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Emanuel M
Emanuel M
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PROBLEM: Considering the figure below, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller, which system have this characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

1- What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)

2- For the capacitance, the higher the better?

3- For the number of capacitors, the more the better?

4- How to calculate a proper C for the capacitors?

enter image description here

LAYOUT INTENTIONS:

The bulk caps will be placed as shown below, in order to get the minimum current loop:

Top Layer:

enter image description here

3D View from Top Layer:

enter image description here

PROBLEM: Considering the figure below, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller, which system have this characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

1- What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)

2- For the capacitance, the higher the better?

3- For the number of capacitors, the more the better?

4- How to calculate a proper C for the capacitors?

enter image description here

PROBLEM: Considering the figure below, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller, which system have this characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

1- What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)

2- For the capacitance, the higher the better?

3- For the number of capacitors, the more the better?

4- How to calculate a proper C for the capacitors?

enter image description here

LAYOUT INTENTIONS:

The bulk caps will be placed as shown below, in order to get the minimum current loop:

Top Layer:

enter image description here

3D View from Top Layer:

enter image description here

deleted 1 character in body
Source Link
Emanuel M
Emanuel M
  • 188
  • 1
  • 9

PROBLEM:

  Considering the figure below, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller. The, which system has thesehave this characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

  1. What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)
  2. For the capacitance, the higher the better?
  3. For the number of capacitors, the more the better?
  4. How to calculate a proper C for the capacitors?

enter image description here 1- What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)

LAYOUT APPLICATION 2- For the capacitance, the higher the better?

I plan to place those bulk3- For the number of capacitors as shown below., the more the better?

The holes are vias to GND and the other side is the VM rail4- How to calculate a proper C for the MOSFETS's drains:capacitors?

enter image description hereenter image description here

PROBLEM:

  Considering the figure below, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller. The system has these characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

  1. What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)
  2. For the capacitance, the higher the better?
  3. For the number of capacitors, the more the better?
  4. How to calculate a proper C for the capacitors?

enter image description here

LAYOUT APPLICATION

I plan to place those bulk capacitors as shown below.

The holes are vias to GND and the other side is the VM rail to the MOSFETS's drains:

enter image description here

PROBLEM: Considering the figure below, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller, which system have this characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

1- What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)

2- For the capacitance, the higher the better?

3- For the number of capacitors, the more the better?

4- How to calculate a proper C for the capacitors?

enter image description here

deleted 4 characters in body; edited title
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JRE
JRE
  • 73.5k
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How to select appropriate capacitor for an H-bridge

PROBLEM: 

Considering the figure bellowbelow, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller, which. The system have thishas these characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

1- What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)

2- For the capacitance, the higher the better?

3- For the number of capacitors, the more the better?

4- How to calculate a proper C for the capacitors?

  1. What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)
  2. For the capacitance, the higher the better?
  3. For the number of capacitors, the more the better?
  4. How to calculate a proper C for the capacitors?

enter image description here

LAYOUT APPLICATION I

I plan to place those bulk capacitors as showed bellow:shown below.

The holes are vias to GND and the other side is the VM rail to the MOSFETS's drains. :

enter image description here

How to select appropriate capacitor for H-bridge

PROBLEM: Considering the figure bellow, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller, which system have this characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

1- What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)

2- For the capacitance, the higher the better?

3- For the number of capacitors, the more the better?

4- How to calculate a proper C for the capacitors?

enter image description here

LAYOUT APPLICATION I plan to place those bulk capacitors as showed bellow: The holes are vias to GND and the other side is the VM rail to the MOSFETS's drains. enter image description here

How to select appropriate capacitor for an H-bridge

PROBLEM: 

Considering the figure below, I need to select an appropriate bank of capacitors for a 3 half-bridge brushless controller. The system has these characteristics:

  • VM = 60v (maximum);
  • Max Current = 100A;
  • PWM frequency: 100khz;
  • Rds(on) typical is 1.15mOhm;
  • Rshunt = 1.0mOhm.

QUESTIONS:

  1. What SMD package is recommended to use for these capacitors? (I'm considering to use 1206 or 1210)
  2. For the capacitance, the higher the better?
  3. For the number of capacitors, the more the better?
  4. How to calculate a proper C for the capacitors?

enter image description here

LAYOUT APPLICATION

I plan to place those bulk capacitors as shown below.

The holes are vias to GND and the other side is the VM rail to the MOSFETS's drains:

enter image description here

added 248 characters in body
Source Link
Emanuel M
Emanuel M
  • 188
  • 1
  • 9
Source Link
Emanuel M
Emanuel M
  • 188
  • 1
  • 9