
SS
CLKOUT
60,240
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
SS
CLKOUT
120,300
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
SS
CLKOUT
210,30
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
+60
+60
SS
CLKOUT
270,90
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
SS
CLKOUT
330,150
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
VOUT
SS
CLKOUT
0,180
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
SS
CLKOUT
60,240
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
SS
CLKOUT
120,300
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
+90
VOUT
SS
CLKOUT
0,180
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
SS
CLKOUT
90,270
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
(4a) 3-Phase Operation
+120
VOUT
INTVCC
SS
CLKOUT
0,240
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN
SS
CLKOUT
120, CHANNEL 2 NOT USED
PLLIN/MODE
PHASMD
LTC3787
VFB
ITH
RUN



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