Wireless power and wireless communication integrated circuit

• US 9,806,767 B2
• Filed: 06/03/2010
• Issued: 10/31/2017
• Est. Priority Date: 11/30/2009
• Status: Active Grant

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Walley, John, Karaoguz, Jeyhan, Rofougaran, Ahmadreza, Seshadri, Nambirajan, Van Der Lee, Reinier
• Primary Examiner(s): Maung, Nay A
• Assistant Examiner(s): FLEMING-HALL, ERICA L
• Application Number:
  US12/793,524
• Publication Number:
  US 20110130093A1
• Time in Patent Office: 2,707 Days
• Field of Search: 455 411, 307104, 333100, 343850
• CPC Class Codes: G06K 19/0701 at least one of the integrated circuit chips comprising an arrangement for power management
• CPC Class Codes: G06K 19/0715 the arrangement including means to regulate power transfer to the integrated circuit
• CPC Class Codes: G06K 19/0723 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
• CPC Class Codes: G06K 7/10207 parameter settings related to power consumption of the interrogator
• CPC Class Codes: G06K 7/10346 the antenna being of the far field type, e.g. HF types or dipoles
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols

Abstract

An integrated circuit (IC) includes a wireless power receive circuit, a wireless communication module, and a circuit module. The wireless power receive circuit generates a supply voltage from a wireless power electromagnetic signal. The wireless communication module converts inter-chip outbound data into an inter-chip outbound wireless signal; transmits the inter-chip outbound wireless signal to another IC; receives an inter-chip inbound wireless signal from the other IC; and converts the inter-chip inbound wireless signal into inter-chip inbound data. The circuit module is powered by the supply voltage and is operable to generate the inter-chip outbound data; and process the inter-chip inbound data.

Claims

1. An integrated circuit (IC) comprises:

a wireless power receive circuit, which includes a rectifying circuit and a buck-boost converter, configured to;

receive a wireless power electromagnetic signal received from a wireless power transmitter for wireless power transfer; and

generate a supply voltage for charging circuit modules of the integrated circuit, including using the rectifying circuit to generate a rectified voltage based on the wireless power electromagnetic signal and using the buck-boost converter to step down or step up the rectified voltage to generate the supply voltage based on a buck-boost control signal;

a processing module configured to;

monitor charge levels of the circuit modules and the charging of the circuit modules based on the supply voltage;

compare the charging of the circuit modules with a charging requirement;

compare the supply voltage to a reference voltage;

generate, based on comparison of the supply voltage to the reference voltage, the buck-boost control signal to direct operation of the buck-boost converter to step down or step up the rectified voltage to generate the supply voltage;

generate, when the charging of the circuit modules compares unfavorably with the charging requirement indicating cumulative charge power needs of the circuit modules exceeds available power and when the charge levels of the circuit modules compare unfavorably to a desired charge level, a control signal to include first wireless power data relating to a first performance level of the wireless power transfer and the operation of the buck-boost converter for use by the wireless power transmitter to determine at least one adjustment parameter and to adjust the wireless power electromagnetic signal based on the at least one adjustment parameter to modify the wireless power transfer to the wireless power receive circuit, wherein the at least one adjustment parameter is based on one of equal sharing of available power, prioritized sharing of the available power, and power needs of the circuit modules;

generate, when the charging of the circuit modules compares favorably with the charging requirement and when the charge levels of the circuit modules compares unfavorably to the desired charge level, the control signal to include second wireless power data relating to a second performance level of the wireless power transfer and the operation of the buck-boost converter for use by the wireless power transmitter to determine to continue the wireless power transfer to the wireless power receive circuit based on the wireless power electromagnetic signal; and

generate, when the charge levels of the circuit modules compare favorably to the desired charge level, the control signal to include third wireless power data and the operation of the buck-boost converter for use by the wireless power transmitter to determine to adjust the wireless power electromagnetic signal to provide no more than enough wireless power transfer for the wireless power receive circuit to generate another supply voltage for trickle charging the circuit modules; and

a wireless communication module configured to communicate the control signal over a control channel to the wireless power transmitter.

