ADP3212 ON Semiconductor, ADP3212 Datasheet - Page 18

• Manufacturer Part Number: ADP3212
• Description: 7-bit Programmable, 3-phase,mobile Cpu Synchronous Buck Controller
• Manufacturer: ON Semiconductor

ADP3212/NCP3218
VCC
RAMP
C
C
C
R
R
R
I = A
I = A
I = A
R
R
R
R
R
R
A
A
A
x I
x I
x I
D
D
D
COMP
RAMP
RAMP
RAMP
+
+
+
-
-
-
Oscillator
Oscillator
Oscillator
R
Clock
Clock
Clock
A
C FB
0.2V
0.2V
0.2V
C A
+
-
FB
+
R
C B
+
-
+
-
+
-
Σ
B
FBRTN
+
+
_
LLINE
Flip-Flop
Flip-Flop
Flip-Flop
S
S
S
RD
RD
RD
Figure 10. 3-Phase PWM Mode Operation
DAC
Σ
Q
Q
Q
_
+
CSCOMP
Rev. SpA | Page 18 of 43
Gate Driver
IN
IN
Gate Driver
DRVH
DRVL
DRVH
DRVL
BST
SW
BST
SW
+
-
CSREF
SWFB3
CSSUM
C
SWFB1
DRVH2
SWFB2
PWM3
R
DRVL2
DRVH1
DRVL1
BST2
CS
SW2
CS
BST1
SW1
1 kΩ
1 kΩ
Gate Driver
IN
VCC
VCC
R
R
R
DRVH
DRVL
PH
PH
PH
BST
SW
1 kΩ
R L
R L
L
L
VCC
R L
L
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