Battery protection circuit with integrated passive components
View Patent ↗An integrated circuit which includes a circuit board having passive elements embedded in its body.
1. An integrated circuit comprising:
a battery assembled with a circuit board having a body, said body including a first surface and a second surface opposing said first surface;
a plurality of first conductive pads on said first surface of said body;
a discharge power semiconductor switch electrically and mechanically connected to one set of said first conductive pads;
a charge power semiconductor switch electrically and mechanically connected to another set of said first conductive pads;
a battery protection integrated circuit disposed on said first surface and operatively connected to said discharge power semiconductor switch and said charge power semiconductor switch;
a plurality of second conductive pads on said second surface of said body for electrical connection to a load;
another plurality of second conductive pads on said second surface of said body for electrical connection to said battery; and
at least one capacitor disposed within said body and including at least one terminal extending through said body and exposed through said second surface of said body; wherein said capacitor includes two spaced plates insulated by a dielectric body from another plate, said another plate including said at least one terminal.
2. The integrated circuit of claim 1 , further comprising a plurality of passives contained within said body.
3. The integrated circuit of claim 2 , wherein at least one of said plurality of passives is a resistor.
4. The integrated circuit of claim 2 , wherein said plurality of passives are comprised of epoxy loaded with particles.
5. The integrated circuit of claim 4 , wherein said particles are comprised of a material with high magnetic permeability.
6. The integrated circuit of claim 4 , wherein said particles are comprised of a semi-conducting material.
7. The integrated circuit of claim 4 , wherein said particles are comprised of an electrically conducting material.
8. The integrated circuit of claim 2 , wherein said plurality of passives are comprised of a fired resistive paste.
9. The integrated circuit of claim 2 , wherein said plurality of passives are comprised of a fired high permeability paste.