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參數(shù)資料
| 型號(hào)： | ADP3160 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 5-Bit Programmable 2-Phase Synchronous Buck Controller |
| 中文描述： | 5位可編程2相同步降壓控制器 |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大小： | 292K |
| 代理商： | ADP3160 |
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REV. B
a
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
Tel: 781/329-4700Fax: 781/326-8703
Analog Devices, Inc., 2002ADP3160/ADP3167
5-Bit Programmable 2-Phase
Synchronous Buck Controller
ADOPT is a trademark of Analog Devices, Inc.
Athlon is a trademark of Advanced Micro Devices, Inc.
Pentium is a registered trademark of Intel Corporation.
FEATURES
ADOPT Optimal Positioning Technology for Superior
Load Transient Response and Fewest Output Capacitors
Complies with VRM 9.0 with Lowest System Cost
Active Current Balancing between Both Output Phases
5-Bit Digitally Programmable 1.1 V to 1.85 V Output
Dual Logic-Level PWM Outputs for Interface to External
High Power Drivers
Total Output Accuracy 0.8% over Temperature
Current-Mode Operation
Short Circuit Protection
Power Good Output
Overvoltage Protection Crowbar Protects
Microprocessors with No Additional
External Components
APPLICATIONS
Desktop PC Power Supplies for:
Intel Pentium
4 Processors
AMD Athlon Processors
VRM Modules
GENERAL DESCRIPTION
The ADP3160 and ADP3167 are highly efficient, dual output,
synchronous buck switching regulator controllers optimized for
converting a 5 V or 12 V main supply into the core supply voltage
required by high-performance processors, such as Pentium 4 and
Athlon. The ADP3160 uses an internal 5-bit DAC to read a volt-
age identification (VID) code directly from the processor that is
used to set the output voltage between 1.1 V and 1.85 V. The
devices use a current-mode PWM architecture to drive two logic-
level outputs at a programmable switching frequency that can be
optimized for VRM size and efficiency. The output signals are
180 degrees out of phase, allowing for the construction of two
complementary buck switching stages. These two stages share the
dc output current to reduce overall output voltage ripple. An
active current balancing function ensures that both phases carry
equal portions of the total load current, even under large transient
loads, to minimize the size of the inductors. The ADP3160 control
FUNCTIONAL BLOCK DIAGRAM
2-PHASE
DRIVER
LOGIC
UVLO
AND
BIAS
3.0V
REFERENCE
OSCILLATOR
SET
RESET
CROWBAR
VCC
REF
GND
CT
COMP
PWM1
PWM2
PWRGD
CS–
CS+
FB
VID
DAC
VID4
VID3
VID2
VID1
VID0
CMP2
CMP1
DAC–18%
g
m
DAC+24%
ADP3160/ADP3167
CMP3
CMP
CMP
loop has been optimized for conversion from 12 V, while the
ADP3167 is designed for conversion from a 5 V supply.
The ADP3160 and ADP3167 also use a unique supplemental
regulation technique called active voltage positioning to enhance
load transient performance. Active voltage positioning results
in a dc/dc converter that meets the stringent output voltage
specifications for high-performance processors, with the minimum
number of output capacitors and smallest footprint. Unlike
voltage-mode and standard current-mode architectures, active
voltage positioning adjusts the output voltage as a function of
the load current so that it is always optimally positioned for a
system transient. They also provide accurate and reliable short
circuit protection and adjustable current limiting.
The ADP3160 is specified over the commercial temperature
range of 0
∞
C to 70
∞
C and is available in a 16-lead narrow body
SOIC package.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADP3160JR | 5-Bit Programmable 2-Phase Synchronous Buck Controller |
| ADP3167JR | 5-Bit Programmable 2-Phase Synchronous Buck Controller |
| ADP3163JRU | 5-Bit Programmable 2-/3-Phase Synchronous Buck Controller |
| ADP3163 | 500-mA, 4.2-V Li-Ion Charger for Current-Limited App. w/Temp Sense in MSOP-8 8-MSOP-PowerPAD -40 to 85 |
| ADP3166 | 5-Bit Programmable 2-, 3-, 4-Phase Synchronous Buck Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADP3160JR | 制造商:Rochester Electronics LLC 功能描述:5BIT PRGRM'BLE 2PHASE SYNCRO BUCK CNTRLR - Bulk |
| ADP3160JR-REEL | 制造商:Rochester Electronics LLC 功能描述:5BIT PRGRM'BLE 2PHASE SYNCRO BUCK CNTRLR - Tape and Reel |
| ADP3160JR-REEL7 | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| ADP3161 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:4-Bit Programmable 2-Phase Synchronous Buck Controller |
| ADP3161JR | 制造商:Rochester Electronics LLC 功能描述:5-BIT PROG. 2-PHASE SYNC. BUCK CNTRLR. - Bulk |
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