Salvaged resolver chips

[arber333]

Since i took brain boards off my Ampera and Prius inverters i decided to look them up more closely.
I found two resolver AD chips on each board.
On Ampera Volt board there are 2x ADW71205YSTZ
https://eu.mouser.com/ProductDetail/Ana ... FuHQ%3D%3D

On Prius inverter i found 2x Tamagawa resolver chips AU6802N1.
https://download.siliconexpert.com/pdfs ... manual.pdf

The first is applicable for ABZ encoder conversions. Second one has option for ABZ as well as UVW commutation outputs. Hah! I could make an interface that would be applicable both to Johannes as well as Lebowski boards!

Johannes or anyone, can you help me with excitation stage for this chip? Do you think i could use your schematic for ext section? ext! would connect to GND then. Do you think it would work in the same way as it works with Johanness main board?

[kiwifiat]

Since i took brain boards off my Ampera and Prius inverters i decided to look them up more closely.
I found two resolver AD chips on each board.
On Ampera Volt board there are 2x ADW71205YSTZ
https://eu.mouser.com/ProductDetail/Ana ... FuHQ%3D%3D

On Prius inverter i found 2x Tamagawa resolver chips AU6802N1.
https://download.siliconexpert.com/pdfs ... manual.pdf

The first is applicable for ABZ encoder conversions. Second one has option for ABZ as well as UVW commutation outputs. Hah! I could make an interface that would be applicable both to Johannes as well as Lebowski boards!

Johannes or anyone, can you help me with excitation stage for this chip? Do you think i could use your schematic for ext section? ext! would connect to GND then. Do you think it would work in the same way as it works with Johanness main board?

Yes, I posted about those back in July last year on ES and told you about the Ampera ADW71205YSTZ's by pm earlier this year so it is great you are following up on them.

I am using the excitation design straight from this document:

https://www.analog.com/media/en/analog- ... locity.pdf

You can also look at the app note for the AD2S1205 evaluation board here:

https://www.analog.com/media/en/technic ... ug-365.pdf

[arber333]

Yes, I posted about those back in July last year on ES and told you about the Ampera ADW71205YSTZ's by pm earlier this year so it is great you are following up on them.

I am using the excitation design straight from this document:

https://www.analog.com/media/en/analog- ... locity.pdf

You can also look at the app note for the AD2S1205 evaluation board here:

https://www.analog.com/media/en/technic ... ug-365.pdf

I see, thanks. It is a lot of elements though. I dont think i have the space left on my board. I may just design a module board to be put over it.
EDIT: I just noticed AD8397, thanks for the info, this should really simplify the circuit thanks.

Which voltage do you use for excitation? Is it 5V regulated or 12V from the car (it would be 13.8Vdc then or what)? Or do you have dedicated PSU for that? Which one? Would i have to use isolated supply?

[arber333]

Ok i quickly made a circuit that i could use to drive my Lebowski inverter. I will try first and then publish my design.
There are 5V plane and 12V plane. I intend to use one nonisolated 5V to 12V boost converter. I think 500mA should be enough?
Or i can use this one, but i have to correct pinout. https://www.ebay.co.uk/itm/DC-Converter ... YUtlQsjBaQ
I prepared I/Os to get either UVW or ABZ outputs. That should work even for Pauls controler.

Also i will order like 5 Boards of which i will take one for myself. If you are interested i can then send one of those to someone interested.

[kiwifiat]

I see, thanks. It is a lot of elements though. I dont think i have the space left on my board. I may just design a module board to be put over it.
EDIT: I just noticed AD8397, thanks for the info, this should really simplify the circuit thanks.

Which voltage do you use for excitation? Is it 5V regulated or 12V from the car (it would be 13.8Vdc then or what)? Or do you have dedicated PSU for that? Which one? Would i have to use isolated supply?

I am using 12V for excitation derived from the 5V supply.

[kiwifiat]

Ok i quickly made a circuit that i could use to drive my Lebowski inverter. I will try first and then publish my design.
There are 5V plane and 12V plane. I intend to use one nonisolated 5V to 12V boost converter. I think 500mA should be enough?
Or i can use this one, but i have to correct pinout. https://www.ebay.co.uk/itm/DC-Converter ... YUtlQsjBaQ
I prepared I/Os to get either UVW or ABZ outputs. That should work even for Pauls controler.

Also i will order like 5 Boards of which i will take one for myself. If you are interested i can then send one of those to someone interested.

I am sure 500mA will be fine. Do you realise that if you are going to use the three highest bits of the parallel output as UVW signals you also have to clock the resolver chip to get it to do the sample and then place it on the parallel data bus? To do that you need another micro to generate the required clock sequence for the resolver chip. Have you thought about switching to KiCad for your designs? It is opensource.

I am disinclined to use anything sourced from china in an inverter for a car. Too many low quality knockoff chips that I just don't trust, better to design a boost converter using an IC from a major company and sourced from a reputable supply in my opinion.

[arber333]

I am sure 500mA will be fine. Do you realise that if you are going to use the three highest bits of the parallel output as UVW signals you also have to clock the resolver chip to get it to do the sample and then place it on the parallel data bus? To do that you need another micro to generate the required clock sequence for the resolver chip. Have you thought about switching to KiCad for your designs? It is opensource.

I am disinclined to use anything sourced from china in an inverter for a car. Too many low quality knockoff chips that I just don't trust, better to design a boost converter using an IC from a major company and sourced from a reputable supply in my opinion.

Hm... i will not be using the bus. Only UVW or ABZ digital outputs in pulse mode. I will go back and draw an external clock. I totaly forgot about the recommended crystal oscilator.

I got used to designspark and dont really have the time to learn new design interface. Maybe i will try to learn on vacation .

A

[kiwifiat]

Hm... i will not be using the bus. Only UVW or ABZ digital outputs in pulse mode. I will go back and draw an external clock. I totaly forgot about the recommended crystal oscilator.

I got used to designspark and dont really have the time to learn new design interface. Maybe i will try to learn on vacation .

A

I can't tell from your PCB if you are using an AD chip or the Tamagawa chip? The Analog Devices chip requires not only an oscillator but clocking of the CS and Sample pins.

Johannes is there any chance you could port your current resolver code down to a lower spec ARM chip and output UVW based on pole pairs and number of lobes on the resolver?

[arber333]

I use Tamagawa resolver chips AU6802N1 with proposed datasheet circuit. I didnt change a thing. I will post design when i try it here.
This should have UVW as well as ABZ pulse signal.

[Bazar]

Здравствуйте вы закончили работу по этому проекту

English: Hello, are you finished with this project?