topic MC33PT2000 use issues in Power Management

MC33PT2000 use issues

yuanguangyi — Sat, 20 Jul 2019 09:17:22 GMT

We are a company in Pudong. We are using your MC33PT2000 chip, but we have some problems in the process of using it.

1. The new board is abnormal when PT2000 is used.

2. PT2000 has not been able to increase the pressure. Or it can't go up after loading.

3. PT2000 has the problem of burning chips, and this problem has occurred more than once.

4. Our contact information is 150-0025-6530. Is it convenient to contact us?

5. my e-mail is yuanguangyi@puzhitech.com

我们是浦东的一家公司，我们正在使用贵司的MC33PT2000这颗芯片，但是我们在使用过程中出现一些问题。

1.新回来的板子，用着用着PT2000就不正常了。

2.PT2000出现升压升不上去。或者加了负载以后升不上去。

3.PT2000出现烧芯片问题，而且不止一次出现这个问题。

4.我们的联系方式是150-0025-6530，请问方便联系我们一下吗？

5.我的邮箱是 yuanguangyi@puzhitech.com

谢谢！

Re: MC33PT2000 use issues

TomasVaverka — Mon, 22 Jul 2019 07:49:48 GMT

Hi Quangyi,

Couple of questions to better understand the issue you are facing:

1. The new board is abnormal when PT2000 is used.

>> What is the difference between your old and new board? Can you share their schematics? Does the issue appear on all your new boards?

2. PT2000 has not been able to increase the pressure. Or it can't go up after loading.

>> What is actually the load and what pre-driver/MOSFET are you talking about? Do you have any oscilloscope plots illustrating unexpected behavior? Can you share your requirements/settings?

3. PT2000 has the problem of burning chips, and this problem has occurred more than once.

>> What is the occurrence rate and is the PT2000 or an external MOSFET burned?

Best regards,

Tomas

Re: MC33PT2000 use issues

yuanguangyi — Mon, 22 Jul 2019 11:25:46 GMT

hello，Tomas：

1. The new board is abnormal when PT2000 is used.

>> What is the difference between your old and new board? Can you share their schematics? Does the issue appear on all your new boards?

---- this is frist time we use PT2000.

2. PT2000 has not been able to increase the pressure. Or it can't go up after loading.

>> What is actually the load and what pre-driver/MOSFET are you talking about? Do you have any oscilloscope plots illustrating unexpected behavior? Can you share your requirements/settings?

---- i think the problem is feedback of vboost,but i don't know how to debug .

my email is yuanguangyi@puzhitech.com,can we talk with email?

3. PT2000 has the problem of burning chips, and this problem has occurred more than once.

>> What is the occurrence rate and is the PT2000 or an external MOSFET burned?

---- yes , we burned mos one time