Integrated passive component
View Patent ↗An integrated passive component having a semiconductor body, arranged on a metal substrate and having a first surface, and a plurality of metal surfaces formed on the surface, a passivation layer formed on the surface, an integrated circuit formed near the surface of the semiconductor body, whereby the integrated circuit is connected to metal surfaces via traces formed below the passivation layer, a part of the metal surfaces is connected to pins via bonding wires, and a first coil formed above the passivation layer, whereby the first coil with a plurality of turns has a longitudinal axis formed substantially parallel to the surface of the semiconductor body, and in a lower part of the first coil, said part which is formed substantially parallel to the longitudinal axis of the coil on the surface of the semiconductor body, parts of a plurality of turns are formed as sections of traces.
1. An integrated passive component comprising:
a semiconductor body arranged on a metal substrate, said semiconductor body having a first surface and a second surface, with a plurality of metal surfaces formed on the first surface and having an entire extent of said second surface contacting said metal substrate;
a passivation layer formed on the first surface;
an integrated circuit formed in the semiconductor body near the first surface of the semiconductor body, the integrated circuit being connectable to the metal surfaces via traces formed in the semiconductor body below the passivation layer, a portion of the metal surfaces being connectable to pins via bonding wires; and
a first coil having a lower part and an upper part and having a plurality of turns, said first coil further having a longitudinal axis formed substantially parallel to the first surface of the semiconductor body,
wherein, in said lower part of the first coil, parts of said plurality of turns are formed as sections of the traces formed in the semiconductor body below said passivation layer and at least one turn of the first coil is formed from a wire in said upper part above the passivation layer.
2. The integrated passive component according to claim 1 , wherein the wire is connected via a bond to a metal surface and to a trace.
3. The integrated passive component according to claim 1 , wherein the coil is connected to the integrated circuit.
4. The integrated passive component according to claim 1 , wherein a magnetic field sensor is formed below the lower part of the coil in the surface of the semiconductor body.
5. The integrated passive component according to claim 1 , wherein the magnetic field sensor is arranged between two turns formed as traces.
6. The integrated passive component according to claim 1 , wherein a magnetic field sensor is arranged between two traces of the coil winding.
7. The integrated passive component according to claim 5 , wherein the magnetic field sensor is formed as a Hall sensor.
8. The integrated passive component according to claim 1 , wherein the semiconductor body and the first coil are arranged in a single housing.
9. The integrated passive component according to claim 1 , wherein a second coil is provided within the first coil.
10. The integrated passive component according to claim 9 , wherein sections of turns of the second coil that are formed as traces, are formed in a trace layer above the trace layer of the sections for the turns of the first coil.
11. The integrated passive component according to claim 8 , wherein the housing is formed of plastic.
12. The integrated passive component according to claim 1 , wherein the integrated passive component is for magnetic field-free position measuring.
13. The integrated passive component according to claim 1 , wherein the integrated passive component is for measuring magnetic fields.
14. The integrated passive component according to claim 1 , wherein the integrated passive component is for calibrating and testing magnetic field sensors.
15. The integrated passive component according to claim 1 , wherein the integrated passive component is for transmitting data to a magnetic field sensor.