Datasheet > ISL95820

ISL95820

更新时间： 2025-07-18 14:57:51

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瑞萨 - RENESAS		/
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2页	193K
描述
Green Hybrid Digital Four Phase PWM Controller for Intel VR12.5? CPUs

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ISL95820 数据手册

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To request the full datasheet, please visit www.intersil.com/products/isl95820

ISL95820

FN8318

Rev 1.00

October 15, 2013

Green Hybrid Digital Four Phase PWM Controller for Intel VR12.5™ CPUs

The ISL95820 Pulse Width Modulation (PWM) controller IC

Features

provides a complete low-cost solution for Intel VR12.5™

• Serial data bus

compliant microprocessor core power supplies. It provides the

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

incorporates 3 integrated drivers and can operate in 4-, 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.

• SMBus/PMBus/I C interface with SVID conflict free

• Configurable 4-, 3-, 2- or 1-phase for the output using three

integrated gate drivers

• Green Hybrid Digital R3™ modulator

- Excellent transient response

The VR utilizes Intersil’s Robust Ripple Regulator R3

- Phase shedding with power state selection

Technology™. The R3™ modulator has many advantages

compared to traditional modulators, including faster transient

response, variable switching frequency in response to load

transients, and improved light load efficiency due to diode

emulation mode with load-dependent low switching frequency.

- Diode emulation in single-phase for high light-load

efficiency

• 0.5% system accuracy over-temperature

• Supports multiple current sensing methods

- Lossless inductor DCR current sensing

- Precision resistor current sensing

The ISL95820 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; remote voltage sense;

• Differential remote voltage sensing

• Programmable V

BOOT

voltage at start-up

, load line, diode emulation,

programmable V

voltage, I

voltage transition slew

BOOT

MAX,

rate and switching frequency; adjustable overcurrent

protection; and Power-Good signal.

• Resistor programmable I

MAX

slope compensation, and switching frequency

• Adaptive body diode conduction time reduction

Applications

• Intel VR12.5 desktop computers

V_IN

PHASE4

INTERSIL

DRIVER

V_IN

V_CORE

PHASE3

ISL95820

V_IN

PHASE2

V_IN

PHASE1

FIGURE 1. SIMPLIFIED APPLICATION CIRCUIT

FN8318 Rev 1.00

October 15, 2013

Page 1 of 2

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ISL95824HRZ-T	RENESAS	获取价格	4+2 Multiphase PWM Regulator for Intel IMVP8™ Desktop CPUs
ISL95824IRZ	RENESAS	获取价格	4+2 Multiphase PWM Regulator for Intel IMVP8™ Desktop CPUs
ISL95824IRZ-T	RENESAS	获取价格	4+2 Multiphase PWM Regulator for Intel IMVP8™ Desktop CPUs
ISL95825HRZ	RENESAS	获取价格	Three Phase PWM Controller for VR12.5/VR12.6 CPUs
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