Conductive shielding device
View Patent ↗Devices and methods for reducing stray magnetic fields from an inductor are disclosed. In some aspects, a device includes a substantially U-shaped component configured to attach to a conductive surface of a printed circuit board and configured to substantially surround a lengthwise portion of an inductor on three sides of the inductor.
1. A method comprising:
attaching an inductor to a printed circuit board having a conductive pad, the inductor comprising a core component; and
attaching a U-shaped conductive shielding component to the conductive pad on the printed circuit board such that:
the conductive pad and the U-shaped conductive shielding component substantially surround a lengthwise portion of the inductor; and
the U-shaped conductive shielding component at least partially covers the inductor and the core component.
2. The method of claim 1 , wherein attaching the inductor to the conductive pad on the printed circuit board comprises attaching the inductor such that a gap of the inductor is located on a portion of the inductor located adjacent to the printed circuit board.
3. The method of claim 1 , wherein the U-shaped conductive shielding component comprises:
a first side substantially perpendicular to the printed circuit board;
a second side substantially perpendicular to the printed circuit board and substantially parallel to the first side; and
a third side connected to the first and second sides and substantially parallel to the printed circuit board.
4. The method of claim 1 , further comprising forming the U-shaped conductive shielding component using a metal stamping process.
5. The method of claim 1 , wherein attaching the U-shaped conductive shielding component to the conductive pad on the printed circuit board comprises soldering the U-shaped conductive shielding component to the conductive pad on the printed circuit board.
6. A system for reducing stray magnetic fields from an inductor, the system comprising:
a printed circuit board having a conductive pad;
a core component of the inductor, with the core component configured to attach to the conductive pad; and
a conductive shielding device configured to at least partially cover the core component when attached to the conductive pad, the conductive shielding device comprising:
a first side;
a second side substantially parallel to the first side; and
a third side attached between the first and the second sides, the third side being substantially perpendicular to the first and the second sides.
7. The system of claim 6 , wherein:
the first side of the conductive shielding device is substantially perpendicular to a surface of the printed circuit board;
the second side of the conductive shielding device is substantially perpendicular to the surface of the printed circuit board; and
the third side of the conductive shielding device is substantially parallel to the surface of the printed circuit board.
8. The system of claim 6 , wherein the conductive pad is on a surface of the printed circuit board.
9. The system of claim 6 , wherein the conductive shielding device further comprises:
a first attachment portion extending at an angle from the first side; and
a second attachment portion extending at an angle from the second side.
10. The system of claim 9 , wherein the first attachment portion and the second attachment portion are configured for electrical communication with the conductive pad.
11. The system of claim 6 , wherein the conductive shielding device comprises a stamped metal component.
12. The system of claim 6 , wherein the conductive shielding device comprises copper.
13. The system of claim 6 , wherein the conductive shielding device comprises tin.
14. The system of claim 6 , wherein the core component attaches the inductor to the printed circuit board.
15. The system of claim 6 , wherein the conductive pad, the first side of the conductive shielding device, the second side of the conductive shielding device, and the third side of the conductive shielding device substantially surround a lengthwise portion of the inductor.
16. A device for reducing stray magnetic fields from an inductor, the device comprising:
a substantially U-shaped stamped metal component configured to (i) attach to a conductive surface of a printed circuit board, (ii) substantially surround a lengthwise portion of the inductor on three sides of the inductor, and (iii) at least partially cover a core component of the inductor when the core component is attached to the conductive surface of the printed circuit board.