ADP3168 Analog Devices, ADP3168 Datasheet
ADP3168
Manufacturer Part Number
ADP3168
Description
4-Phase Synchronous Buck Controller
Manufacturer
Analog Devices
Datasheet
1.ADP3168.pdf
(24 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADP3168J
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
ADP3168JRU
Manufacturer:
LT
Quantity:
1 587
Part Number:
ADP3168JRU
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADP3168JRU-REEL
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADP3168JRUZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
www.DataSheet4U.com
DataSheet U .com
4
FEATURES
Selectable 2-, 3-, or 4-phase operation at up to
±10 mV worst-case differential sensing error over
Logic-level PWM outputs for interface to
Active current balancing between all output phases
Built-in Power Good/crowbar blanking supports
On-the-fly VID code changes
6-bit digitally programmable 0.8375 V to 1.6 V output
Programmable short-circuit protection with
APPLICATIONS
Desktop PC power supplies for:
GENERAL DESCRIPTION
The ADP3168 is a highly efficient, multiphase, synchronous
buck switching regulator controller optimized for converting a
12 V main supply into the core supply voltage required by high
performance Intel processors. It uses an internal 6-bit DAC to
read a voltage identification (VID) code directly from the
processor, which is used to set the output voltage between
0.8375 V and 1.6 V, and uses a multimode PWM architecture to
drive the logic-level outputs at a programmable switching
frequency that can be optimized for VR size and efficiency. The
phase relationship of the output signals can be programmed to
provide 2-, 3-, or 4-phase operation, allowing for the construc-
tion of up to four complementary buck switching stages.
The ADP3168 also includes programmable no-load offset and
slope functions to adjust the output voltage as a function of the
load current so that it is always optimally positioned for a
system transient. The ADP3168 also provides accurate and
reliable short-circuit protection, adjustable current limiting, and
a delayed Power Good output that accommodates on-the-fly
output voltage changes requested by the CPU.
The device is specified over the commercial temperature range
of 0°C to 85°C and is available in a 28-lead TSSOP package.
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
1 MHz per phase
temperature
external high power drivers
programmable latch-off delay
Next generation Intel® processors
VRM modules
6-Bit, Programmable 2-, 3-, 4-Phase
PWRGD
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
DELAY
ILIMIT
COMP
GND
EN
Synchronous Buck Controller
19
10
15
12
11
9
+150mV
CSREF
DAC
–250mV
EN
DAC
SHUTDOWN
REFERENCE
PRECISION
AND BIAS
DELAY
FBRTN
UVLO
FUNCTIONAL BLOCK DIAGRAM
VCC
START
SOFT-
28
7
VID4
RAMPADJ
© 2004 Analog Devices, Inc. All rights reserved.
1
OSCILLATOR
BALANCING
14
CURRENT-
CIRCUIT
VID3
2
CURRENT-
Figure 1.
CIRCUIT
LIMIT
RT
13
VID2
3
DAC
VID
VID1
CMP
CMP
4
CMP
CMP
CROWBAR
VID0
RESET
RESET
RESET
RESET
2-, 3-, 4-PHASE
DRIVER LOGIC
5
CURRENT
ADP3168
ADP3168
www.analog.com
SET
LIMIT
VID5
6
EN
27
26
25
24
23
22
21
20
17
16
18
8
PWM1
PWM2
PWM3
PWM4
SW1
SW2
SW3
SW4
CSSUM
CSREF
CSCOMP
FB
Related parts for ADP3168
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Cpe Side Splitter
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
Adsl Line Transformer
Manufacturer:
Bothhand USA, LP
Datasheet:
Part Number:
Description:
USB TO I2C INTERFACE
Manufacturer:
Analog Devices
Datasheet:
Part Number:
Description:
Analog Devices -
Manufacturer:
Analog Devices
Datasheet:
Part Number:
Description:
Analog Devices [Wideband Dual-Channel Linear Multiplier/Divider]
Manufacturer:
Analog Devices
Datasheet:
Part Number:
Description:
Precision Analog Microcontroller, 12-Bit Analog I/O, Large Memory, ARM7TDMI MCU with Enhanced IRQ Handler
Manufacturer:
Analog Devices
Datasheet: