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64-Channel High-Voltage

lufer17

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Hello I am having difficulties regarding finding information related to a STHV64SW chip, information such as channel size, oxide thickness, which materials have to be made, size. Someone know how to guide me to find this information.
 

KlausST

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Hi,

On the internet site there is
* a datasheet
* an application note
* an evaluation board with documentation
* maybe other documents

Did you read through them all?

But almost no manufacturer provides informations about internal construction. Why do you think you need this informations? To build a clone?

Klaus
 

lufer17

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Hi,

On the internet site there is
* a datasheet
* an application note
* an evaluation board with documentation
* maybe other documents

Did you read through them all?

But almost no manufacturer provides informations about internal construction. Why do you think you need this informations? To build a clone?

Klaus
Simply search. I know that computer processors have this information, but when outside that area it is very difficult to know.


See the attachment, talks about technical characteristics, but the internal part of the chip (wafer), channel width, type of matrix used, etc.

Mere Example: https://fineartamerica.com/featured...ask-abstract-composition-1-kathy-anselmo.html
 

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KlausST

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Hi,

when I follow your link I just see an advertisement for a T-shirt.
The print on the T-shirt shows a processor from the 1970ies. No technical details about IC manufacturing.

Klaus
 

dick_freebird

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Manufacturers seldom give out details but you may
sometimes find such info "escaping" through their
reliability reports (which will call out their name for
the process flow) and follow that thread to find any
other stray bits of info about technology attributes.

You can make some guesses about geometries like

- about 6V/um of "Leff" for breakdown (abs max
pin-pin on the switches)

- 7MV/cm on the gate oxide, which would be switch
pins to VS-, VS+ abs max rating, for a single symmetric
lateral MOSFET in an analog switch.

Die size should be called out in a die-level product
datasheet if the manufacturer does that kind of
business. Starting material and construction you
may (or not) find in those reliability reports (if the
mfr puts those on their product web pages).

I see little of that on ST's pages.

The technology info I see on the datasheet front page
makes me think this is a 3.3V BCDMOS technology that
uses some cleverness to drive NMOS high side switches.
Those switches may not have as thick an oxide as a
regular analog switch because the function is not
bidirectional, rather a high-side power switch, so a
LDMOS could do the job. Tox could be as low as 90A or
so.

You could probably learn some stuff if you removed
the encapsulant over the die and took a look through
a microscope.


Hello I am having difficulties regarding finding information related to a STHV64SW chip, information such as channel size, oxide thickness, which materials have to be made, size. Someone know how to guide me to find this information.
 

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