Starting New Project

Start a new project

Thought for 1 min 37 sec

flux

Here’s what the Flux documentation says about creating a new blank project:

“Start a project with an empty canvas.

As its name indicates, the ‘New blank project’ option creates a new, empty project (or part):

To create a new blank project:

Locate the Flux menu at the top left and click on ‘New project’.
Select the account you want to create a new blank project into
Click on the ‘NEW BLANK PROJECT’ button in the bottom-right corner of the new project menu.”

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explain this project

tteague

@copilot explain this project

copilot

Sure! Let’s break down what this project is about and what its components are for.

Project Overview

This project is named BQ2550 Sub-l and focuses on energy harvesting using the Texas Instruments BQ25504 integrated circuit (IC). Energy harvesting circuits like this one typically gather small amounts of power from environmental sources such as solar panels, vibration, or thermal differences.

The BQ25504 is a highly efficient IC designed to manage these energy sources, store the harvested energy into a battery or capacitor, and provide power to a low-powered electronic system.

Project Components and Connections

Here’s a brief rundown of the main components and their functionalities, as well as any notable connections:

Primary IC: BQ25504 (Designator: IC1)

Pins and Functions:
- VSS (1, 13): Ground pins
- VIN_DC (2): Input voltage from a DC power source
- VOC_SAMP (3): Sampled open-circuit voltage from an energy-harvesting source
- VREF_SAMP (4): Reference voltage for internal operations
- OT_PROG (5): Over-temperature programming
- VBAT_OV (6): Battery over-voltage threshold setting
- VRDIV (7): Resistor divider used for VOC_SAMP
- VBAT_UV (8): Battery under-voltage threshold setting
- OK_HYST (9): Sets hysteresis on OK_PROG output
- OK_PROG (10): Programmable threshold indicator
- VBAT_OK (11): Indicates if the battery voltage is within acceptable range
- AVSS (12): Analog ground
- VBAT (14): Battery connection
- VSTOR (15): Energy storage output
- LBST (16): Boost inductor connection
- PAD (17): Thermal pad should be connected to ground

Resistors

Various resistors (R1, R2, R3, etc.) with specified resistance values are used for setting different voltage thresholds and providing feedback.
- Examples:
  - R5: 5.90MΩ, forming part of the resistor divider network.
  - R4: 4.42MΩ, likely involved in voltage sensing.

Capacitors

Capacitors (C1, C2, C3, C4) serve to filter and stabilize voltages, smoothing out the power supply to avoid noise and fluctuations.
- Examples:
  - C1 and C3: 4.7µF, probably used for decoupling and energy storage.
  - C4: 0.01µF, possibly used for finer filtering tasks.

Inductor

L1: 22µH, used as a part of the boost converter circuit to step up the voltage as required for the storage element or load.

Nets

VBAT_OV, VBAT_UV, VBAT_OK, VIN_DC, OK_PROG, OK_HYST: These nets represent various nodes in the circuit, connecting resistors, capacitors, and other elements to the relevant pins on the IC.

Assumptions and Additional Remarks

The circuit seems to be designed for energy harvesting using a solar panel, as inferred from the designator SOLAR+ and VIN_DC connections.
The resistors and capacitors associated with VBAT_OV, VBAT_UV, and VBAT_OK indicate settings for over and under voltage protection of the battery.

Next Steps

If you have any specific questions or need help with particular aspects of this design, feel free to ask! Whether it's connections, component values, or understanding specific net behaviors, I'm here to help.

IC1

CBYP

BQ2550 Sub-l