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veronika728632

veronika728632

design simple bms circuit?
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use mermaid formatted block diagrams to generate 2 well detailed architecture de...
collinsemasi

collinsemasi

@copilot use mermaid formatted block diagrams to generate 2 well detailed architecture design of this project for comparison. Make sure to use the technical and functional requirements info
1y

copilot

Creating two architecture design options for your power management board project, including technical and functional requirements, will help in visualizing the different ways the system could be structured. Below are two options using Mermaid diagram syntax:
Architecture Design Option 1: Simple Switching

Image

Battery
Solar Panel
USB
12V Output
5V Output
3.3V Output
Power Inputs
Battery Management IC
Solar Charger
USB Charger
Power Selector
Voltage Regulator node_12V
Voltage Regulator node_5V
Voltage Regulator 3.3V
12V Load
5V Load
3.3V Load
LED Indicators
Power Source Status
Charging Status
Output Status
Tactile Switch
Architecture Design Option 2: Advanced with Microcontroller

Image

Battery
Solar Panel
USB
Control Signals
12V Output
5V Output
3.3V Output
Power Inputs
Battery Management IC
Solar Charger
USB Charger
Microcontroller
Power Selector
Voltage Regulator node_12V
Voltage Regulator node_5V
Voltage Regulator 3.3V
12V Load
5V Load
3.3V Load
LED Indicators
Power Source Status
Charging Status
Output Status
Tactile Switch
Data Interface
Monitoring/Configuration
Summary:
  • Option 1:
    • Uses discrete components for power selection and regulation.
    • Direct paths from chargers to power selector and regulators.
    • Simple and straightforward design.
  • Option 2:
    • Integrates a microcontroller for advanced control (e.g., more precise power selection, data monitoring).
    • Additional interface for monitoring and configuration.
    • Suitable for systems requiring more flexibility and control.
Each design has its own benefits and trade-offs. Option 1 is simpler and might be more cost-effective, while Option 2 provides greater control and monitoring capabilities at the cost of added complexity. Based on your project's specific needs and constraints, one of these options can be selected or further refined.
1y
collinsemasi

collinsemasi

architecture 1 seems simple enough for my application. Create in the same format but with more details 3 different diagrams showing the path from the input to the 3 output for each of the input power options including proposed MPNs if you can.
1y

copilot

Let's create detailed diagrams for the power paths from each input to the outputs (12V, 5V, and 3.3V) for the simple switching architecture. We'll illustrate the paths for Battery, Solar Panel, and USB inputs using proposed Manufacturer Part Numbers (MPNs) where applicable.
Path 1: Battery Input

Image

Protection Diode
Charging/Management
12V Output
5V Output
3.3V Output
Battery Input 3.2V-4.2V
LM74502 Battery Protection IC
BQ24040 Battery Charger IC
Power Selector TPS2115
LM2576 node_12V Regulator
LM1117 node_5V Regulator
LM1117 3.3V Regulator
12V Load
5V Load
3.3V Load
Path 2: Solar Panel Input

Image

Protection/Step-Down
12V Output
5V Output
3.3V Output
Solar Panel Input node_4V-6V
LT3652 Solar Charger IC
Power Selector TPS2115
LM2576 node_12V Regulator
LM1117 node_5V Regulator
LM1117 3.3V Regulator
12V Load
5V Load
3.3V Load
Path 3: USB Input

Image

Protection Diode
12V Output
5V Output
3.3V Output
USB Input node_5V
USB Charging IC MCP73831
Power Selector TPS2115
LM2576 node_12V Regulator
LM1117 node_5V Regulator
LM1117 3.3V Regulator
12V Load
5V Load
3.3V Load
Proposed MPNs:
These components represent a possible selection for creating your battery, solar, and USB input power paths. Adjust component choices based on availability, cost, and specific performance requirements. Let me know if you need further help!
1y
, based on my requirements, help me figure out the best power architecture for t...
collinsemasi

collinsemasi

@copilot, based on my requirements, help me figure out the best power architecture for this project. What should the power tree look like?
1y

