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what should the values of C1, C2, and C3 be?

tima

@copilot what should the values of C1, C2, and C3 be?

copilot

For a stable and functional buck converter design, the selection of capacitor values is crucial. Given that your application involves a 48V to 5V conversion, the capacitors need to be selected to handle the voltage stress and provide adequate filtering. Here are some typical values you can consider:

Input Capacitor (C1)

Description: This capacitor is used to filter out any input voltage noise and provide a stable input voltage to the regulator.
Recommended Value: Typically between 100µF and 470µF.
Voltage Rating: At least 63V for a 48V input.

Output Capacitor (C2)

Description: This capacitor smooths the output voltage of the buck converter.
Recommended Value: Typically between 100µF and 470µF for 5V output.
Voltage Rating: At least 10V for a 5V output.

Stability Capacitor (C3)

Description: Used to improve the stability and transient response of the converter.
Recommended Value: Typically around 22µF to 100µF.
Voltage Rating: The same as the input capacitor, so around 50V or higher.

Here are the exact connections:

Connect $C1$:P1 to $VIN$:1.
Connect $C1$:P2 to $GND$:1.
Connect $C2$:P1 to $VOUT$:1.
Connect $C2$:P2 to $GND$:1.
Connect $C3$:P1 to $U1$:OUT.
Connect $C3$:P2 to $GND$:1.

Feel free to correct any assumptions if needed!

VOUT

Capacitance

22u F

Capacitance

470u F

Capacitance

470u F

Capacitance

0.1u F

Capacitance

0.1u F

Capacitance

0.1u F

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