BQ25606: BQ25606 EMC design

user5019268

Part Number: BQ25606
Other Parts Discussed in Thread: TPS61169,

Dear TI team:

Please help to check my customer design of BQ25606+TPS61169, they care of the EMC design, please give some advice of schematic.

There are two common choke in BQ25606 input and TPS61169 output.

Thanks!

BQ25606&TPS61169.pdf

Regards!

Eric

over 6 years ago

0 Angelo Zhang87 over 6 years ago

TI__Genius 11850 points

Hi Eric,

Why do you have a diode connected from BAT to SYS? The BQ25606 already has an integrated BATFET.

Apart from that, I don't see any obvious errors in your schematic. However, I only checked the BQ25606 portion, so I would recommend creating a new thread to ask for a review of the TPS61169 portion if you would like that to be checked as well.

Best regards,
Angelo

0 user5019268 over 6 years ago in reply to Angelo Zhang87

Prodigy 40 points

Hi Angelo:
The diode just reserved, customer want to test speed of switching power path.
How about the EMC design for BQ25606? Do you have any Suggestions?
Thanks!

0 Angelo Zhang87 over 6 years ago in reply to user5019268

TI__Genius 11850 points

Hi Eric,

Since the BQ25606 is a switching charger, the PCB layout has a significant impact on EMC performance. Please see Section 11 in the datasheet for layout guidelines that will help improve EMC.

Best regards,
Angelo

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BQ25606: BQ25606 EMC design