Troubleshooting PT2000

[rmaier]

Hello,

I am working with the PT2000 using the KITPT2000FRDM3C evaluation board. I am unable to get the provided example to work, and I was hoping to get some help with this. - I was able to get the KL25Z setup and connected to SPIGen. - I can successfully download the micro code provided per the instructions (SPIGenMC33PT2000Files.txt). - I can launch a batch command to continuously toggle START1. (Verified by scope). - If I power up the PT2000 with 12V and plug in USB, no FLAGS (LEDs) are on. They only light up after downloading code. Problem: I am not getting anything on the injectors. I only have one injector connected to INJ1. I have tried with DRVEN and RESETB high and low. All FLAG LEDS are on as is USB power and 5V. I am providing 13.7V with a 10A power supply. I don't fully grasp the complete operation of this IC, so I can't really diagnose myself yet. Any help would be greatly appreciated.

Edit: I should also mention that the there is no boost regulation either. It's also at 13.7V.

Thanks, Robert Maier

[dongpanhao]

Have you solved the problem you encountered? I have the same problem！Can you help me solve it?

[rmaier]

I marked the solution. The IC had an older key. The solution was to replace the IC with a newer one provided by NXP.

Good luck.

Robert

[dongpanhao]

Is there a problem with the chip or is the user destroying the chip?Can you tell me your email address?

[rmaier]

The problem is that the older ICs have a different key. The Windows PC side has the newer key. If you got your eval board from an online distributor, then you may have an old key (like I had).

[rmaier]

Bump this topic.

[rmaier]

Hello Jose,

Thank you for your help. I have checked everything on DRVEN. Both in the SPIGen (High and Low) through the single command and microcode. I have also verified by scope that the DRVEN is being driven as expected.

I do not see "Enable Flash on CH1 and CH2". I see "Enable Flash on All Channels" (See screenshot). Is there something else?

Thanks,

Robert Maier

[reyes]

Hi Robert,

Please make sure the DRVEN signal on the “Single Command” or “Microcode”page is set to High.

If this does not work, then, after clicking on Download All, make sure to click on Enable Flash on CH1 and CH2.

Regards,

Jose

[reyes]

Hi,

Once you clock on the “Enable Flash on CH1 and CH2” or “Enable Flash on All Channels” button to run the code, the channels should be operational.

Did you follow step-by-step all the instruction from sections 5.3 and 5.4 of the board user guide?

https://www.nxp.com/docs/en/user-guide/KTPT2000FRDM3CUG.pdf

[rmaier]

Jose,

I tried that as well. I followed the documentation as well as I could. Not everything is clear or correct. I didn't find any "Injector Demo Files" directory per the instructions, so I had to search the files I downloaded manually for the same names. I followed section 5.3 and 5.4 line by line. The microcode is shown (per SPIGen) to be successfully flashed. I see SPI stream via scope as well when sending micro code.

Robert

[reyes]

Hi,

From our Applications team:

You need to read the flash enable register for all channels and see if the following bits are set and that there are no checksum failures.

The register read values should look like this:

Since the boost converter is not working there could be an error on that channel. There will also not be enough voltage to actuate the injector.

Regards,

Jose

[rmaier]

Hello Jose,

This appears to be the issue. Here is what I see for each channel after reading SPI:

I do not get any failure message while downloading the micro code. Is there something I can do to fix this?

Regards,

Robert Maier

[reyes]

Hi,

I discussed with the Apps team and they told me that most likely, sense since all 3 channels have a checksum failure, you have an old part with a different key as the one coming with the IDE.

Our recommendation is to replace the unit with latest part from the web.

https://www.nxp.com/products/power-management/motor-and-solenoid-drivers/powertrain-and-engine-contr...

Regards,

Jose

[rmaier]

Are you saying I need to buy another PT2000 and rework the PCB for the new IC? It's kind of sounding like I wasted time and money with this eval kit.

[reyes · Accepted solution]

Hi,

Unfortunately, due the issue you are seen, it seems to be the case that the PT2000 is an old version, so, the best way to solve it is replacing the device on the board. You can check with your board distributor to see if they can send you a replacement or you can ask for a PT2000 sample to replace it in your board. Check if you can order samples from this link: https://www.nxp.com/products/power-management/motor-and-solenoid-drivers/powertrain-and-engine-contr...

Regards,

Jose