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| 型号： | PX3511BDDG |
| 厂商： | Intersil |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC DRVR SYNC BUCK HF 10-DFN |
| 标准包装： | 100 |
| 配置： | 高端和低端，同步 |
| 输入类型： | PWM |
| 延迟时间： | 10ns |
| 电流 - 峰： | 1.25A |
| 配置数： | 1 |
| 输出数： | 2 |
| 高端电压 - 最大（自引导启动）： | 36V |
| 电源电压： | 10.8 V ~ 13.2 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN（3x3） |
| 包装： | 管件 |
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PX3511A, PX3511B
Data Sheet
February 26, 2007
FN6462.0
Advanced Synchronous Rectified Buck
MOSFET Drivers with Protection Features
The PX3511A and PX3511B are high frequency MOSFET
drivers specifically designed to drive upper and lower power
N-Channel MOSFETs in a synchronous rectified buck
converter topology. These drivers combined with the
ISL6595 Digital Multi-Phase Buck PWM controller and
N-Channel MOSFETs form a complete core-voltage
regulator solution for advanced microprocessors.
The PX3511A drives the upper gate to 12V, while the lower
gate can be independently driven over a range from 5V to
12V. The PX3511B drives both upper and lower gates over a
range of 5V to 12V. This drive-voltage provides the flexibility
necessary to optimize applications involving trade-offs
between gate charge and conduction losses.
An adaptive zero shoot-through protection is integrated to
prevent both the upper and lower MOSFETs from conducting
simultaneously and to minimize the dead time. These
products add an overvoltage protection feature operational
before VCC exceeds its turn-on threshold, at which the
PHASE node is connected to the gate of the low side
MOSFET (LGATE). The output voltage of the converter is
then limited by the threshold of the low side MOSFET, which
provides some protection to the microprocessor if the upper
MOSFET(s) is shorted during initial start-up.
These drivers also feature a three-state PWM input which,
working together with Intersil’s multi-phase PWM controllers,
prevents a negative transient on the output voltage when the
output is shut down. This feature eliminates the Schottky
diode that is used in some systems for protecting the load
from reversed output voltage events.
Features
? Dual MOSFET Drives for Synchronous Rectified Bridge
? Adjustable Gate Voltage (5V to 12V) for Optimal Efficiency
? 36V Internal Bootstrap Schottky Diode
? Bootstrap Capacitor Overcharging Prevention
? Supports High Switching Frequency (up to 2MHz)
- 3A Sinking Current Capability
- Fast Rise/Fall Times and Low Propagation Delays
? Three-State PWM Input for Output Stage Shutdown
? Three-State PWM Input Hysteresis for Applications With
Power Sequencing Requirement
? Pre-POR Overvoltage Protection
? VCC Undervoltage Protection
? Expandable Bottom Copper Pad for Enhanced Heat
Sinking
? Dual Flat No-Lead (DFN) Package
- Near Chip-Scale Package Footprint; Improves PCB
Efficiency and Thinner in Profile
? Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
? Core Regulators for Intel? and AMD? Microprocessors
? High Current DC/DC Converters
? High Frequency and High Efficiency VRM and VRD
Related Literature
? Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
? Technical Brief TB417 for Power Train Design, Layout
Guidelines, and Feedback Compensation Design
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PX3511BDDG-RA | 功能描述:IC DRVR SYNC BUCK HF 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:6,000 系列:* |
| PX3511D | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Advanced Synchronous Rectified Buck MOSFET Driver with Protection Features |
| PX3511DDDG-RA | 功能描述:IC DRVR SYNC BUCK HF 10-DFN RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:6,000 系列:* |
| PX3515BDDGR4XTMA1 | 制造商:Infineon Technologies AG 功能描述: 制造商:Infineon Technologies AG 功能描述:LV IC - Tape and Reel |
| PX3515BDDGR4XUMA1 | 制造商:Infineon Technologies AG 功能描述:LV IC - Tape and Reel |
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