copilot

Based on the requirements and specifications of your Brave Power Management Board project, we can outline a general power tree architecture. Here's a step-by-step guide to help you figure it out:
Power Tree Architecture
  1. Input Stage:
    • Inputs:
      • Battery Input: 3.2V - 4.2V
      • Solar Panel Input: 4V - 6V
      • USB Input: 5V
    • Input Selection:
      • Use an automatic input selection circuit that prioritizes the highest available voltage source or, if appropriate, implements priority logic (e.g., USB > Battery > Solar).
  2. Protection Circuitry:
    • Overvoltage Protection: Add TVS diodes or similar components to protect against voltage spikes.
    • Overcurrent Protection: Implement PTC resettable fuses or current-limiting ICs for each input source.
  3. Power Conversion:
    • Buck-Boost Converters:
      • 12V Output: Use a buck-boost converter capable of outputting 12V at 500mA. This converter should be connected to the selected power input.
      • 5V Output: Use a step-down (buck) converter from the 12V output, due to higher efficiency when stepping down from a stable 12V source.
      • 3.3V Output: Again, use a step-down (buck) converter from the 5V output.
  4. Battery Charging:
    • Incorporate a battery management IC that handles charging from both solar and USB inputs.
  5. Output Regulation and Monitoring:
    • LED Indicators: Include LEDs driven by a microcontroller or a discrete control circuit to manage the status (power source, charging, and output status).
    • Output Switches/Buttons: Use MOSFETs or relays controlled by a tactile switch for each output to manage power delivery.
  6. Additional Components:
    • Voltage Regulators: Ensure that each power stage has low-dropout (LDO) regulators if needed for output stability and regulation.
    • Filtering: Use inductors and capacitors for filtering out noise and stabilizing the outputs.
Example Connection
  • From Input Selection to Converter:
    • Connect the output of the input selection circuit to the 12V buck-boost converter.
  • From Converter to Outputs:
    • Connect the 12V buck-boost converter output to the 5V buck converter.
    • Connect the 5V buck converter output to the 3.3V buck converter.
Considerations
  • Select converters and components that comply with your efficiency and environmental standards.
  • Ensure all components are rated for the specified operating temperature range (-20°C to +60°C).
Let me know if you need any further elaboration on any section or suggestions for specific components!
1y
3
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Inspect

IDEATION: BRAVE POWER MANAGEMENT BOARD

IDEATION: BRAVE POWER MANAGEMENT BOARD
Description

Created
Last updated by collinsemasi
1 Contributor(s)
collinsemasi

Controls

Properties

Part Type
Power Management
Objectives
1. Provide versatile 12V, 5V, and 3.3V power outputs. 2. Support multiple power input options: battery, solar panel, and USB port. 3. Integrate efficient solar charging capability. 4. Maintain high power conversion efficiency. 5. Ensure reliability and stability under various conditions. 6. Comply with safety and environmental standards (e.g., RoHS, WEEE). 7. Design a user-friendly interface with LED indicators and control switches. 8. Construct a robust and durable board suitable for challenging environments. 9. Implement comprehensive testing and validation protocols. 10. Deliver high-quality documentation (user manual, technical datasheet)
Power Inputs
1. Battery Input: 3.2V - 4.2V (Li-ion/Li-polymer battery support) 2. Solar Panel Input: 4V - 6V 3. USB Input: 5V
Power Outputs
- 12V Output: 500mA maximum current - 5V Output: 1.5A maximum current - 3.3V Output: 1A maximum current
Charging Capabilities
1. Solar and USB Charging: Capable of charging the battery via solar/USB input. 2. Battery Charging: Integrated charging management for safe and efficient charging.
Environmental Requirements
Operating Temperature Range: -20°C to +60°C Storage Temperature Range: -40°C to +85°C Humidity: 0% to 90% non-condensing
Functional Requirements
- Automatic Input Selection: The board should automatically select the best available power source among battery, solar, and USB inputs. - Overvoltage Protection: Ensure protection against input voltage spikes to prevent damage to the board. - Overcurrent Protection: Include current limiting to protect the circuits from excessive current draw. - LED Indicators: Provide LED indicators for power source status, charging status, and output status. - Switches/Buttons: Include a tactile switch for power on/off control.

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