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    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
  • CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
  • 1070TR
    Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
FB
GND
SW
EN
VIN

XL6009

XL6009
Created
June 16th 2023
Last updated by boudjemapcb
4 months ago
5 Contributor(s)
chappy1369
vaish619
himansi
pulsosaudio00
boudjemapcb

Controls

Properties

Availability & Pricing

DistributorQty 1

Assets

    Footprint
  • DPAK170P1435X465-6N.kicad_mod

    id=DPAK170P1435X465-6N

  • 3d Model
  • XL6009.step

    id=XL6009

  • DefaultThumbnail
  • thumbnail
    XL6009

    id=default

Simulation

µs

Simulation Speed

Hey, I'm copilot! I can help you with all kinds of stuff in your project. Reac...
Hey, I'm copilot! I can help you with all kinds of stuff in your project. Reach me at any time by tagging me on comments or in the chat with my handle, @copilot.
1y
@copilot i wan tot design a circut ehich shoud have buckboost functionality and cc cv battery charging
2mo
To design a circuit that provides buck-boost functionality along with constant current (CC) and constant voltage (CV) battery charging, you will need:

  1. A buck-boost converter IC.
  2. Additional components to support the voltage regulation and charging requirements.
The XL6009 is a good candidate for a buck-boost converter. It can handle a wide range of input voltages and provides a stable output voltage.
Key Components for the Circuit

  1. Buck-Boost Converter: XL6009 for buck-boost functionality.
  2. Inductor: Required for the buck-boost operation.
  3. Capacitors (Input/Output): For smoothing and stability.
  4. Schottky Diode: For rectification.
  5. Resistors: For setting feedback voltage and current sense.
  6. Current Sense Resistor: For controlling the charging current (CC).
  7. Voltage Divider: For controlling the output voltage (CV).
  8. Enable Control: To turn the converter on/off.
Basic Connections

  1. Connect VIN:

    • Connect the input voltage source to VIN.
  2. Connect SW:

    • Connect SW to the inductor and output diode.
  3. Connect GND:

    • Tie GND to the common ground.
  4. Connect EN:

    • Add a control switch or jumper to EN to enable or disable the converter.
  5. Connect FB:

    • Connect FB to a voltage divider and current sense circuit to set the desired output voltage and current.
Assumptions

  • Assume using standard values for inductors, capacitors, and diodes as per the XL6009 datasheet recommendations.
  • Assume the battery charging voltage and current are known and can guide the resistor values.
If you have specific values for the input/output voltage and current, feel free to share, and we can refine this setup further.
2mo
i want to add constant current and constant voltage faction
2mo
To implement both constant current (CC) and constant voltage (CV) charging functionalities using the XL6009 buck-boost converter, you'll need to add a control circuit that switches between maintaining a constant current during the bulk charging phase and a constant voltage during the final charge phase.
Suggested Circuit Components

  1. Buck-Boost Converter: XL6009
  2. Inductor LL
  3. Input/Output Capacitors CinC_{in}, CoutC_{out}
  4. Schottky Diode DD
  5. Voltage Divider Resistors R1R_1, R2R_2
  6. Current Sense Resistor RsenseR_{sense}
  7. Op-Amp Comparator for CC/CV Switching
Basic Circuit Configuration

  • Voltage Regulation (CV)

    • Use a voltage divider (with resistors R1R_1 and R2R_2) connected to the FB pin to set the desired output voltage.
    • Connect VIN to FB through this voltage divider.
  • Current Regulation (CC)

    • Place a current sense resistor RsenseR_{sense} in series with the output and the battery to measure charging current.
    • Use an op-amp to compare the voltage across RsenseR_{sense} to a reference voltage, which sets the maximum current.
    • Include a feedback loop to control switching between CC and CV based on the comparison.
  • Switching Logic for CC/CV

    • Use a comparator circuit built with an op-amp to handle the transition between CC and CV.
    • Make use of a microcontroller or additional logic to monitor battery voltage and current, helping to switch modes appropriately.
Example Connections

  • Connect SW to Inductor LL and Schottky Diode DD.
  • Connect GND to all ground points.
  • Connect EN to a logic high to enable XL6009.
Further Design Details

  • Feedback Loop: Design a feedback loop with necessary switching circuits, typically consisting of transistors and diodes to ensure smooth transitions between CC and CV stages.
  • Refinement: Specific values for resistors, capacitors, and reference voltage in the op-amp comparator should be based on precise battery voltage and current specifications.
Feel free to adjust and specify particular current and voltage values for more detailed guidance on component selection.
2mo
@copilot i want to add constant current and constant voltage function
2mo
To add constant current (CC) and constant voltage (CV) functionality to your buck-boost converter circuit using the XL6009, you'll need to configure the feedback and output stage to ensure that you can control both the voltage and current.
Steps to Implement CC and CV Charging

  1. Feedback Network for CV:

    • Use a voltage divider connected to the FB pin to set the desired output voltage. This divider provides feedback to the chip so it can adjust the output to maintain the set voltage.
  2. Current Sensing for CC:

    • Place a current sense resistor (Rsense) in series with the load or battery being charged.
    • Feed the voltage across this resistor to an amplifier or directly to the ADC of a microcontroller for current measurement.
  3. Control Loop:

    • Use an op-amp or a controller to handle transitions between CC and CV modes.
    • When the output current exceeds a set limit, the circuit should reduce the voltage to maintain constant current.
    • As the current drops below the limit (e.g., when the battery is nearly full), revert to constant voltage regulation.
Connecting Key Components

  1. Voltage Divider for CV:

    • Connect FB to a resistor network to set your desired output voltage.
  2. Current Sense Resistor for CC:

    • Connect a sense resistor in series with the load or battery.
    • Configure an op-amp circuit to sense the voltage across the sense resistor and provide feedback for current regulation.
  3. Microcontroller Option: (optional)

    • If you choose to use a microcontroller, configure ADCs to monitor voltage and current.
    • Implement a software feedback loop to switch between CC and CV modes.
Example Schematic Setup

  • Voltage Divider: Select resistors R1 and R2 to set the output voltage using the formula: Vout=Vref(1+R1R2)V_{\text{out}} = V_{\text{ref}}\left(1 + \frac{R1}{R2}\right) (Here, $V_{\text{ref}}$ is the internal reference voltage of the XL6009).
  • Current Sense Resistor: Choose Rsense based on the desired maximum current using Ohm’s law: Vsense=Iout×RsenseV_{\text{sense}} = I_{\text{out}} \times R_{\text{sense}}
Make sure to verify component values with simulation or recalculation based on your specific voltage and current requirements. Would you like more detailed assistance on any of these steps?
2mo
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