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ISL95866

更新时间： 2024-11-06 14:56:15
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瑞萨 - RENESAS /
页数 文件大小 规格书
2页 204K
描述
4+3 Multiphase R3? PWM Regulator for Intel IMVP8? Desktop CPUs with SMBus Support

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ISL95866 数据手册

 浏览型号ISL95866的Datasheet PDF文件第2页 
DATA SHORT  
To request the full datasheet, please visit www.intersil.com/products/ISL95866  
ISL95866  
FN8821  
Rev 0.00  
November 28, 2016  
4+3 Multiphase R3™ PWM Regulator for Intel IMVP8™ Desktop CPUs with  
SMBus Support  
Compliant with Intel IMVP8™, the ISL95866 provides a  
Features  
complete power solution for desktop microprocessors  
• Supports Intel serial data bus interface  
supporting the core (IA), graphics (GT), or unsliced graphics  
(GTUS or GTX). The controller provides control and protection  
for two Voltage Regulators (VR). The first VR 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.  
2
• SMBus/PMBus/I C interface with SVID conflict free  
- DROOP, OVP, and OCP enable/disable  
- Voltage offset adjustment  
• Green hybrid digital R3™ modulator  
- Excellent transient response  
- Phase shedding with power state selection  
- Diode emulation in single-phase for high light-load  
efficiency  
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.  
• Dual output controller  
- 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  
The ISL95866 has several other key features. The controller  
features three integrated +12V gate drivers with two on the  
VR A 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,  
• 0.5% system accuracy over-temperature  
• Supports multiple current-sensing methods  
- Lossless inductor DCR current sensing  
- Precision resistor current sensing  
• Differential remote voltage sensing  
programmable I  
, adjustable switching frequency, OC  
MAX  
• Resistor programmable address selection, I  
switching frequency for both outputs  
, and  
MAX  
protection, and single VR_READY power-good indicator. The  
ISL95866 features an SMBus interface, which supports  
enabling or disabling droop, output voltage offset adjustment,  
and disabling of OVP and OCP protections.  
• Adaptive body diode conduction time reduction  
Applications  
• IMVP8™ compliant desktops  
Related Literature  
• For a full list of related documents, visit our website  
- ISL95866 product page  
100  
90  
100  
90  
80  
80  
PS1  
PS0  
PS0  
PS1  
PS2  
70  
60  
50  
40  
70  
PS2  
60  
50  
40  
0
10  
20  
30  
40  
50  
60  
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
LOAD CURRENT (A)  
LOAD CURRENT (A)  
FIGURE 2. 3-PHASE EFFICIENCY vs LOAD  
FIGURE 1. 4-PHASE EFFICIENCY vs LOAD  
FN8821 Rev 0.00  
November 28, 2016  
Page 1 of 2  
12

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