参数资料
| 型号： | ISL6277IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 1/37页 |
| 文件大小： | 0K |
| 描述： | IC PWM REG MULTIPH AMD 48-QFN |
| 标准包装： | 4,000 |
| 应用： | 控制器，AMD Fusion? SVI 2.0 CPU GPU |
| 输入电压： | 4.5 V ~ 25 V |
| 输出数： | 2 |
| 输出电压： | 0.006 V ~ 1.55 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 供应商设备封装： | 48-QFN（6x6） |
| 包装： | 带卷 (TR) |
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Multiphase PWM Regulator for AMD Fusion? Mobile
CPUs Using SVI 2.0
ISL6277
The ISL6277 is fully compliant with AMD Fusion? SVI 2.0 and
provides a complete solution for microprocessor and graphics
processor core power. The ISL6277 controller supports two
Voltage Regulators (VRs) with three integrated gate drivers and
two optional external drivers for maximum flexibility. The Core VR
can be configured for 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.
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.
The ISL6277 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.
Applications
? AMD Fusion CPU/GPU Core Power
? Notebook Computers
Features
? Supports AMD SVI 2.0 Serial Data Bus Interface
? 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
? Supports Multiple Current Sensing Methods
- Lossless Inductor DCR Current Sensing
- Precision Resistor Current Sensing
? Programmable 1-, 2- or 3-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 Monitor and Thermal Monitor
? Differential Remote Voltage Sensing
? 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
? OCP/WOC, OVP, PGOOD, and Thermal Monitor
? Small Footprint 48 Ld 6x6 QFN Package
- Pb-Free (RoHS Compliant)
Core Performance
100
1.12
90
80
70
60
50
V IN = 19V
V IN = 12V
V IN = 8V
1.10
1.08
1.06
1.04
V IN = 8V
40
30
20
1.02
1.00
V IN = 12V
V IN = 19V
10
0
0
5
10
15
20
V OUT CORE = 1.1V
25 30 35 40 45 50
55
0.98
0.96
0
V OUT CORE = 1.1V
5 10 15 20
25
30
35
40
45
50
55
I OUT (A)
FIGURE 1. EFFICIENCY vs LOAD
I OUT (A)
FIGURE 2. V OUT vs LOAD
March 8, 2012
FN8270.1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2012. All Rights Reserved
Intersil (and design) and R3 Technology are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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| ISL62870HRUZ-T | 功能描述:IC REG CTRLR BUCK PWM 16-TQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:Robust Ripple Regulator™ (R³) 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
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