ISL78227 Datasheet, PDF (8/43 Pages) Intersil Corporation – 2-Phase Boost Controller with Integrated Drivers

ISL78227
Typical Application - 2-Phase Synchronous Boost
RVCC
10 
CVCC
1µF
VCC _VCC
SGND
VIN
VIN
EN_IC
EN
POWER-GOOD
VCC
RPG
PGOOD
TRACK
CLOCK_OUT
CSS
CPLL1
6.8nF
RPLL
3.3k 
CPLL2
1nF
RFS
RSLOPE
RBLANK
CLKOUT
SS
ISL78227
PLLCOMP
FSYNC
SLOPE
RBLANK
RDT
RDT
ATRK/DTRK
VCC
HIC/LATCH
VCC
DE/PHDRP
PVCC
PGND
BOOT1
UG1
PH1
LG1
ISEN1N
ISEN1P
BOOT2
UG2
PH2
PVCC
CPVCC
10µF
DBOOT1
RPVCCBT
5.1 
PVCC_BT
CBOOT1
0.47µF
Q1
COUT
L1
Q2
RBIAS1B
CISEN1
220pF
RSET1B
DBOOT2
PVCC_BT
C0.B₄O₇O_µT_F2
RBIAS1A
RSET1A
COUT
Q3
L2
LG2
Q4
ISEN2N
ISEN2P
IMON
RBIAS2B
RSET2B
CIMON
FB
COMP
RIMON
CCP1
RCP
CISEN2
220pF
RBIAS2A
RSET2A
RFB2
RFB1
CCP2
RSEN1
1m 
RSEN2
1m 
CIN
CIN
VOUT
VIN
ATRK/DTRK:
= VCC to track analog signal
= GND to track digital signal
Q1, Q2, Q3, Q4: 2 BUK9Y6R0-60E in parallel
HIC/LATCH:
= VCC for HICCUP mode
= GND for LATCHOFF mode
DE/PHDRP:
= VCC for DE mode
= FLOAT for DE and Phase-Drop mode
= GND for CCM mode
FIGURE 4. TYPICAL APPLICATION 2-PHASE SYNCHRONOUS BOOST
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8
FN8808.2
February 24, 2016