Power net portal is a special schematic object used to define a power or ground net. Power ports allow you to conveniently indicate a power net at any location in the design. Power nets of the same designator automatically connect throughout your design #portal #power
A generic fixed inductor for rapid developing circuit topology. *You can now change the footprint and 3D model at the top level anytime you want. This is the power of #generics
I see that L1 is an inductor in your design with an inductance of 2.2uH and packaged in SMD_1206_3216Metric. I'm not able to recommend a specific make and part number, but a good replacement would need to match or exceed these key parameters:
Inductance: 2.2 µH
Package/Case: SMD_1206_3216Metric
Type: Surface Mount
It will also be important to consider other parameters to make sure it fits in with your circuit's requirements, such as:
Current rating: You need to make sure it can handle the electrical current in your circuit.
Resistance (DCR): Lower values will generally result in better efficiency.
Frequency range: It should work within your circuit's operating frequency.
Please note that different manufacturers might have a different naming convention for this package size, some might name it as SMD_1206, others as Metric_3216.
I would recommend checking major electronic component suppliers like Digikey, Mouser or RS Components to check for inductors that match these dimensions and parameters.
The inductor L1 is part of your circuit with an inductance of 2.2 µH. Swapping it with a 1 µH or 4.5 µH inductor will change the inductance value, and therefore the operation of your circuit.
If L1 is a part of a power supply circuit, filter circuit, or an oscillator, its value is critical for the performance and stability of these designs. For filters, the inductor value along with the capacitor values determine the cutoff frequencies. In the case of power supplies like Buck or Boost converters, the value of the inductor can affect the ripple current, efficiency, and stability.
Therefore, using a 1 µH or 4.5 µH inductor instead of 2.2 µH could significantly change your circuit's characteristics. You should perform a circuit analysis or simulation first to understand the effect of these changes.
I would recommend sticking with the 2.2µH inductor value unless your revised analysis shows that a different inductor value is acceptable for your circuit performance and stability. If you need to use a 1 µH or 4.5 µH inductor due to availability, make sure to verify its suitability in your particular design.
11mo
9
Would this connection worck where the resistor is after the led not before
Yes, placing the resistor after the LED instead of before it can work in a circuit. The purpose of the resistor in an LED circuit, regardless of being placed before or after the LED, is to limit the current through the LED to prevent it from burning out due to excessive current. The direction of current flow through the LED and the resistor doesn't change the fact that the resistor limits the current.
Here's a typical LED circuit connection for context, assuming we're dealing with designators from your project:
If we're considering the LED designated as IO1-LED1 and a resistor, say R1 (assuming R1 is the resistor in question), whether R1 is connected to the Anode (A) or Cathode (K) side of IO1-LED1 does not change the fundamental operation of limiting current to the LED. The important part is that they are in series.
For IO1-LED1 where:
IO1-LED1:A goes to the +V (could be 3V3 for a 3.3V LED circuit).
IO1-LED1:K connects to R1:P1 or R1:P2 (Whichever pin to accommodate the series connection logic).
Then for resistor placement after the LED:
Connect IO1-LED1:K to R1:P1 (assuming P1 is the input side of the resistor).
Connect R1:P2 to GND.
This assumes:
The supply voltage (3V3) is appropriate for your LED and resistor combination. The resistor value should be chosen based on the LED's forward voltage and desired forward current.
3V3 represents a +3.3V power net in your project, which is typical for logic circuits but should be confirmed as suitable for your LED.
Adjust the resistor value as necessary to limit the current according to the LED's specifications. The LED's forward voltage ((V_f)) and desired current ((I_f)) help in calculating the resistor value using Ohm's law ((R = \frac{V_{supply} - V_f}{I_f})). Always double-check the LED and resistor specifications to ensure proper operation and safety.
In IC1, which is an TPS62160DSGR, the output pin is designated as SW (switch node) and corresponds to pin 7. This pin is typically connected to the inductor in the circuit to facilitate the step-down (buck) conversion process.
team9
copilot