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ISL6377

更新时间： 2024-11-22 14:58:03
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
37页 1950K
描述
AMD Fusion Desktop CPUs Using SVI 2.0

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中文翻译

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ISL6377 数据手册

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DATASHEET  
ISL6377  
FN8336  
Rev 1.00  
Nov 2, 2015  
Multiphase PWM Regulator for AMD Fusion Desktop CPUs Using SVI 2.0  
The ISL6377 is fully compliant with AMD Fusion™ SVI 2.0 and  
Features  
provides a complete solution for microprocessor and graphics  
• Supports AMD SVI 2.0 serial data bus interface  
processor core power. The ISL6377 controller supports two  
Voltage Regulators (VRs) with three integrated gate drivers and  
three optional external drivers for maximum flexibility. The Core  
VR can be configured for 4-, 3-, 2-, or 1-phase operation while the  
Northbridge VR supports 2- or 1-phase configurations. The two  
VRs share a serial control bus to communicate with the AMD CPU  
and achieve lower cost and smaller board area compared with  
two-chip solutions.  
- Serial VID clock frequency range 100kHz to 25MHz  
• Dual output controller with integrated drivers  
- Two dedicated core drivers  
- One programmable driver for either core or Northbridge  
• Precision voltage regulation  
- 0.5% system accuracy over-temperature  
- 0.5V to 1.55V in 6.25mV steps  
- Enhanced load line accuracy  
The PWM modulator is based on Intersil’s Robust Ripple  
Regulator R3™ technology. Compared to traditional modulators,  
the R3 modulator can automatically change switching frequency  
for faster transient settling time during load transients and  
improved light-load efficiency.  
• Supports multiple current sensing methods  
- Lossless inductor DCR current sensing  
- Precision resistor current sensing  
The ISL6377 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 utilize remote voltage sense, adjustable  
switching frequency, OC protection and power-good.  
• Programmable 1-, 2-, 3- or 4-phase for the core output and  
1- or 2-phase for the Northbridge output  
• Adaptive body diode conduction time reduction  
• Superior noise immunity and transient response  
• Output current and voltage telemetry  
Applications  
• AMD fusion CPU/GPU core power  
• Differential remote voltage sensing  
• Desktop computers  
• High efficiency across entire load range  
• Programmable slew rate  
• Programmable VID offset and droop on both outputs  
• Programmable switching frequency for both outputs  
• Excellent dynamic current balance between phases  
• Protection: OCP/WOC, OVP, PGOOD and thermal monitor  
• Small footprint 48 Ld 6x6 QFN package  
- Pb-free (RoHS compliant)  
Core Performance  
100  
1.12  
1.10  
1.08  
1.06  
90  
80  
V
= 8V  
IN  
70  
60  
50  
40  
30  
20  
10  
0
V
= 12V  
IN  
V
= 8V  
IN  
1.04  
1.02  
1.00  
0.98  
0.96  
V
= 12V  
IN  
V
CORE = 1.1V  
OUT  
V
CORE = 1.1V  
OUT  
0
5
10 15 20 25 30 35 40 45 50 55  
(A)  
0
5
10 15 20 25 30 35 40 45 50 55  
I
OUT  
I
(A)  
OUT  
FIGURE 2. V  
OUT  
vs LOAD  
FIGURE 1. EFFICIENCY vs LOAD  
FN8336 Rev 1.00  
Nov 2, 2015  
Page 1 of 37  
1234567...37

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