Datasheet > ISL95825HRZ

ISL95825HRZ

更新时间： 2024-01-21 12:55:04

品牌	Logo	应用领域
瑞萨 - RENESAS		开关
页数	文件大小	规格书
2页	195K
描述
Three Phase PWM Controller for VR12.5/VR12.6 CPUs

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技术参数
数据手册

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ISL95825HRZ 技术参数

生命周期：	Active	零件包装代码：	QFN
包装说明：	,	针数：	32
Reach Compliance Code：	compliant	风险等级：	5.71
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	Base Number Matches：	1

ISL95825HRZ 数据手册

DATA SHORT

To request the full datasheet, please visit www.intersil.com/products/isl95825

ISL95825

FN8329

Rev 0.00

December 17, 2013

Three Phases PWM Controller for VR12.5/VR12.6 CPUs

The ISL95825 Pulse Width Modulation (PWM) controller IC

provides a complete solution for VR12.5™/VR12.6™

compliant microprocessor core power supplies. It provides the

control and protection for a Voltage Regulator (VR). The VR can

operate in 3-, 2- or 1-phase configurations. The VR uses a serial

control bus to communicate with the CPU and achieve lower cost

and smaller board area.

Features

• Serial data bus

• Configurable 3-, 2- or 1-phase for the output

• R3 Modulator

- Excellent transient response

- High light load efficiency

The VR utilizes Intersil’s Robust Ripple Regulator R3

Technology™. The R3 modulator has numerous advantages

compared to traditional modulators, including faster transient

response, variable switching frequency during load transients,

and improved light load efficiency due to its ability to

automatically change switching frequency.

• 0.5% system accuracy over-temperature

• Supports multiple current sensing methods

- Lossless inductor DCR current sensing

- Precision resistor current sensing

• Differential remote voltage sensing

The ISL95825 has several other key features. It supports

either DCR current sensing with a single NTC thermistor for

DCR temperature compensation, or more precise resistor

current sensing if desired. The output comes with remote

• Resistor programmable I at start-up, voltage

, V

CCMAX BOOT

transition slew rate and switching frequency

• Adaptive body diode conduction time reduction

• Low supply current at PS4 state

voltage sense, programmable V

voltage, I

voltage

BOOT

CCMAX,

transition slew rate and switching frequency, adjustable

overcurrent protection and Power-Good signal.

Applications

• VR12.5/VR12.6 notebook and desktop computers

VDD

VIN

+5V

1.82

V_IN

LOADLINE = 1.5mΩ, V

= 1.8V, PS0

OUT

VIN

PHASE

POWER STAGE

GND

1.80

1.78

1.76

1.74

1.72

PWM3

PWM

MAX

= 6V

ISL95825

VIN

= 19V

MIN

V_CORE

PWM2

PWM PHASE

POWER STAGE

GND

= 12V

VIN

PWM

PWM1

PHASE

(A)

POWER STAGE

GND

OUT

FIGURE 1. SIMPLIFIED APPLICATION CIRCUIT

FIGURE 2. LOAD LINE REGULATION

FN8329 Rev 0.00

December 17, 2013

Page 1 of 2

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