ADP3198JCPZ-RL

更新时间： 2024-09-27 03:13:47

品牌	Logo	应用领域
亚德诺 - ADI		稳压器开关式稳压器或控制器电源电路开关式控制器
页数	文件大小	规格书
32页	1123K
描述
8-Bit Programmable 2- to 4-Phase Synchronous Buck Controller

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ADP3198JCPZ-RL 数据手册

8-Bit Programmable 2- to 4-Phase

Synchronous Buck Controller

ADP3198

FUNCTIONAL BLOCK DIAGRAM

FEATURES

VCC

RT RAMPADJ

12 13

Selectable 2-, 3-, or 4-phase operation at up to

1 MHz per phase

11 ꢀV worst-case differential sensing error over

teꢀperature

SHUNT

REGULATOR

OSCILLATOR

UVLO

SHUTDOWN

SET EN

RESET

Logic-level PWM outputs for interface to external high

power drivers

Enhanced PWM flex ꢀode for excellent load transient

perforꢀance

Active current balancing between all output phases

Built-in power-good/crowbar blanking supports on-the-fly

VID code changes

Digitally prograꢀꢀable 0.5 V to 1.6 V output supports both

VR10.x and VR11 specifications

Prograꢀꢀable short-circuit protection with prograꢀꢀable

latch-off delay

GND

PWM1

PWM2

PWM3

CMP

–

850mV

RESET

CMP

–

DAC

+ 150mV

–

RESET

2/3/4-PHASE

DRIVER LOGIC

CMP

–

CSREF

27 PWM4

–

RESET

CMP

–

DAC

– 500mV

CURRENT

LIMIT

DELAY

PWRGD

CROWBAR

SW1

SW2

SW3

TTSENSE

VRHOT

THERMAL

THROTTLING

CONTROL

VRFAN

SW4

APPLICATIONS

Desktop PC power supplies for next generation

Intel® processors

CSCOMP

CSREF

ILIMIT

CURRENT

MEASUREMENT

AND LIMIT

–

DELAY

CSSUM

IMON

VRM ꢀodules

IREF

–

COMP

GENERAL DESCRIPTION

PRECISION

REFERENCE

LLSET

–

BOOT

The ADP3198¹is 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 per-

formance Intel processors. It uses an internal 8-bit DAC to read

a voltage identification (VID) code directly from the processor,

which is used to set the output voltage between 0.5 V and 1.6 V.

FBRTN

VIDSEL

VOLTAGE

AND

SOFT START

CONTROL

VID DAC

ADP3198

VID7 VID6 VID5 VID4 VID3 VID2 VID1 VID0

Figure 1.

This device 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 relation-

ship of the output signals can be programmed to provide 2-, 3-,

or 4-phase operation, allowing for the construction of up to

four complementary buck switching stages.

The ADP3198 has a built-in shunt regulator that allows the part

to be connected to the 12 V system supply through a series resistor.

The ADP3198 is specified over the extended commercial

temperature range of 0°C to 85°C and is available in a

40-lead LFCSP.

The ADP3198 also includes programmable no load offset and

slope functions to adjust the output voltage as a function of the

load current, optimally positioning it for a system transient. The

ADP3198 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.

¹Protected by U.S. Patent Number 6,683,441; other patents pending.

Rev. A

Inforꢀation furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assuꢀed by Analog Devices for its use, nor for any infringeꢀents of patents or other

rights of third parties that ꢀay result froꢀ its use. Specifications subject to change without notice. No

license is granted by iꢀplication or otherwise under any patent or patent rights of Analog Devices.

Tradeꢀarks and registeredtradeꢀarks arethe property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.coꢀ

12 3 4 5 6 7...32

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与ADP3198JCPZ-RL相关器件

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ADP3203	ADI	获取价格	2-Phase IMVP-II & IMVP-III Core Controller for Mobile CPUs
ADP3203JRU-0.85-R7	ROCHESTER	获取价格	SWITCHING CONTROLLER, PDSO28, TSSOP-28
ADP3203JRU-0.85-RL	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO28, TSSOP-28, Switching Regulator or Controller
ADP3203JRU-0.85-RL	ROCHESTER	获取价格	SWITCHING CONTROLLER, PDSO28, TSSOP-28
ADP3203JRU-085-RL	ADI	获取价格	2-Phase IMVP-II & IMVP-III Core Controller for Mobile CPUs
ADP3203JRU-1.0-RL	ADI	获取价格	IC SWITCHING CONTROLLER, PDSO28, TSSOP-28, Switching Regulator or Controller
ADP3203JRU-1.0-RL7	ROCHESTER	获取价格	SWITCHING CONTROLLER, PDSO28, TSSOP-28
ADP3203JRU-10-RL	ADI	获取价格	2-Phase IMVP-II & IMVP-III Core Controller for Mobile CPUs
ADP3203JRU-10-RL7	ADI	获取价格	2-Phase IMVP-II & IMVP-III Core Controller for Mobile CPUs

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