LMQ61460EVM: EMI PI filter Design

Brian Wang0928

Part Number: LMQ61460EVM

In the EVM's user guide, there is a pi filter design below. we're wondering to know how to pick the R/C values and design the pi filter to pass the CISPR EMI conditions. It would be good if you could share the calculation process. thanks.

over 2 years ago

0 Jimmy Hua over 2 years ago

TI__Guru 50120 points

Hi,

With the existing LMQ61460EVM PCB layout and EMI filter design, the application should pass CISPR 25 as shown in the EMI results in the datasheet (Figure 10-46 and Figure 10-54).

For specifics on how to select R/C damping values, please refer to the following app note (Section 4.4 damping capacitor).

Regards,

Jimmy

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LMQ61460EVM: EMI PI filter Design