Datasheet > ISL95856

ISL95856

更新时间： 2023-12-20 18:44:31

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
2页	203K
描述
4+3 Multiphase PWM Regulator for Intel IMVP8? Desktop CPUs

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ISL95856 数据手册

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To request the full datasheet, please visit www.intersil.com/products/ISL95856

ISL95856

FN8728

Rev 2.00

June 3, 2016

4+3 Multiphase PWM Regulator for Intel IMVP8™ Desktop CPUs

Compliant with Intel IMVP8™, the ISL95856 provides a

Features

complete power solution for desktop microprocessors

supporting both the core (IA) and graphics (GT) rails. The

controller provides control and protection for one Voltage

Regulator (VR), which can be configured for 4-, 3-, 2- or

1-phase operation. The second VR is configurable for 3-, 2- or

1-phase operation. The VRs feature a programmable SVID

address to allow maximum flexibility in supporting desktop

processor SKUs. Both controller outputs share a common serial

control bus to communicate with the CPU and achieve lower cost

and smaller board area compared with a two-chip approach.

• Supports Intel serial data bus interface

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

• Green hybrid digital R3™ modulator

- Excellent transient response

- Phase shedding with power state selection

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

efficiency

• Dual output controller

Based on Intersil’s Robust Ripple Regulator R3™ technology,

the R3™ modulator has many advantages compared to

traditional modulators. These include faster transient settling

time, variable switching frequency in response to load

transients and improved light-load efficiency due to diode

emulation mode with load-dependent low switching frequency.

- Voltage regulator A: 4-, 3-, 2-, or 1-phase designs with two

+12V integrated gate drivers

- Voltage regulator B: 3-, 2-, or 1-phase designs with one

+12V integrated gate driver

• 0.5% system accuracy over-temperature

• Supports multiple current sensing methods

- Lossless inductor DCR current sensing

- Precision resistor current sensing

The ISL95856 has several other key features. The controller

features three integrated +12V gate drivers with two drivers on

the VR B output. The controller supports either DCR current

sensing with a single NTC thermistor for DCR temperature

compensation or more precision through resistor current

sensing, if desired. Both outputs feature remote voltage sense,

• Differential remote voltage sensing

• Resistor programmable address selection, I

switching frequency for both outputs

and

MAX

programmable I

, adjustable switching frequency, OC

MAX

protection and single VR_READY power-good indicator.

• Adaptive body diode conduction time reduction

Applications

• IMVP8™ compliant desktops

100

PS1

PS0

PS2

PS1

PS2

LOAD CURRENT (A)

FIGURE 1. EFFICIENCY vs LOAD

FIGURE 2. V vs LOAD

OUT

FN8728 Rev 2.00

June 3, 2016

Page 1 of 2

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ISL95857A	RENESAS	1+2+1 Voltage Regulator for Intel IMVP8? CPUs	获取价格
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