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ISL62872HRUZ-T7 PDF预览

ISL62872HRUZ-T7

更新时间: 2024-11-13 14:51:39
品牌 Logo 应用领域
瑞萨 - RENESAS 开关
页数 文件大小 规格书
25页 668K
描述
SWITCHING CONTROLLER

ISL62872HRUZ-T7 技术参数

是否Rohs认证:符合生命周期:Transferred
包装说明:,Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.75Is Samacsys:N
模拟集成电路 - 其他类型:SWITCHING CONTROLLERJESD-609代码:e4
湿度敏感等级:1端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)
Base Number Matches:1

ISL62872HRUZ-T7 数据手册

 浏览型号ISL62872HRUZ-T7的Datasheet PDF文件第2页浏览型号ISL62872HRUZ-T7的Datasheet PDF文件第3页浏览型号ISL62872HRUZ-T7的Datasheet PDF文件第4页浏览型号ISL62872HRUZ-T7的Datasheet PDF文件第5页浏览型号ISL62872HRUZ-T7的Datasheet PDF文件第6页浏览型号ISL62872HRUZ-T7的Datasheet PDF文件第7页 
ISL62871, ISL62872  
Data Sheet  
May 8, 2014  
FN6707.1  
PWM DC/DC Controller With VID Inputs  
For Portable GPU Core-Voltage Regulator  
Features  
• Input Voltage Range: 3.3V to 25V  
• Output Voltage Range: 0.5V to 3.3V  
• Output Load up to 30A  
The ISL62871 and ISL62872 IC’s are Single-Phase  
Synchronous-Buck PWM voltage regulators featuring  
3
Intersil’s Robust Ripple Regulator (R ) Technology™. The  
wide 3.3V to 25V input voltage range is ideal for systems  
that run on battery or AC-adapter power sources. The  
ISL62871 and ISL62872 are low-cost solutions for  
applications requiring dynamically selected slew-rate  
controlled output voltages. The soft-start and dynamic  
setpoint slew-rates are capacitor programmed. Voltage  
identification logic-inputs select two (ISL62871) or four  
(ISL62872) resistor-programmed setpoint reference voltages  
that directly set the output voltage of the converter between  
0.5V to 1.5V, and up to 3.3V using a feedback voltage  
divider. Optionally, an external reference such as the DAC  
output from a microcontroller, can be used by either IC to  
program the setpoint reference voltage, and still maintain the  
controlled slew-rate features. Robust integrated MOSFET  
drivers and Schottky bootstrap diode reduce the  
• Extremely Flexible Output Voltage Programmability  
- 2-Bit VID (ISL62872) Selects Four Independent  
Setpoint Voltages  
- 1-Bit VID (ISL62871) Selects Two Independent Setpoint  
Voltages  
- Simple Resistor Programming of Setpoint Voltages  
- Accepts External Setpoint Reference Such as DAC  
• ±0.75% System Accuracy: -10°C to +100°C  
• One Capacitor Programs Soft-start and Setpoint Slew-rate  
• Fixed 300kHz PWM Frequency in Continuous Conduction  
• External Compensation Affords Optimum Control Loop  
Tuning  
• Automatic Diode Emulation Mode for Highest Efficiency  
implementation area and lower component cost.  
• Integrated High-current MOSFET Drivers and Schottky  
Boot-Strap Diode for Optimal Efficiency  
3
Intersil’s R Technology™ combines the best features of  
both fixed-frequency and hysteretic PWM control. The PWM  
frequency is 300kHz during static operation, becoming  
variable during changes in load, setpoint voltage, and input  
voltage when changing between battery and AC-adapter  
power. The modulators ability to change the PWM switching  
frequency during these events in conjunction with external  
loop compensation produces superior transient response.  
For maximum efficiency, the converter automatically enters  
diode-emulation mode (DEM) during light-load conditions  
such as system standby.  
• Choice of Overcurrent Detection Schemes  
- Lossless Inductor DCR Current Sensing  
- Precision Resistive Current Sensing  
• Power-Good Monitor for Soft-Start and Fault Detection  
• Fault Protection  
- Undervoltage  
- Overvoltage  
- Overcurrent (DCR-Sense or Resistive-Sense  
Capability)  
- Over-Temperature Protection  
- Fault Identification by PGOOD Pull-Down Resistance  
• Pb-Free (RoHS compliant)  
Applications  
• Mobile PC Graphical Processing Unit VCC rail  
• Mobile PC I/O Controller Hub (ICH) VCC rail  
• Mobile PC Memory Controller Hub (GMCH) VCC rail  
• Built-in voltage margin for system-level test  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
Copyright Intersil Americas LLC 2008, 2014. All Rights Reserved  
All other trademarks mentioned are the property of their respective owners.  

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