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Concrete Copper Speeder Bike
Properties
Properties describe core aspects of the project.
Pricing & Availability
Distributor | Qty 1 |
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anwar5554
anwar5554
copilot
- Output current: up to 3A
- Inductor value: typically 10µH for such setups.
- Output capacitor: typically 22µF or higher low ESR type.
- Input capacitor: typically 22µF or higher.
Schematic Connections:-
Input Capacitor (C1)
- Connect C1:1 (positive terminal) to TPS5430:Vin.
- Connect C1:2 (negative terminal) to GND.
-
Bootstrap Capacitor (C2)
- Connect C2:1 to TPS5430:BOOT pin.
- Connect C2:2 to TPS5430:SW pin.
-
Input Voltage to IC
- Connect Power (7V-15V) to TPS5430:Vin.
- Connect GND to TPS5430:GND.
-
Inductor (L1)
- Connect TPS5430:SW to one end of the L1.
- Connect the other end of L1 to C3:1 and to R1:1 and to the output.
-
Output Capacitor (C3)
- Connect C3:2 to GND.
-
Feedback Divider (Voltage Setting)
- Connect top of resistor R1 to VOUT.
- Connect bottom of resistor R2 to GND.
- Connect middle node of R1 and R2 to TPS5430:VSENSE.
-
Compensation Network (C4 and R3)
- Connect C4:1 and R3:1 to TPS5430:COMP.
- Connect R3:2 to GND.
- Connect C4:2 to the middle node between R3 and TPS5430:COMP.
Recommended Component Values:anwar5554
copilot
-
Input Capacitor (C1)
- Connect C1:1 (positive terminal) to TPS5430:Vin.
- Connect C1:2 (negative terminal) to GND.
-
Bootstrap Capacitor (C2)
- Connect C2:1 to TPS5430:BOOT.
- Connect C2:2 to TPS5430:SW.
-
Input Voltage to IC
- Connect Power (7V-15V) to TPS5430:Vin.
- Connect GND to TPS5430:GND.
-
Inductor (L1)
- Connect TPS5430:SW to one end of the L1.
- Connect the other end of L1 to C3:1 and to R1:1 and to the output.
-
Output Capacitor (C3)
- Connect C3:2 to GND.
-
Catch Diode (D1)
- Connect D1:Anode to GND.
- Connect D1:Cathode to the node between L1 and TPS5430:SW.
-
Feedback Divider (Voltage Setting)
- Connect top of resistor R1 to VOUT.
- Connect bottom of resistor R2 to GND.
- Connect middle node of R1 and R2 to TPS5430:VSENSE.
-
Compensation Network (C4 and R3)
- Connect C4:1 and R3:1 to TPS5430:COMP.
- Connect R3:2 to GND.
- Connect C4:2 to the middle node between R3 and TPS5430:COMP.
Recommended Component Values:anwar5554
copilot
-
Soft-Start Capacitor (C5)
- Adding a soft-start capacitor can help control the startup behavior of the converter.
- Connect C5:1 to TPS5430:SS/TR.
- Connect C5:2 to GND.
- Recommended Value: 0.1µF capacitor (adjustable based on required soft-start time).
-
Additional Input/Output Capacitors
- Depending on your input voltage source and load conditions, additional bulk capacitors might be necessary for stability.
- You could add another 22µF capacitor in parallel with C1.
- Similarly, you could add another output capacitor in parallel with C3 if you're dealing with high transient loads.
-
Thermal Considerations
- Ensure you have proper PCB layout techniques to manage heat dissipation, especially if drawing high currents (close to 3A).
- Consider using a heat sink or adding thermal vias around the TPS5430 and other high-current paths.
-
Frequency Compensation (Optional)
- You might want an additional RC snubber network across the inductor if you find any high-frequency oscillations.
- This step is often based on practical tuning after initial prototyping and testing.
Final Schematic with Additions:-
Input Capacitor (C1)
- Connect C1:1 (positive terminal) to TPS5430:Vin.
- Connect C1:2 (negative terminal) to GND.
-
Bootstrap Capacitor (C2)
- Connect C2:1 to TPS5430:BOOT.
- Connect C2:2 to TPS5430:SW.
-
Input Voltage to IC
- Connect Power (7V-15V) to TPS5430:Vin.
- Connect GND to TPS5430:GND.
-
Inductor (L1)
- Connect TPS5430:SW to one end of the L1.
- Connect the other end of L1 to C3:1 and to R1:1 and to the output.
-
Output Capacitor (C3)
- Connect C3:2 to GND.
-
Catch Diode (D1)
- Connect D1:Anode to GND.
- Connect D1:Cathode to the node between L1 and TPS5430:SW.
-
Feedback Divider (Voltage Setting)
- Connect top of resistor R1 to VOUT.
- Connect bottom of resistor R2 to GND.
- Connect middle node of R1 and R2 to TPS5430:VSENSE.
-
Compensation Network (C4 and R3)
- Connect C4:1 and R3:1 to TPS5430:COMP.