2. The IC of claim 1, wherein the wireless communication module comprises:

a baseband processing module configured to;

convert the inter-chip outbound data into an inter-chip outbound symbol stream; and

convert an inter-chip inbound symbol stream into the inter-chip inbound data;

a receiver section configured to convert the inter-chip inbound wireless signal into the inter-chip inbound symbol stream;

a transmitter section configured to convert the inter-chip outbound symbol stream into the inter-chip outbound wireless signal; and

an antenna section configured to;

receive an inbound millimeter wave (MMW) signal as the inter-chip inbound wireless signal; and

transmit the inter-chip outbound wireless signal as an outbound MMW signal.

3. The IC of claim 1, wherein the wireless communication module comprises:

a baseband processing module configured to;

convert the inter-chip outbound data into an inter-chip outbound symbol stream; and

convert an inter-chip inbound symbol stream into the inter-chip inbound data;

a receiver section configured to convert inter-chip inbound wireless signal into the inter-chip inbound symbol stream;

a transmitter section configured to convert the inter-chip outbound symbol stream into inter-chip outbound wireless signal; and

an coil section operable to;

receive an inbound near field communication (NFC) signal as the inter-chip inbound wireless signal; and

transmit the inter-chip outbound wireless signal as an outbound NFC signal.

4. The IC of claim 3, wherein the coil section comprises:

a coil assembly that generates a wireless power AC voltage based on the wireless power electromagnetic signal, generates an inbound NFC AC voltage from the inbound NFC signal, and generates the outbound NFC signal from an outbound NFC AC voltage;

an NFC inbound driver circuit; and

an NFC outbound amplifier circuit.

5. The IC of claim 1 wherein the first wireless power data relating to the performance level of the wireless power transfer comprises at least one of:

a request to tune at least one component of the wireless power transmitter; and

a request to tune at least one component of the wireless power receive circuit.

6. The IC of claim 1 wherein the first wireless power data relating to the performance level of the wireless power transfer comprises at least one of:

a communication to determine a frequency to use for the wireless power transfer; and

a communication to indicate desired power levels.

7. The IC of claim 1 wherein the processing module is further configured to:

generate a regulation signal to regulate the supply voltage; and

generate at least one of the first, the second, or the third wireless power data relating to the performance level of wireless power transfer from the wireless power transmitter unit to the wireless power receive circuit.

8. The IC of claim 1, wherein the first wireless power data relating to the performance level of the wireless power transfer comprises:

a request to indicate to adjust power levels of the wireless power transmitter.

21. The IC of claim 1, wherein adjustment of the power electromagnetic signal includes at least one of reducing power provided to the circuit modules and reducing charging rate of the circuit modules.

9. An integrated circuit (IC) comprises:

a wireless power receive circuit, which includes a rectifying circuit and a buck-boost converter, configured to;

receive a wireless power electromagnetic signal from a wireless power transmitter for wireless power transfer for charging a battery; and

generate a supply voltage from the wireless power electromagnetic signal for a plurality of circuit modules, including using the rectifying circuit to generate a rectified voltage based on the wireless power electromagnetic signal and using the buck-boost converter to step down or step up the rectified voltage to generate the supply voltage based on a buck-boost control signal;

a wireless transceiver configured to communicate with the wireless power transmitter over a control channel wireless power data relating to a performance level of the wireless power transfer for charging the battery; and

a processing module configured to;

monitor the charging of the battery, the wireless power transfer, and charge level of the battery;

compare the charging of the battery with a charging requirement;

compare the supply voltage to a reference voltage;

generate, based on comparison of the supply voltage to the reference voltage, the buck-boost control signal to direct operation of the buck-boost converter to step down or step up the rectified voltage to generate the supply voltage; and

generate, when total power needs of the plurality of circuit modules exceeds available power from the wireless power receive circuit and when the charging of the battery compares unfavorably to a desired charge level, the wireless power data to include first information including operation of the buck-boost converter for use by the wireless power transmitter to determine at least one adjustment parameter and to adjust the wireless power electromagnetic signal based on the at least one adjustment parameter to modify the wireless power transfer to the wireless power receive circuit;

circuit, wherein the at least one adjustment parameter is based on one of equal sharing of available power, prioritized sharing of the available power, and power needs of the plurality of circuit modules.

