ADP3196

更新时间： 2024-12-01 11:56:11

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
18页	359K
描述
6-Bit Programmable 2- to 4-Phase Synchronous Buck Controller

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ADP3196 数据手册

6-Bit Programmable 2- to 4-Phase

Synchronous Buck Controller

ADP3196

FUNCTIONAL BLOCK DIAGRAM

FEATURES

VCC

RAMPADJ

Selectable 2-, 3-, or 4-phase operation at up to 1 MHz

per phase

SHUNT

REGULATOR

10 ꢀV worst-case differential sensing error over

teꢀperature

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

OSCILLATOR

UVLO

SHUTDOWN

SET EN

RESET

GND

CMP

PWM1

PWM2

–

800mV

CSREF

CMP

RESET

–

CURRENT

BALANCING

CIRCUIT

CMP

RESET

PWM3

PWM4

–

1.8V

–

2-/3-/4-PHASE

DRIVER LOGIC

–

CMP

RESET

–

DAC – 250mV

CURRENT

LIMIT

Digitally prograꢀꢀable 0.3750 V to 1.55 V output

Prograꢀꢀable short-circuit protection with prograꢀꢀable

latch-off delay

DELAY

PWRGD

CROWBAR

SW1

SW2

SW3

SW4

TTSENSE 10

THERMAL

THROTTLING

CONTROL

VRMHOT

APPLICATIONS

VRM_OFF

Desktop PC power supplies for next generation

AMD processors

VRM ꢀodules

17 CSCOMP

ILIMIT

CURRENT

MEASUREMENT

AND LIMIT

–

CSREF

DELAY

CSSUM

GENERAL DESCRIPTION

21 IMON

IREF 20

The ADP3196¹is 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 Advanced Micro Devices, Inc. (AMD) 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 0.3750 V and 1.55 V.

–

COMP

PRECISION

REFERENCE

LLSET

–

FBRTN

SOFT START

CONTROL

VID DAC

ADP3196

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

relationship 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.

VID5 VID4 VID3 VID2 VID1 VID0

Figure 1. Functional Block Diagram

The ADP3196 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 ADP3196 has a built-in

shunt regulator that allows the part to be connected to the 12 V

system supply through a series resistor.

The ADP3196 supports a programmable slope function to

adjust the output voltage as a function of the load current so

that it is always optimally positioned for a system transient.

This can be disabled by connecting Pin LLSET to Pin CSREF.

The ADP3196 is specified over the extended commercial

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

40-lead LFCSP.

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

January 2008 – Rev. 1

Publication Order Number:

ADP3196/D

12 3 4 5 6 7...18

中文翻译

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与ADP3196相关器件

型号	品牌	获取价格	描述	数据表
ADP3196JCPZ-RL	ONSEMI	获取价格	6-Bit Programmable 2- to 4-Phase Synchronous Buck Controller
ADP3196JCPZ-RL	ADI	获取价格	6-Bit Programmable 2- to 4-Phase Synchronous Buck Controller
ADP3197	ADI	获取价格	6-Bit Programmable 2-/3-Phase Synchronous Buck Controller
ADP3197JCPZ-RL	ADI	获取价格	6-Bit Programmable 2-/3-Phase Synchronous Buck Controller
ADP3198	ADI	获取价格	8-Bit Programmable 2- to 4-Phase Synchronous Buck Controller
ADP3198	ONSEMI	获取价格	8-Bit Programmable 2- to 4-Phase Synchronous Buck Controller
ADP3198AJCPZ-RL	ADI	获取价格	暂无描述
ADP3198AJCPZ-RL	ONSEMI	获取价格	SWITCHING CONTROLLER, 4000kHz SWITCHING FREQ-MAX, QCC40, 6 X 6 MM, ROHS COMPLIANT, MO-220V
ADP3198JCPZ-RL	ONSEMI	获取价格	8-Bit Programmable 2- to 4-Phase Synchronous Buck Controller
ADP3198JCPZ-RL	ADI	获取价格	8-Bit Programmable 2- to 4-Phase Synchronous Buck Controller

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