BQ79616-Q1: Request for schematic design review

Jeffrey Chung1

Part Number: BQ79616-Q1
Other Parts Discussed in Thread: BQ79616

Tool/software:

Hi Team,

Customer is designing BQ79616 with BQ79600. Please review the schematic below and let me know if there are any points to change or not.

BQ79616.pdf

Regards,

over 1 year ago

0 Barry Zhang over 1 year ago

TI__Intellectual 840 points

Hi Jeffrey,

I will get with the team to review the schematic. I will provide an update in the coming days.

Best regards,

Barry

0 Barry Zhang over 1 year ago

TI__Intellectual 840 points

Hi Jeffrey,

LDO Power Tree:
DVDD needs 2.2uF not 1uF
AVDD, CVDD, REFHP, NEG5V, TSREF, BAT, and LDOIN have datasheet capacitor values which is fine.

LDOIN-NPNB LDO circuit
Has good NPNs, and good RNPN/CNPN

GPIOs:
Unused GPIOs should be grounded with a 10kohm resistor instead of being shorted to GND.
GPIO 1 and 2 are fine

Daisy Chain:
The daisy has the recommend BOM with transformers so that is fine.

VCCB Connections:
The BOM looks fine.

Best regards,

Barry Zhang

0 Jeffrey Chung1 over 1 year ago in reply to Barry Zhang

Genius 3300 points

Hi Barry,

Thanks for your design review. Additionally, customer wants to know if inductors of L1/L2 can be used on daisy chain line. There is not used the transformer on EVM schematic part4 below. Please let me know the correct application about this.

Regards,

0 Barry Zhang over 1 year ago in reply to Jeffrey Chung1

TI__Intellectual 840 points

Hi Jeffrey,

A choke can be used instead of a transformer for the daisy chain isolation. Generally speaking, however, we recommend a transformer for better robustness.

Best regards,

Barry

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BQ79616-Q1: Request for schematic design review