10. The IC of claim 9, wherein the processing module is configured to:

determine a voltage level of the supply voltage; and

compare the voltage level to the reference voltage to produce a comparison signal that is used to regulate the supply voltage.

11. The IC of claim 10, wherein the wireless power data relating to the performance level of the wireless power transfer includes:

the comparison signal such that the wireless power transmitter adjusts the wireless power electromagnetic signal based on the comparison signal to regulate the power voltage to a desired voltage level.

12. The IC of claim 9 further comprises:

a power management unit configured to manage at least one of;

the voltage produced by the wireless power receive circuit, power consumption by the IC, or power consumption by the processing module.

13. The IC of claim 9 wherein the wireless power data relating to the performance level of the wireless power transfer comprises at least one of:

a request to tune at least one component of the wireless power transmitter;

or

a request to tune at least one component of the wireless power receive circuit.

14. The IC of claim 9 wherein the wireless power data relating to a the performance level of the wireless power transfer comprises a communication to indicate desired power levels to charge the battery.

22. The IC of claim 9, wherein the processing module is configured to:

generate, when the charging of the battery compares favorably with the charging requirement and when the charge level of the battery compares unfavorably to the desired charge level, the wireless power data to include second information including operation of the buck-boost converter for use by the wireless power transmitter to determine to continue the wireless power transfer to the wireless power receive circuit based on the wireless power electromagnetic signal; and

generate, when the charge level of the battery compares favorably to the desired charge level, the wireless power data to include third information including operation of the buck-boost converter for use by the wireless power transmitter to determine to enter into a power saving mode.

15. An integrated circuit (IC) comprises:

a wireless power receive circuit, which includes a wireless power receive coil section, a rectifying circuit, and a buck-boost converter, configured to;

receive a wireless power electromagnetic signal from a wireless power transmitter for wireless power transfer; and

generate a supply voltage from the wireless power electromagnetic signal for a plurality of circuit modules and a battery recharger, including using the rectifying circuit to generate a rectified voltage based on the wireless power electromagnetic signal and using the buck-boost converter to step down or step up the rectified voltage to generate the supply voltage based on a buck-boost control signal;

a processing module configured to;

convert inter-chip outbound data into an inter-chip outbound symbol stream;

convert an inter-chip inbound symbol stream into inter-chip inbound data;

monitor a performance level of the battery recharger;

compare the performance level of the battery recharger with a performance requirement;

compare the supply voltage to a reference voltage;

generate, based on comparison of the supply voltage to the reference voltage, the buck-boost control signal to direct operation of the buck-boost converter to step down or step up the rectified voltage to generate the supply voltage;

generate, when total power needs of the plurality of circuit modules exceeds available power from the wireless power receive circuit and when the performance level of the battery recharger compares unfavorably with the performance requirement, wireless power data relating to the performance level of the wireless power transfer to include first information including operation of the buck-boost converter for use by the wireless power transmitter to determine at least one adjustment parameter that specifies at least one of a frequency to use for the wireless power transfer, a power level to use for the wireless power transfer, or a request to reposition the wireless power transmitter to improve magnetic coupling to the IC and to adjust the wireless power electromagnetic signal based on the at least one adjustment parameter to modify the wireless power transfer to the wireless power receive circuit, wherein the at least one adjustment parameter is based on one of equal sharing of available power, prioritized sharing of the available power, and power needs of the plurality of circuit modules; and

generate, when the performance level of the battery recharger compares favorably with the performance requirement, the wireless power data relating to the performance level of the wireless power transfer to include second information including operation of the buck-boost converter for use by the wireless power transmitter to determine to continue the wireless power transfer to the wireless power receive circuit based on the wireless power electromagnetic signal; and

a wireless transceiver configured to communicate the wireless power data relating to the performance level of the battery recharger to the wireless power transmitter.

