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| 型号： | ISL6144 |
| 厂商： | Intersil Corporation |
| 英文描述： | High Voltage ORing MOSFET Controller |
| 中文描述： | 高电压的ORing MOSFET控制器 |
| 文件页数： | 1/14页 |
| 文件大小： | 404K |
| 代理商： | ISL6144 |
1
FN9131
ISL6144
High Voltage ORing MOSFET Controller
The ISL6144 ORing MOSFET Controller and a suitably
sized N-channel power MOSFET(s) increases power
distribution efficiency and availability when replacing a
power ORing diode in high current applications.
In a multiple supply, fault tolerant, redundant power
distribution system, paralleled power supplies contribute
equally to the load current through various power sharing
schemes. Regardless of the scheme, a common design
practice is to include discrete ORing power diodes to protect
against reverse current flow should one of the power
supplies develop a catastrophic output short to ground. In
addition, reverse current can occur if the current sharing
scheme fails and an individual power supply voltage falls
significantly below the others.
Although the discrete ORing diode solution has been used
for some time and is inexpensive to implement, it has some
drawbacks. The primary downside is the increased power
dissipation loss in the ORing diodes as power requirements
for systems increase. Another disadvantage when using an
ORing diode would be failure to detect a shorted or open
ORing diode, jeopardizing power system reliability. An open
diode reduces the system to single point of failure while a
diode short might pose a hazard to technical personnel
servicing the system while unaware of this failure.
The ISL6144 can be used in 10V to 75V systems and has an
internal charge pump to provide a floating gate drive for the
N-channel ORing MOSFET. The High Speed (HS)
Comparator protects the common bus from individual power
supply shorts by turning off the shorted feed’s ORing
MOSFET in less than 300ns and ensuring low reverse
current.
An external resistor-programmable detection level for the HS
Comparator allows users to set the N-channel MOSFET
“VOUT - VIN” trip point to adjust control sensitivity to power
supply noise.
The Hysteretic Regulating (HR) Amplifier provides a slow
turn off of the ORing MOSFET. This turn off is achieved in
less than 100
s when one of the sourcing power supplies is
shutdown slowly for system diagnostics, ensuring zero
reverse current. This slow turn off mechanism also reacts to
output voltage droop, degradation, or power down.
An open drain FAULT pin will indicate that a fault has
occurred. The fault detection circuitry covers different types
of failures; including dead short in the sourcing supply, a
short of any two ORing MOSFET terminals, or a blown fuse
in the power distribution path.
Features
Wide Supply Voltage Range +10V to +75V
Transient Rating to +100V
Reverse Current Fault Isolation
Internal Charge Pump allows the use of N-channel
MOSFET
HS Comparator Provides Very Fast <0.3s Response
Time to Dead Shorts on Sourcing Supply. HS Comparator
also has resistor-adjustable trip level
HR Amplifier allows Quiet, <100s MOSFET Turn Off for
Power Supply Slow Shut Down
Open Drain, Active Low Fault Output with 120s Delay
Provided in Packages Compliant to UL60950 (UL1950)
Creepage Requirements
QFN Package:
- Compliant to JEDEC PUB95 MO-220
QFN - Quad Flat No Leads - Package Outline
- Near Chip Scale Package footprint, which improves
PCB efficiency and has a thinner profile
Lead-Free Available as an Option
Applications
ORing MOSFET Control in Power Distribution Systems
N+1 Redundant Distributed Power Systems
File and Network Servers (12V and 48V)
Telecom/Datacom Systems
Ordering Information
PART #
TEMP. RANGE
(°C)
PACKAGE
PKG. DWG. #
ISL6144IV
-40 to +105
16 Ld TSSOP
M16.173
ISL6144IVZA
(See Note)
40 to +105
16 Ld TSSOP
(Lead-Free)
M16.173
ISL6144IR
-40 to +105
20 Ld 5x5 QFN L20.5x5
ISL6144IRZA
(See Note)
-40 to +105
20 Ld 5x5 QFN
(Lead-Free)
L20.5x5
NOTE: Intersil Lead-Free products employ special lead-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which is compatible with both SnPb
and lead-free soldering operations. Intersil Lead-Free products are
MSL classified at lead-free peak reflow temperatures that meet or
exceed the lead-free requirements of IPC/JEDEC J Std-020B.
Tape and Reel available. Add “T” suffix for Tape and Reel Packing
Option.
Data Sheet
February 2004
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2004. 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 |
|---|---|
| ISL6144_07 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High Voltage ORing MOSFET Controller |
| ISL6144EVAL1 | 功能描述:EVALUATION BOARD ISL6144 ORING RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| ISL6144EVAL1Z | 功能描述:EVALUATION BOARD ISL6144 ORING RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板 |
| ISL6144IR | 功能描述:IC CTRLR MOSFET HV ORING 20-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - O 圈控制器 系列:- 标准包装:1,000 系列:- 应用:电池备份，工业/汽车，大电流开关 FET 型:- 输出数:5 内部开关:是 延迟时间 - 开启:100ns 延迟时间 - 关闭:- 电源电压:3 V ~ 5.5 V 电流 - 电源:250µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:带卷 (TR) |
| ISL6144IR-T | 功能描述:IC CTRLR MOSFET HV ORING 20-QFN RoHS:否 类别:集成电路 (IC) >> PMIC - O 圈控制器 系列:- 标准包装:1,000 系列:- 应用:电池备份，工业/汽车，大电流开关 FET 型:- 输出数:5 内部开关:是 延迟时间 - 开启:100ns 延迟时间 - 关闭:- 电源电压:3 V ~ 5.5 V 电流 - 电源:250µA 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:带卷 (TR) |
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