请问Spartan-6 IO引脚允许的最大电流是多少？

我原以为FPGA引脚可以轻松驱动MOSFET栅极。
这可能取决于您的串联电阻。
FPGA的任何标准和规格都将在系列数据表中.Hereis DS162，Spartan 6的直流和开关特性。
另一个有用的文档（我相信你可以自己搜索）是Constraints Guide。
问候，
霍华德
----------“我们必须学会做的事情，我们从实践中学习。”
- 亚里士多德
在原帖中查看解决方案



以下为原文

I would have thought that an FPGA pin could easily drive a MOSFET gate. It may depend on your series resistance.
 
Any standards and specs for the FPGA will be in the family datasheet. Here is DS162, the DC and Switching Characteristics for the Spartan 6.
 
Another useful document (which I am sure you can search for yourself) is the Constraints Guide.
 
Regards,
 
Howard
 
----------
"That which we must learn to do, we learn by doing." - AristotleView solution in original post

该数据表中的表5非常清楚（在我看来）它们是相应电源的静态电流，例如：
Iccintq是内部逻辑电源上的静态电流。
任何给定IO引脚的最大允许电流输出可能取决于该引脚的IO标准，但由于引脚驱动强度通常可配置为高达24mA，因此这似乎是一个足够好的起点，可以假设为最大值。
它还取决于每个库中的引脚数量是多少，以及它们切换的速度。
你有特定的应用程序吗？
问候，
霍华德
----------“我们必须学会做的事情，我们从实践中学习。”
- 亚里士多德



以下为原文

Table 5 in that datasheet makes it pretty clear (in my opinion) that they are the Quiescent current drawn for the respective power supply, e.g. Iccintq is the quiescent current drawn on the internal logic power supply.
 
The maximum allowable current output for any given IO pin will probably depend on your IO standard for that pin but as the pin drive strengths are generally configurable up to 24mA, this seems like a good enough start point to assume as your maximum. It will also depend on how many pins in each bank are outputs and how fast they will switch.
 
Do you have a specific application in mind?
 
Regards,
 
Howard
 
----------
"That which we must learn to do, we learn by doing." - Aristotle

HiHoward，
谢谢您的回复。
我们希望FPGA能够驱动一些MOSFET并想知道它是否可以单独驱动它，或者我们应该添加一个单独的驱动器。
你知道我在哪里可以找到一组标准和相应的当前规范吗？
此外，您写道，最大值为24 mA。
你看到了什么？
链接将是非常值得建议的。
问候，



以下为原文

 
Hi Howard,
 
Thank you for your reply.
We wish the FPGA to drive some MOSFET and wanted to know if it could drive it by itself or we should add a seperate driver.
 
Do you know where I can find a group of standards and the correspondings current specification?
Moreover, you wrote that the maximum is 24 mA. Where you see that?
 
link will be very adviseable.
 
Regards,

我原以为FPGA引脚可以轻松驱动MOSFET栅极。
这可能取决于您的串联电阻。
FPGA的任何标准和规格都将在系列数据表中.Hereis DS162，Spartan 6的直流和开关特性。
另一个有用的文档（我相信你可以自己搜索）是Constraints Guide。
问候，
霍华德
----------“我们必须学会做的事情，我们从实践中学习。”
- 亚里士多德



以下为原文

I would have thought that an FPGA pin could easily drive a MOSFET gate. It may depend on your series resistance.
 
Any standards and specs for the FPGA will be in the family datasheet. Here is DS162, the DC and Switching Characteristics for the Spartan 6.
 
Another useful document (which I am sure you can search for yourself) is the Constraints Guide.
 
Regards,
 
Howard
 
----------
"That which we must learn to do, we learn by doing." - Aristotle

nissanlu写道：
HiHoward，
我们希望FPGA能够驱动一些MOSFET并想知道它是否可以单独驱动它，或者我们应该添加一个单独的驱动器。
哪个MOSFET？
我的意思是它的栅极电容是什么，它必须以什么速度切换？
从那里，您可以确定动态栅极电流要求，并从中确定是否需要外部驱动器。
另请注意，当从3.3V输出驱动时，即使逻辑电平FET也可能无法完全导通。
----------------------------是的，我这样做是为了谋生。



以下为原文

nissanlu wrote:
 
Hi Howard,
 
We wish the FPGA to drive some MOSFET and wanted to know if it could drive it by itself or we should add a seperate driver.
 

Which MOSFET? And by that I mean what is its gate capacitance and at what speed must it be switched? From there you can determine dynamic gate current requirements and from that decide if you need an external driver. also note that even a logic-level FET might not turn on completely when driven from a 3.3V output.
----------------------------Yes, I do this for a living.

是的，所有这些都很好。
我同意这方面需要仔细研究。
我的触发手指有点快，那里......
----------“我们必须学会做的事情，我们从实践中学习。”
- 亚里士多德



以下为原文

Yes, good points all of them.
 
I agree that this aspect requires a closer look. I was a little quick on the trigger finger, there ...
----------
"That which we must learn to do, we learn by doing." - Aristotle

嗨，大家好，
我想跟进那个。
我的应用程序更耗电。
我想用LVCMOS3.3 I / O驱动一条500欧姆匹配的传输线。
这意味着I / O的电阻为500欧姆，这需要3.3 / 50 = 66mA的电流。
我在数据表中找不到任何相关内容。
有关于此事的任何信息吗？
有可靠性报告吗？
我确信那会有效，但不太确定它可能对斯巴达造成的伤害。
最好的祝福，
Tsafrir Zvulun



以下为原文

Hi Guys,
I would like to follow up on that one. My application is a bit more current consuming. I would like to drive a 50Ohm matched transmission line out of LVCMOS3.3 I/O. It means that the I/O sees 50Ohm resistance, which requires a 3.3/50=66mA current. I couldn't find anything about  that in the datasheet. Is there any information available on the matter? Are there any reliability reports? I'm sure that that's gonna work, but not so sure about the damage it may cause the Spartan.
 
Best Regards,
Tsafrir Zvulun

有任何想法吗？



以下为原文

Any ideas?