- Connect R3:2 to GND.
- Connect C4:2 to the middle node between R3 and TPS5430:COMP.
-
Soft-Start Capacitor (C5)
- Connect C5:1 to TPS5430:SS/TR.
- Connect C5:2 to GND.
Recommended Component Values:anwar5554
copilot
- C1: 22µF, 25V ceramic capacitor.
- C2: 0.01µF, ceramic capacitor.
- C3: 22µF, 10V ceramic capacitor.
- L1: 10µH inductor.
- R1: 5.62kΩ resistor (for feedback).
- R2: 1.24kΩ resistor (for feedback).
- C4: 0.1µF ceramic capacitor.
- R3: 10kΩ resistor.
- D1: Schottky diode, e.g., 1N5822.
- C5: 0.1µF ceramic capacitor for soft start.
Final Schematic with All Ceramic Capacitors:-
Input Capacitor (C1)
- Connect C1:1 (positive terminal) to TPS5430:Vin.
- Connect C1:2 (negative terminal) to GND.
-
Bootstrap Capacitor (C2)
- Connect C2:1 to TPS5430:BOOT.
- Connect C2:2 to TPS5430:SW.
-
Input Voltage to IC
- Connect Power (7V-15V) to TPS5430:Vin.
- Connect GND to TPS5430:GND.
-
Inductor (L1)
- Connect TPS5430:SW to one end of the L1.
- Connect the other end of L1 to C3:1 and to R1:1 and to the output.
-
Output Capacitor (C3)
- Connect C3:2 to GND.
-
Catch Diode (D1)
- Connect D1:Anode to GND.
- Connect D1:Cathode to the node between L1 and TPS5430:SW.
-
Feedback Divider (Voltage Setting)
- Connect top of resistor R1 to VOUT.
- Connect bottom of resistor R2 to GND.
- Connect middle node of R1 and R2 to TPS5430:VSENSE.
-
Compensation Network (C4 and R3)
- Connect C4:1 and R3:1 to TPS5430:COMP.
- Connect R3:2 to GND.
- Connect C4:2 to the middle node between R3 and TPS5430:COMP.
-
Soft-Start Capacitor (C5)
- Connect C5:1 to TPS5430:SS/TR.
- Connect C5:2 to GND.
Summary of Component Values:anwar5554
copilot
- $V_{in}$ is the input voltage,
- $V_{out}$ is the output voltage,
- $f$ is the switching frequency,
- $L$ is the inductance value (15µH in this case).
Updated Schematic with 15µH Inductor:- C1: 22µF, 25V ceramic capacitor.
- C2: 0.01µF, ceramic capacitor.
- C3: 22µF, 10V ceramic capacitor.
- L1: 15µH inductor.
- R1: 5.62kΩ resistor (for feedback).
- R2: 1.24kΩ resistor (for feedback).
- C4: 0.1µF ceramic capacitor.
- R3: 10kΩ resistor.
- D1: Schottky diode, e.g., 1N5822.
- C5: 0.1µF ceramic capacitor for soft start.
Design Checklist with 15µH Inductor:-
Inductor Ripple Current:
- With a higher inductance of 15µH, the ripple current ($\Delta I_L$) will decrease, which can lead to a more stable and smoother output voltage.
-
Output Capacitors:
- Ensure your output capacitor C3 value is still adequate to handle the lower ripple current. The recommended 22µF ceramic capacitor should typically suffice.
-
Stability Considerations:
- Higher inductance can sometimes affect the stability of the DC-DC converter. The compensation network set by R3 and C4 should be reviewed to ensure it maintains the stability of the regulator.
- Typical compensation values listed (0.1µF and 10kΩ) should work, but it's often beneficial to review them based on a Bode plot for your specific setup.
Final Schematic with 15µH Inductor:anwar5554
copilot
- C1: 22µF, 25V ceramic capacitor.
- C2: 0.01µF, ceramic capacitor.
- C3: 22µF, 10V ceramic capacitor.
- L1: 15µH inductor.
- R1: 5.62kΩ resistor (for feedback).
- R2: 1.24kΩ resistor (for feedback).
- C4: 0.047µF (instead of 0.1µF) ceramic capacitor
- R3: 5.1kΩ (instead of 10kΩ) resistor.
- D1: Schottky diode, e.g., 1N5822.
- C5: 0.1µF ceramic capacitor for soft-start.
Optimized Schematic:anwar5554
copilot
-
Pulling High for Enabled Mode:
- To enable the TPS5430, you should connect the EN pin to a voltage higher than the enable threshold (typically above 1.2V). For convenience, you can connect it to Vin directly.
- Connect TPS5430:EN to TPS5430:Vin.
-
External Control via a Microcontroller or Switch:
- If you want to control the enable pin using an external signal (e.g., from a microcontroller or a manual switch), connect the EN pin to the signal's output pin. Ensure the voltage level of the control signal is within the acceptable range for the enable pin.
