BQ51003: Wireless charging circuit - Circuit design questions

Hi Jorge

See below check list for schematic review.   TS_CNRL (F1) needs to be 10k resistor.

Also for layout use TIDA-00318 and TIDA-00669.

Things to check on your design:

1. Pin out of symbol, make sure it matches device

2. AD pin ground – if adapter option not used

3. COMM, BOOT, CLAMP and AC – Recommend reusing values from EVM / Application section 

4. PGND connection -- verify good connection to ground

5. ILIM pin connection to ground thru FOD resistor -- verify current limit set point

6. FOD pin connection, 196 ohms good value to start, tune during fod cal

7. EN1 / EN2 Pin ground -- recommend adding 0 ohm to give you options

8. CHG pin LED, Open drain output 

9. TS / CTRL Pin connect to gnd with 10k, safe condition good

10. RECT pin (AC1/AC2 full wave rectified signal), Cap bank to filter signal --- max voltage could be 15V to 20V.  Note R20 value set during fod cal, 20k OK to start.

11. OUT pin needs 1uF (effective capacitance) near the pin.  C7 - 2.2uF looks OK.

Hello Bill,

Thank you for the answer. Attached below how it looks like:

Thank you for the support!

Jorge