ADP3209JCPZ-RL ON Semiconductor, ADP3209JCPZ-RL Datasheet - Page 13

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ADP3209JCPZ-RL

Manufacturer Part Number
ADP3209JCPZ-RL
Description
IC CTRLR BUCK 5BIT GMCH 32LFCSP
Manufacturer
ON Semiconductor
Datasheet

Specifications of ADP3209JCPZ-RL

Applications
Controller, Power Supplies for Next-Generation Intel Processors
Voltage - Input
4.5 ~ 5.5 V
Number Of Outputs
1
Voltage - Output
0.4 ~ 1.25 V
Operating Temperature
0°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
32-LFCSP
Output Voltage
0.4 V to 1.25 V
Mounting Style
SMD/SMT
Maximum Operating Temperature
+ 100 C
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADP3209JCPZ-RLTR

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The ADP3209 is a ramp-pulse-modulated (RPM) controller for
synchronous buck Intel GMCH core power supply. The internal
5-bit VID DAC conforms to the Intel IMVP-6+ specifications. The
ADP3209 is a stable, high performance architecture that includes
High speed response at the lowest possible switching
frequency and minimal count of output decoupling capacitors
Minimized thermal switching losses due to lower frequency
operation
High accuracy load line regulation
High power conversion efficiency with a light load by
automatically switching to DCM operation
I
R
= A
R
C
× I
R
RAMP
1V
COMP
VRMP
R
A
400ns
C
FB
Q
Q
C
A
FB
FLIP-FLOP
S
RD
+
FLIP-FLOP
R
+
C
S
RD
FB
B
VDC
V
+ –
CS
FBRTN
Q
Q
Rev. 2 | Page 13 of 32 | www.onsemi.com
30mV
Figure 19. RPM Mode Operation
LLINE
+
R2
CSCOMP
R2
GATE DRIVER
1V
OPERATION MODES
The ADP3209 runs in RPM mode for the purpose of fast
transient response and high light load efficiency. During the
following transients, the ADP3209 runs in PWM mode:
IN
DCM
DRVH
DRVL
BST
SW
Soft start
Soft transient: the period of 100 µs following any VID change
Current overload
R1
R1
CSREF
CSFB
R
C
DRVH
DRVL
CS
CS
BST
SW
5V
VCC
R
PH
R
I
L
LOAD

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