CHIP PACKAGE, A CHIP PACKAGE SYSTEM, A METHOD OF MANUFACTURING A CHIP PACKAGE, AND A METHOD OF OPERATING A CHIP PACKAGE

• US 20170356968A1
• Filed: 06/08/2016
• Published: 12/14/2017
• Est. Priority Date: 06/08/2016
• Status: Active Grant

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Schaller, Rainer Markus, Keser, Goran, Harrant, Manuel
• Granted Patent: US 10,180,468 B2
• Time in Patent Office: Days
• CPC Class Codes: G01R 33/07 Hall effect devices
• CPC Class Codes: G01R 33/09 Magnetoresistive devices
• CPC Class Codes: H01L 25/04 the devices not having separate containers
• CPC Class Codes: H10N 50/01 Manufacture or treatment
• CPC Class Codes: H10N 50/10 Magnetoresistive devices
• CPC Class Codes: H10N 50/80 Constructional details
• CPC Class Codes: H10N 52/00 Hall-effect devices integrated devices or assemblies of multiple devices H10N59/00
• CPC Class Codes: H10N 52/80 Constructional details

Abstract

A chip package, a chip package system, a method of manufacturing a chip package, and a method of operating a chip package including: a first sensor configured to measure a magnetic field component up to a maximum magnetic field value; a second sensor configured to measure the magnetic field component beyond the maximum magnetic field value; and a circuit coupled to the first sensor and the second sensor and configured to receive at least one sensor signal from at least one of the first sensor and the second sensor, wherein the circuit is further configured to select the first sensor or the second sensor to measure the magnetic field component based on the received sensor signal.

Claims

1. A chip package comprising:

a first sensor configured to measure a magnetic field component up to a maximum magnetic field value;

a second sensor configured to measure the magnetic field component beyond the maximum magnetic field value; and

a circuit coupled to the first sensor and the second sensor and configured to receive at least one sensor signal from at least one of the first sensor and the second sensor,

wherein the circuit is further configured to select the first sensor or the second sensor to measure the magnetic field component based on the received at least one sensor signal.

2. The chip package of claim 1,

wherein the first sensor and the second sensor have different magnetic sensor technologies.

3. The chip package of claim 2,

wherein the magnetic sensor technologies for the first sensor and the second sensor are selected from the group of magnetic sensor technologies consisting of:

a Hall sensor and a magnetoresistive element.

4. The chip package of claim 1,

wherein the first sensor comprises a tunneling magnetoresistive element and the second sensor comprises an anisotropic magnetoresistive element.

5. The chip package of claim 1,

wherein the first sensor comprises at least two sensor element strips arranged a first distance apart;

wherein the second sensor comprises at least two sensor element strips arranged a second distance apart;

wherein the first distance is greater than the second distance.

6. The chip package of claim 1, further comprising:

a carrier;

a first die attached to the carrier, the first die comprising the first sensor; and

a second die attached to the carrier, the second die comprising the second sensor.

7. The chip package of claim 6,

wherein the first die and the second die are arranged on opposite surfaces of the carrier.

8. The chip package of claim 6,

wherein the first die and the second die are stacked on one another over the carrier.

9. The chip package of claim 6,

wherein the first die and the second die are arranged next to one another over the same side of the carrier.

10. The chip package of claim 6,

wherein the carrier is formed from an electrically conductive material;

and

wherein the chip package further comprises a plurality of contact terminals electrically connected with the carrier.

11. The chip package of claim 10, further comprising:

an electrically insulating adhesive attaching the first die and the second die to the carrier.

12. The chip package of claim 6,

wherein the carrier is non-magnetic.

13. A chip package comprising:

a first sensor configured to provide a first signal representing a magnitude of a magnetic field within a first value range;

a second sensor configured to provide a second signal representing the magnitude of the magnetic field within a second value range;

wherein the second value range at least partially extends beyond a maximum value of the first value range; and

a circuit coupled to the first sensor and the second sensor and configured to receive the first signal and the second signal,

wherein the circuit is further configured to output at least one of the first signal and the second signal when the magnitude of the magnetic field is within the first value range and to output the second signal when the magnitude of the magnetic field is within the second value range.

14. A chip package system comprising:

a substrate comprising an electrically conductive element;

a chip package attached to the substrate, the chip package comprising;

a first sensor arranged a first distance from the electrically conductive element configured to measure a magnetic field component up to a maximum magnetic field value;

a second sensor arranged a second distance from the electrically conductive element configured to measure the magnetic field component beyond the maximum magnetic field value;

wherein the second distance is greater than the first distance; and

a circuit coupled to the first sensor and the second sensor and configured to receive at least one sensor signal from at least one of the first sensor and the second sensor,

wherein the circuit is further configured to select the first sensor or the second sensor to measure the magnetic field component based on the received sensor signal.

15. The chip package system of claim 14,

wherein the first sensor and the second sensor have different magnetic sensor technologies.

16. The chip package system of claim 15,

wherein the magnetic sensor technologies for the first sensor and the second sensor are selected from the group of magnetic sensor technologies consisting of:

a Hall sensor and a magnetoresistive element.

17. The chip package system of claim 14,

wherein the first sensor comprises at least two sensor element strips arranged a first distance apart;

wherein the second sensor comprises at least two sensor element strips arranged a second distance apart;

wherein the first distance is greater than the second distance.

18. The chip package system of claim 14, further comprising:

a carrier;

a first die attached to the carrier, the first die comprising the first sensor; and

a second die attached to the carrier, the second die comprising the second sensor.

19. A method of manufacturing a chip package comprising:

attaching a first sensor to a carrier, wherein the first sensor is configured to measure a magnetic field component up to a maximum magnetic field value;

attaching a second sensor to the carrier, wherein the second sensor is configured to measure the magnetic field component beyond the maximum magnetic field value; and

coupling a circuit to the first sensor and the second sensor and configured to receive at least one sensor signal from at least one of the first sensor and the second sensor, wherein the circuit is further configured to select the first sensor or the second sensor to measure the magnetic field component based on the received sensor signal.

20. A method of operating a first sensor and a second sensor of a chip package, the chip package comprising:

a first sensor configured to measure a magnetic field component up to a maximum magnetic field value and a second sensor configured to measure the magnetic field component beyond the maximum magnetic field value, the method comprising;

receiving at least one sensor signal from at least one of the first sensor and the second sensor; and

selecting the first sensor or the second sensor to measure the magnetic field component based on the received sensor signal.