Tip / Sign in to post questions, reply, level up, and achieve exciting badges. Know more

Motor Control ICs Forum Discussions

kumarluc
Level 1
Level 1
First question asked Welcome!

HI, Help me to get answer of below questions

1. We are not using the shunt resistor to sensce the phase current.
2. We are using current transducer (Current transformer) to sense the phase current. Is it possible to get the sensor signal to uC if we connect two current transducer as below - 

Sensor 1 O/P >=> ISPx

Sensor 2 O/P >=> ISNx

kumarluc_0-1670302284345.png

1. AGND , GND CP_GND are isolated or not ? - Please confirm

kumarluc_1-1670302371507.png

 

0 Likes
1 Solution
RupakC
Moderator
Moderator
Moderator
First like given 50 solutions authored 100 replies posted

Hello @kumarluc 

1. Two current transducers may be used to sense the voltages. You may apply the signals across ISPx and ISNx pins. Whatever you have suggested is not correct. ISPx is the input shunt positive for CSAx. ISNx is the input shunt negative for CSAx. Each signal has to be connected between the positive and negative pins of the same CSA. For more details, please read through the datasheet. 

The device has 2 CSA blocks. Please note that you can sense maximum of 2 analog signals. However, proper signal conditioning circuits need to be designed such that the analog input to the TLE9180 device satisfies the voltage ratings prescribed in the datasheet.

2. As is clearly mentioned in the datasheet, the analog ground and the charge pump ground are not isolated. They are connected together. 

Regards

RupakC

View solution in original post

0 Likes
1 Reply
RupakC
Moderator
Moderator
Moderator
First like given 50 solutions authored 100 replies posted

Hello @kumarluc 

1. Two current transducers may be used to sense the voltages. You may apply the signals across ISPx and ISNx pins. Whatever you have suggested is not correct. ISPx is the input shunt positive for CSAx. ISNx is the input shunt negative for CSAx. Each signal has to be connected between the positive and negative pins of the same CSA. For more details, please read through the datasheet. 

The device has 2 CSA blocks. Please note that you can sense maximum of 2 analog signals. However, proper signal conditioning circuits need to be designed such that the analog input to the TLE9180 device satisfies the voltage ratings prescribed in the datasheet.

2. As is clearly mentioned in the datasheet, the analog ground and the charge pump ground are not isolated. They are connected together. 

Regards

RupakC
0 Likes