Schematic Update with EN Pin Connection:anwar5554
copilot
-
Thermal Relief:
- Use multiple thermal vias to help dissipate heat from high-current paths.
-
Ground Plane Connection:
- Ensure solid ground plane connections for reduced noise and better thermal management.
-
Multiple Layers:
- For very high-current applications, consider using multi-layer PCBs with thicker copper (e.g., 2oz copper).
-
Decoupling Capacitors:
- Place decoupling capacitors close to the TPS5430 input and output pins for better performance stability.
Routing Tips:-
VIN to SW Trace (High Current Path):
- Use a wide trace for the input voltage (VIN) connection to handle high current.
- Connect TPS5430:Vin to C1 positive terminal and then to the power source with the same wide trace.
-
SW to Inductor (L1) Trace:
- Ensure the trace from the switch pin (SW) to the inductor (L1) is wide and short to minimize losses.
-
SW to Catch Diode (D1) Trace:
- The trace from the SW pin to the anode of the catch diode (D1) should also be wide and short.
Example Summary:- Trace Width for 3A Current: 120 mils (3.048 mm) for 1oz copper and 10°C rise.
- Path Length: Keep as short as possible for minimized resistance and impedance.
Conclusion:anwar5554
copilot
- $ k = 0.024 $ for outer layers.
Exact Calculation Using IPC-2221 Formula:- Trace Width for 2A Current: 45 mils (1.14 mm) for 1oz copper and 10°C rise.
Example Summary and Path Length Recommendations:-
VIN to SW Trace (High Current Path):
- Connect TPS5430:Vin to C1 positive terminal and then to the power source with a 45 mils trace.
-
SW to Inductor (L1) Trace:
- Connect TPS5430:SW to L1 with a 45 mils trace.
-
SW to Catch Diode (D1) Trace:
- Connect TPS5430:SW to D1 anode with a 45 mils trace.
-
GND Traces:
- Ensure solid ground connections with the same 45 mils traces.
PCB Layout Tips:-
Keep High Current Paths Short:
- Minimizing the length of the high current paths reduces voltage drop and inductive effects.
-
Use Thermal Vias:
- Add thermal vias near high current components to facilitate heat dissipation.
-
Proper Grounding:
- A solid and low-impedance ground plane helps reduce noise and improve stability.
-
Place Decoupling Capacitors Close:
- Ensure that decoupling capacitors like C1 and C3 are placed close to the TPS5430.
Conclusion:anwar5554
copilot
- C1: 22µF, 25V ceramic capacitor (input).
- C2: 0.01µF ceramic capacitor (bootstrap).
- C3: 22µF, 10V ceramic capacitor (output).
- C4: 0.047µF ceramic capacitor (compensation).
- C5: 0.1µF ceramic capacitor (soft-start).
- L1: 15µH inductor.
- R1: 5.62kΩ resistor (feedback).
- R2: 1.24kΩ resistor (feedback).
- R3: 5.1kΩ resistor (compensation).
- D1: Schottky diode, e.g., 1N5822.
Schematic Connections:-
Input Capacitor (C1)
- Connect C1:1 (positive terminal) to TPS5430DDA:Vin.
- Connect C1:2 (negative terminal) to GND.
-
Bootstrap Capacitor (C2)
- Connect C2:1 to TPS5430DDA:BOOT.
- Connect C2:2 to TPS5430DDA:SW.
-
Input Voltage to IC
- Connect Power (7V-15V) to TPS5430DDA:Vin.
- Connect GND to TPS5430DDA:GND.
-
Enable Pin (EN)
- Connect TPS5430DDA:EN to TPS5430DDA:Vin for always-on operation. Alternatively, connect to a control signal for external enable/disable functionality.
-
Inductor (L1)
- Connect TPS5430DDA:SW to one end of the L1.
- Connect the other end of L1 to C3:1 and to R1:1 and to the output.
-
Output Capacitor (C3)
- Connect C3:2 to GND.
-
Catch Diode (D1)
- Connect D1:Anode to GND.
- Connect D1:Cathode to the node between L1 and TPS5430DDA:SW.
-
Feedback Divider (Voltage Setting)
- Connect top of resistor R1 to VOUT.
- Connect bottom of resistor R2 to GND.
- Connect middle node of R1 and R2 to TPS5430DDA:VSENSE.
-
Compensation Network (C4 and R3)
- Connect C4:1 and R3:1 to TPS5430DDA:COMP.
- Connect R3:2 to GND.
- Connect C4:2 to the middle node between R3 and TPS5430DDA:COMP.
-
Soft-Start Capacitor (C5)
- Connect C5:1 to TPS5430DDA:SS/TR.
- Connect C5:2 to GND.
Trace Width Consideration for 2A Current:- Ensure all high-current paths (like the connection from VIN to SW and SW to L1) are at least 45 mils (1.14 mm) wide on 1oz copper to handle up to 2A safely. Keep these traces as short as possible to minimize losses.
Final Tips: