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What you call " irrelevant question"? I am askind what is Vgd limitation for power FET and how estimate it because this parameter is not appear in datasheet?
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I every time review my posts. And lets leave it. This is not literature, but post from forum TI written by TI expert. However...
Hi,
Thank you for fast reaction!
"If V_DS = 31V and V_GS = 4V then V_GD should be -27V." This is two different situation. When V_GS = 4 V The N-Channel Mosfet is ON and voltage between Drain - Source is almost 0. Therefore V_gd = 4V(because in this case gate voltage is higher then source...
Hi,
I am interesting some basic question but from my point is not so trivial and it depends from internal structure discrete mosfets.
I am planning to use Mosfet N-channel with following parameter:
Vdsmax = 40V
Vgs = +- 20 V
Result simulation of the circuit give me following results
Vds = 31V...
Hi,
I am looking for cheap solution multiplication two low frequency (up to 10 Mhz) low voltage (up to 3V) signals.
Could you recommend me something
Thank you
Hi,
There is a power supply (5V. I avoid to call it "charger", because it simply is a power supply) and the iphone.
Inside the iphone there is the charging circuit (I rather call this a "charger").
The charging circuit inside the iPhone controls the charging current.
Because there are several...
Well I reviewed it and even BC1.2 . What I can not understand is that all paper which describing charging process, states that portable device(not charger!) should detect charger, charging port, maximum charging current and etc. But I never heard that charger uses D+/D- lane for any...
Yes I am feeling the same. Once in some paper I found that connecting voltage divider to D+/D- lanes will configure system to use charging current 1A . I connected this dividers to D+/D- lanes of iPhone charger but did not achieve willing result. Also I found simplifying schematics of Ipone...
The experiments slightly complicated.
Attached file describes experiments has been done. Below some comments.
I choose iPhone charger with ability 2.1A.
MFI controller - controller which using MFI commands to permits iPhone draws charging current 1A. As you can see in first experiment using...
Hi
It written 0.15A on 220V. Pay attention what written about 5V rail. I measured current on 5V and got 300mA only. For fast charging iPhone charger can provide 1A for iPhone and even more(I don't remeber how much) for iPad
Thank you
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Hi,
I measured maximum current iPhone...
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