LTC3882_15 Datasheet, PDF (55/104 Pages) Linear Technology – Dual Output PolyPhase Step-Down DC/DC Voltage Mode Controller with Digital Power System Management

APPLICATIONS INFORMATION
V_IN
V_DD33
(0,120)
VINSNS
COMP0
FB0
FB1
RUN0
RUN1
GPIO0
LTC3882
COMP1
V_SENSE0+
V_SENSE1+
V_SENSE0–
GND
GPIO1
I_{AVG_GND}
SYNC (ENABLED) SHARE_CLK
I_AVG0 I_AVG1
LTC3882
(60,240)
VINSNS
COMP0
FB0
FB1
RUN0
RUN1
GPIO0
LTC3882
COMP1
V_SENSE0+
V_SENSE1+
V_SENSE0–
GND
GPIO1
I_{AVG_GND}
SYNC (DISABLED) SHARE_CLK
I_AVG0 I_AVG1
+
– ^{3-PHASE SENSE}
+
1-PHASE SENSE
–
SYSTEM ON/OFF
BOTH ICs SAME DEFAULT FREQUENCY SWITCH 3882 F38
Figure 38. 3+1-Phase Application
V_IN
V_DD33
(0,180, CLOCK MASTER)
VINSNS
FB0
FB1
RUN0
RUN1
COMP0
LTC3882 _COMP1
V_SENSE0+
V_SENSE1+
V_SENSE0–
GPIO0
GND
GPIO1
I_{AVG_GND}
SYNC
SHARE_CLK
I_AVG0 I_AVG1
(45,225)
VINSNS
FB0
FB1
RUN0
RUN1
COMP0
LTC3882 _COMP1
V_SENSE0+
V_SENSE1+
V_SENSE0–
GPIO0
GND
GPIO1
I_{AVG_GND}
SYNC
SHARE_CLK
I_AVG0 I_AVG1
(90,270)
VINSNS
FB0
FB1
RUN0
RUN1
COMP0
LTC3882 _COMP1
V_SENSE0+
V_SENSE1+
V_SENSE0–
GPIO0
GND
GPIO1
I_{AVG_GND}
SYNC
SHARE_CLK
I_AVG0 I_AVG1
(135,315)
VINSNS
FB0
FB1
RUN0
RUN1
COMP0
LTC3882 _COMP1
V_SENSE0+
V_SENSE1+
V_SENSE0–
GPIO0
GND
GPIO1
I_{AVG_GND}
SYNC
SHARE_CLK
I_AVG0 I_AVG1
+
– ^{VOUT SENSE}
SYSTEM ON/OFF
ALL ICs SAME DEFAULT FREQUENCY SWITCH
3882 F39
Figure 39. 8-Phase Application
For more information www.linear.com/LTC3882
3882f
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