16. The IC of claim 15, further comprising:

a circuit module powered by the supply voltage and configured to;

generate the inter-chip outbound data; and

process the inter-chip inbound data;

a die that supports the circuit module, the processing module, a receiver section, a transmitter section, and at least a portion of the wireless power receive circuit; and

a package substrate that supports the die, wherein at least one of the die or the package substrate supports the coil section; and

wherein the wireless transceiver includes;

the receiver section configured to convert an inter-chip inbound near field communication (NFC) signal into the inter-chip inbound symbol stream;

the transmitter section configured to convert the inter-chip outbound symbol stream into an inter-chip outbound NFC signal; and

a second coil section configured to;

receive the inter-chip inbound NFC signal; and

transmit the inter-chip outbound NFC signal;

wherein the wireless power receive circuit comprises;

the wireless power receive coil configured to generate an AC voltage from the wireless

power electromagnetic signal;

the rectifying circuit configured to generate a the rectified voltage from the AC voltage; and

a capacitance circuit configured to generate the supply voltage from the rectified voltage; and

wherein the processing module is further configured to;

determine a voltage level of the supply voltage; and

compare the voltage level to the reference voltage to produce a comparison signal that is used to regulate the supply voltage, wherein at least one of the die or the package substrate support the wireless power receive coil, the rectifying circuit, and the capacitance circuit.

17. The IC of claim 16, wherein the processing module is further configured to:

output the comparison signal such that the wireless power transmitter adjusts the wireless power electromagnetic signal based on the comparison signal to regulate the power voltage to a desired voltage level.

18. The IC of claim 16, further comprises:

a coil assembly that includes the wireless power receive coil section and the second coil section and is configured to generate a wireless power AC voltage based on the wireless power electromagnetic signal, an inbound NFC AC voltage from the inbound NFC signal, and an outbound NFC signal from an outbound NFC AC voltage;

an NFC inbound driver circuit coupled to the receiver section;

an NFC outbound amplifier circuit coupled to the transmitter section; and

a wireless power inbound amplifier circuit coupled to the wireless power receive circuit.

19. The IC of claim 15 further comprises:

a power management unit configured to manage at least one of;

the voltage produced by the wireless power receive circuit, power consumption by the circuit module, power consumption by the processing module, power consumption by the receiver section, or power consumption by the transmitter section.

20. The IC of claim 15 further comprises:

a plurality of circuit modules; and

the processing module is further configured to;

receive intra-chip outbound data from a first circuit module of the plurality of circuit modules;

convert the intra-chip outbound data into an intra-chip outbound symbol stream;

convert an intra-chip inbound symbol stream into intra-chip inbound data;

output the intra-chip inbound data to the first circuit module;

the receiver section is further configured to convert an intra-chip inbound NFC signal into the intra-chip inbound symbol stream;

the transmitter section is further configured to convert the intra-chip outbound symbol stream into an intra-chip outbound NFC signal; and

the coil section is further configured to;

receive the intra-chip inbound NFC signal from a transmitter section associated with a second circuit module of the plurality of circuit modules; and

transmit the intra-chip outbound NFC signal to a receiver section associated with the second circuit module.

23. The IC of claim 15, wherein the processing module is configured to:

generate, when the performance level of the battery recharger compares favorably with the performance requirement, the wireless power data relating to the performance level of the wireless power transfer to include second information including operation of the buck-boost converter for use by the wireless power transmitter to determine to continue the wireless power transfer to the wireless power receive circuit based on the wireless power electromagnetic signal.