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Hi Infineon's friends:

Attached is the schematic diagram of our TLE9183. I would like to ask you to help review the following to see if there are any unreasonable points, thank you!

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/td-p/648183

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Hello,

There are probably the following points to pay attention to:

1. CL1 needs to be connected to the ground with a 100K resistor to protect against possible negative voltage.

2. The VDHP pin capacitor discharges 1uF. This is powered by a two-stage charge pump.

3. The VDHx series resistance needs to be larger. 5K is recommended for this main protection against possible short circuits.

4. The bus capacitance on the bridge is a bit small. I don't know if it's because your motor power is very low. 4.7uF should not be enough.

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/m-p/650252

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Translation_Bot
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Hello,

There are probably the following points to pay attention to:

1. CL1 needs to be connected to the ground with a 100K resistor to protect against possible negative voltage.

2. The VDHP pin capacitor discharges 1uF. This is powered by a two-stage charge pump.

3. The VDHx series resistance needs to be larger. 5K is recommended for this main protection against possible short circuits.

4. The bus capacitance on the bridge is a bit small. I don't know if it's because your motor power is very low. 4.7uF should not be enough.

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/m-p/650252

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Hi Forestman:

We also have the following questions,

1. The additional diode is to protect negative pressure. What is the principle of 100k to protect negative pressure?

3. Does this cause sampling delays? After all, SCD is a US response speed

4. Thanks, after the change, our bus capacitor has a 1800uf electrolytic capacitor

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/m-p/650867

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1. Sorry, there is a typo here. Cl1 plus 100k resistor to ground here is not negative voltage protection. Recommended values from our engineers.

2. VDHx string resistance problem. TLE9180 recommends 5K, 9183 recommends 1k.

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/m-p/650914

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Hi Lin Gong:

I have another question about the schematic, as follows

1. Please tell me the role of Cl1 plus 100k resistors on the ground

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/m-p/651695

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Hi Lin Gong:

I'm sorry, I just wanted to ask, is there a snubber calculation formula? thankful

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/m-p/651711

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In the case of a sharp drop in Vs, adding a 100k resistor can prevent the device from entering idle mode and losing configuration data. If Vs is stable, it can be added or not.

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/m-p/652161

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No, this part is related to your application, layout, power motor characteristics, etc. There are no relevant formulas or documentation guidelines.

smartconx_target@Q!w2e3r4t5y6u7i8o9p0||/t5/%E7%94%B5%E6%9C%BA%E6%8E%A7%E5%88%B6%E8%8A%AF%E7%89%87/TLE9183-%E5%8E%9F%E7%90%86%E5%9B%BE%E5%AE%A1%E6%A0%B8/m-p/652190

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