The project description has been updated to reflect a single-cell power bank design with a 30,000 mAh capacity, a USB-C output of 5V/3A, and the inclusion of a fuel gauge for accurate battery level monitoring.
The BQ25895 datasheet recommends the following decoupling strategy:
High-Frequency Decoupling:
Use one 100nF ceramic capacitor (typically in a 0402 package) placed as close as possible to the VBUS (and/or SYS) pin to filter high-frequency noise. For example, you can use the 100nF 0402 capacitor.
Bulk Decoupling:
In addition, a 10µF capacitor (typically in a 0603 package) is recommended to provide bulk decoupling for stability under load transients. An option is the 10uF 0603 Capacitor.
I will add these decoupling capacitors to your schematic near the appropriate nodes of the BQ25895: one 100nF capacitor for high-frequency bypassing at the VBUS pin and one 10µF capacitor for bulk decoupling at the supply input.
Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
General Purpose Thick Film Standard Power
and High-Power Chip Resistor
47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film
Features:
- RMCF – standard power ratings
- RMCP – high power ratings
- Nickel barrier terminations standard
- Power derating from 100% at 70ºC to zero at +155ºC
- RoHS compliant, REACH compliant, and halogen free
- AEC-Q200 compliant
Welcome to our cutting-edge project featuring a single-cell power bank design optimized for a robust 30,000 mAh capacity. This innovative power bank delivers a powerful USB-C output at 5V/3A, ensuring efficient charging and dependable power for all your devices. Leveraging the advanced capabilities of the Texas Instruments BQ25895 chip, the design offers superior battery charging and integrated power management. Additionally, the inclusion of a precise fuel gauge provides accurate battery level monitoring, making it ideal for users who demand reliability and performance. Experience the future of portable power with this state-of-the-art, high-capacity solution.