XRP7724

四通道 PWM/PFM可编程电源管理系统

Description

XRP7724是一款具有突破性的、四输出、可编程数字PWM/PFM电源管理系统。由于XRP7724大大降低了工作电流,它是业界首款可以用于手持或其它功率敏感性应用的产品。相比最快的基于比较器的模拟技术,XRP7724的专利技术可以实现的瞬态性能旗鼓相当,确保最大限度地减少所需的输入电容容量。此外,它还包含3个PSIO引脚,用于驱动负载切断MOSFET,从而实现更多的电源管理功能。

XRP7724提供的输出电压分辨率可精细到2.5mV,适合于采用先进能耗管理和电压控制技术的下一代FPGA和处理器设计。每个输出电压实现可编程,其范围为0.6V - 5.1V,无需外接元件。该器件针对每个降压转换器输出提供完善的定序方案。开关频率范围为100kHz - 1.2MHz,可以对每个通道进行独立设置,这对于2级转换而言是一个非常有用的功能。DPWM 的可编程开关频率范围很广,适于对系统效率和元件数量进行优化。

符合SMBus总线规范的 I²C接口可用于对器件进行编程,方便就故障报告和处理、监测、电压重定位、以及设置其它可编程功能和主机进行通讯。


Exar模型XRP77xxEVB-XCM和XRP77xxEVB-XPM(“评估板”)为通过使用PowerXR芯片来评估和原型新设计的设计人员提供了一个简单、快速和平价的手段,评估板只针对小量工程,而非产量。针对量产,必须使用商业程序。评估板按"现状"提供,不对任何结果,适销或目的作出保证。Exar对评估板的滥用不承担责任。

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Features

  • 4个带内置FET驱动的DPWM/DPFM开关降压控制器
    • 过采样控制专利
    • 带超声模式的DPFM 专利技术
  • 4.75V- 5.5V 或 5.5V - 25V输入电压范围
  • 0.6V - 5.5V可编程输出电压范围
  • 5个GPIO引脚
    • 3 个负载开关I/O引脚 (PSIO)
  • 通过SMBus (I²C) 接口实现完全可编程
  • 独立通道型可编程开关频率 (1X, 2X, 4X)
  • 完善的电源监测和报告功能
  • 上电/断电时序实现完全可配置
  • 完整的故障保护功能
  • 5V 50mA 内置LDO提供待机电源,且带有自动5V LDO旁路开关
  • 3.3V 50mA 内置LDO提供待机电源
  • 基于Flash的非易失性存储用于保护配置
  • 最少外部元件
  • PowerArchitect™ 5.0 交互设计工具 实现便捷配置

Application

  • 服务器
  • 基站
  • 交换机/路由器
  • 光线路卡
  • 播音设备
  • 超声设备
  • 工业控制系统
  • 自动测试系统
  • 视频监测系统
  • 视频会议系统

产品优势

  • 动态电源系统控制
  • 可配置故障管理和系统监测
  • 元件数量更少
  • 可编程配置缩短上市时间
  • 可编程、动态电源转换优化
  • 远程监控和现场可服务性
  • 防篡改安全性
  • 减少无源元件,从而提高可靠性
  • 通过定制的智能化特性如系统能耗监测或产品序号可追溯性实现产品差异化

Design Tools

Symbols & Footprints
Evaluation Hardware and Software

包装

Pkg Code Details Quantities Dimensions PDF
TQFN44 7x7
  • JEDEC Reference: MO-220
  • MSL Pb-Free: L3 @ 260ºC
  • MSL SnPb Eutectic: n/a
  • ThetaJA: 30.2ºC/W
  • Bulk Pack Style: Tray
  • Quantity per Bulk Pack: 260
  • Quantity per Reel: 3000
  • Quantity per Tube: n/a
  • Quantity per Tray: 260
  • Reel Size (Dia. x Width x Pitch): 330 x 16 x 12
  • Tape & Reel Unit Orientation: Quadrant 1
  • Dimensions: mm
  • Length: 7.00
  • Width: 7.00
  • Thickness: 0.8
  • Lead Pitch: 0.50

Parts & Purchasing

Part Number Pkg Code RoHS Min Temp Max Temp Status Buy Now Order Samples
XRP7724ILB-F TQFN44 7x7 Active
XRP7724ILBTR-F TQFN44 7x7 Active
XR77XXEVB-XCM-V62 Board Active
XRP7724EVB-DEMO-2 Board Active
XRP7724EVB-DEMO-2-KITA Kit Active
Show obsolete parts
Part Status Legend
Active - the part is released for sale, standard product.
EOL (End of Life) - the part is no longer being manufactured, there may or may not be inventory still in stock.
CF (Contact Factory) - the part is still active but customers should check with the factory for availability. Longer lead-times may apply.
PRE (Pre-introduction) - the part has not been introduced or the part number is an early version available for sample only.
OBS (Obsolete) - the part is no longer being manufactured and may not be ordered.
NRND (Not Recommended for New Designs) - the part is not recommended for new designs.

Quality Documents

Part NumberREACHReL
XRP7724ILBTR-FDownload
XRP7724Download
Additional Quality Documentation may be available, please contact customersupport@exar.com.
Distribution Date Description File
07/21/2017 Qualification of alternate assembly subcon, ANST. PCN 17-0626-01 ANST-1033.pdf
07/11/2017 Product Discontinuation Notification Product Discontinuation Notice 17-0623-02 r-1033.pdf
08/16/2013 Addition of an alternate qualified site, UTAC Thailand, for assembly using copper or gold wire, in addition to the current qualified site, Unisem Malaysia, for assembly using gold wire. Material change & additional qualified Assembly Site. PCN_13-0729-01-1033.pdf

Frequently Asked Questions

Find the product page of the part that you want to get an evaluation board for and click on Parts & Purchasing. Example:

 

Find the icons under Buy Now or Order Samples:

 
 

Click on the Buy Now icon and see who has stock and click on the Buy button:

 
 
 

Alternatively, you can click on the Order Samples

 
 

If the icons are missing, then contact Customer Support.

The best way to determine this is to go to exar.com and type the part into the search function. At or near the top of the results you should see something that looks like
 
 

In this example, we looked for XRA1201. When you hover over it, it will turn grey and you can click anywhere in the grey box. This brings you to the product page. For example:

 
 

Click on Parts & Purchasing, highlighted in yellow above. The screen changes to:

 

Notice the status column and the “Show obsolete parts” link:

 

A legend tells you the definition of the different statuses. Click on the “Show obsolete parts” link to see EOL or OBS part numbers along with the Active part numbers:

 
 

Another method to find out if a part is OBS or EOL is to click on SUPPORT:

 

And then Product Change Notifications

 
 

Type the part into the search, and click on one of the part numbers from the drop down menu. Then you can look for the Product Discontinuation Notice, which generally is at the top of the list, for example:

 
 

If you see this, it tells you that this particular orderable part has been discontinued and when the last order date is, or was. If you click on the file, then you can view the notice we sent about this if you purchased the part in the recent past. It may also advise of a replacement part. When an orderable part first becomes discontinued, Product Discontinuation Notices are sent are sent to those who have purchased the parts in the recent past, if purchased directly, with a dated opportunity to place a last order.

For best gate drive performance, it is recommended to route GL_RTN (PGND) together with its GL pin like a differential pair instead of just connecting GL_RTN to GND at the IC and subjecting it to ground noise. Routing them together cancels out any noise, inductive and electromagnetic field effects between these two traces. See ANP-32 Practical Layout Guidelines for PowerXR Designs http://www.exar.com/appnote/anp32 page 8 for more information.
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