ISL6308A Datasheet, PDF (27/28 Pages) Intersil Corporation – Three-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers

ISL6308A
+5V
C_HF0
R_OFST
R_FS
R_REF
C_REF
+12V
R₁
VDIFF
VSEN
RGND
C₁
FB
LOCATE CLOSE TO IC
C₂
(MINIMIZE CONNECTION PATH)
R₂
COMP
PVCC1
BOOT1
UGATE1
C_HF01
C_BOOT1
+12V
C_HF1
KEY
HEAVY TRACE ON CIRCUIT PLANE LAYER
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT PLANE LAYER
VIA CONNECTION TO GROUND PLANE
C_BIN1
LOCATE NEAR SWITCHING TRANSISTORS;
(MINIMIZE CONNECTION PATH)
3PH
2PH
VCC
PHASE1
ISEN1
LGATE1
R_ISEN1
L_OUT1
OFST
FS
DAC
REF
REF1
REF0
OVP
PGOOD
GND
ISL6308A
PVCC2
C_HF02
BOOT2
UGATE2
C_BOOT2
+12V
C_HF2
C_BIN2
PHASE2
ISEN2
LGATE2
R_ISEN2
L_OUT2
C_BOUT (C_HFOUT)
LOAD
PVCC3
BOOT3
UGATE3
C_HF03
C_BOOT3
+12V
C_BIN3
C_HF3
LOCATE NEAR LOAD;
(MINIMIZE CONNECTION PATH)
ENLL
IREF
DROOP
OCSET ICOMP
ISUM
R_COMP
R_OCSET
C_COMP
PHASE3
ISEN3
LGATE3
C_SUM
R_ISEN3
R_S
R_S
R_S
L_OUT3
FIGURE 27. PRINTED CIRCUIT BOARD POWER PLANES AND ISLANDS
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Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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27
FN6669.0
September 9, 2008