打印
[其他模拟产品-信号链]

TPS3860x0四路电压监视方案

[复制链接]
2178|7
手机看帖
扫描二维码
随时随地手机跟帖
跳转到指定楼层
楼主
kakio|  楼主 | 2011-12-23 17:11 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
TI 公司的TPS3860x0系列是四路电压监视器,具有可编程延迟(1.4ms到10s)和看门狗定时器, 监视电压大于0.4V,阈值精度0.25%,非常低的静态电流(12uA),主要用在模拟加序,所有的DSP和MCU应用, 所有的FPGA/ASIC应用.本文介绍了TPS3860x0系列主要特性,方框图, 典型应用电路,以及TPS386000 和TPS386040的评估模块主要特性,电路图和所用材料清单.

Quad Supply Voltage Supervisors with Programmable Delay and Watchdog Timer

The TPS3860x0 family of voltage supervisors can monitor four power rails that are greater than 0.4V with a 0.25% (typical) threshold accuracy. Each of the four supervisory circuits (SVS-n) assert a RESETn or RESETn output signal when the SENSEm input voltage drops below the programmed threshold. With external resistors, the threshold of each SVS-n can be programmed (where n = 1, 2, 3, 4 and m = 1, 2, 3, 4L, 4H).

Each SVS-n has a programmable delay before releasing RESETn or RESETn, and the delay time can be set from 1.4ms to 10s through the CTn pin connection. Only SVS-1 has an active-low manual reset (MR) input; a logic-low input to MR asserts RESET1 or RESET1.

SVS-4 monitors the threshold window using two comparators. The extra comparator can be configured as a fifth SVS to monitor negative voltage with voltage reference output VREF.

The TPS3860x0 has a very low quiescent current of 12&mciro;A (typical) and is available in a small, 4mm x 4mm, QFN-20 package.

TPS3860x0主要特性:

4 Complete SVS Modules on 1 Silicon Platform

Programmable Delay Time: 1.4ms to 10s

Very Low Quiescent Current: 12µA typ

Threshold Accuracy: 0.25% typ

Adjustable Threshold Down to 0.4V

SVS-1: Manual Reset (MR) Input

SVS-4: Window Comparator or Low-Voltage Sensing with VREF (1.2V) Pin

Watchdog Timer with Dedicated Output

Well-Controlled RESETn Output During Power-Up

TPS386000: Open-Drain RESETn and WDO

TPS386020: Open-Drain RESETn and WDO

TPS386040: Push-Pull RESETn and WDO

TPS386060: Push-Pull RESETn and WDO

Package: 4mm x 4mm, 20-pin QFN

TPS3860x0应用:

Analog Sequencing

All DSP and Microcontroller Applications

All FPGA/ASIC Applications

图1.TPS386000 方框图

图2.TPS386020 方框图

图3.TPS386040 方框图

相关帖子

沙发
aass1| | 2011-12-23 17:18 | 只看该作者
楼主资料真是多啊

使用特权

评论回复
板凳
aass1| | 2011-12-23 17:18 | 只看该作者
方案都很不错呢

使用特权

评论回复
地板
一两研发| | 2011-12-24 10:00 | 只看该作者
这个可以直接用在我们的活动上啊,话说下次直接把手册附上呗

使用特权

评论回复
5
kakio|  楼主 | 2011-12-24 14:55 | 只看该作者
呵呵 关注下

使用特权

评论回复
6
kakio|  楼主 | 2011-12-24 14:55 | 只看该作者
看看结果如何

使用特权

评论回复
7
高亮登录| | 2011-12-24 18:31 | 只看该作者
6# kakio 你没注意到这是你自己的帖子么?

使用特权

评论回复
8
sqcumt123| | 2011-12-26 19:23 | 只看该作者
资料还是很不错的,谢谢楼主分享

使用特权

评论回复
发新帖 我要提问
您需要登录后才可以回帖 登录 | 注册

本版积分规则

0

主题

826

帖子

1

粉丝