Datasheet > ISL95835

ISL95835

更新时间： 2023-12-20 18:44:06

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
2页	186K
描述
3+1 and 1+1 Voltage Regulator for IMVP-7/VR12? CPUs

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ISL95835 数据手册

DATA SHORT

To request the full datasheet, please visit www.intersil.com/products/isl95835

ISL95835, ISL95837

FN7671

Rev 1.00

March 2, 2012

3+1 And 1+1 Voltage Regulator for IMVP-7/VR12™ CPUs

Compliant with IMVP-7/VR12™, the ISL95835 provides a

Features

complete solution for microprocessor and graphic processor

core power supply. It provides two Voltage Regulators (VRs)

with three integrated gate drivers. The first VR can be

configured as 3-, 2- or 1-phase VR while the second output is

1-phase VR, providing maximum flexibility. The two VRs share

the serial control bus to communicate with the CPU and achieve

lower cost and smaller board area compared with the two-chip

approach.

• Serial Data Bus

• Dual Outputs:

- Configurable 3-, 2- or 1-phase for the 1st Output using 2

integrated Gate Drivers

- 1-phase for the 2nd Output using an Integrated Gate

Driver

• 0.5% System Accuracy Over-Temperature

• Supports Multiple Current Sensing Methods

- Lossless Inductor DCR Current Sensing

- Precision Resistor Current Sensing

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

the PWM modulator compared to traditional modulators, has

faster transient settling time, variable switching frequency

during load transients and has improved light load efficiency

with it’s ability to automatically change switching frequency.

• Differential Remote Voltage Sensing

The ISL95835 has several other key features. Both outputs

support DCR current sensing with single NTC thermistor for

DCR temperature compensation or accurate resistor current

sensing. Both outputs come with remote voltage sense,

• Programmable V

BOOT

Voltage at Start-up

, T for Both Outputs

• Resistor Programmable I

MAX MAX

• Adaptive Body Diode Conduction Time Reduction

programmable V

voltage, programmable I ,

, T

BOOT

MAX MAX

Applications

• IMVP-7/VR12 Compliant Computers

adjustable switching frequency, OC protection and separate

Power-Good.

The ISL95837 can be considered as ISL95835 dedicated for

1+1 application. VR1 and VR2 are both 1-phase VR.

Load Line Regulation

0.91

0.90

0.89

0.88

0.87

0.86

0.85

0.84

0.83

0.82

0.81

0.80

= 19V

= 12V

= 8V

12 18 24 30 36 42 48 54 60 66

(A)

OUT

FN7671 Rev 1.00

March 2, 2012

Page 1 of 2

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