ADP3208 ON Semiconductor, ADP3208 Datasheet - Page 16

• Manufacturer Part Number: ADP3208
• Description: 7-bit, Programmable, Dual-phase, Mobile, Cpu, Synchronous Buck Controller
• Manufacturer: ON Semiconductor

ADP3208
Table 4. Phase Number and Operation Modes
PSI No.
*
1
0
0
*
*
1
2
3
* = don’t care.
VID transient period is the time following any VID change, including entry into and exit from deeper sleep mode. The duration of VID transient period is the same as
that of PWRGD masking time.
CCM stands for continuous current mode, and DCM stands for discontinuous current mode.
I
R
DPRSLP
*
0
0
0
1
1
= A
R
C
× I
R
RAMP
1V
COMP
VID Transition
Yes
No
No
No
No
No
30mV
VRMP
R
A
400ns
C
FB
Q
Q
C
A
FB
R2
2
FLIP-FLOP
R2
S
RD
+
FLIP-FLOP
R
+
C
S
RD
1V
FB
B
Current Limit
*
*
No
Yes
No
Yes
VDC
V
1
+ –
CS
FBRTN
Figure 24. Single-Phase RPM Mode Operation
Q
Q
R1
R1
Rev. 1 | Page 16 of 38 | www.onsemi.com
LLINE
–
+
No. of Phases
Selected by
the User
N [2 or 1]
N [2 or 1]
*
*
*
*
CSCOMP
GATE DRIVER
GATE DRIVER
IN
DCM
IN
DCM
DRVH
DRVH
DRVL
DRVL
BST
BST
SW
SW
DRVH2
CSREF
CSSUM
DRVL2
DRVH1
DRVL1
R
C
BST1
No. of Phases
in Operation
N
N
1
1
1
1
BST2
SW2
CS
CS
SW1
5V
5V
VCC
VCC
R
R
PH
PH
R I
R
Operation Modes
PWM, CCM only
PWM, CCM only
RPM, CCM only
PWM, CCM only
RPM, automatic CCM/DCM
PWM, CCM only
I
L
L
LOAD
3