CHARGE PUMP DC-DC CONVERTER COMPRISING SOLID STATE BATTERIES

• US 20100225278A1
• Filed: 06/01/2007
• Published: 09/09/2010
• Est. Priority Date: 06/07/2006
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Notten, Petrus H. L., Roozeboom, Freddy, Reefman, Derk, Klootwijk, Johan H.
• Granted Patent: US 8,610,404 B2
• Time in Patent Office: Days
• US Class Current: 320/135
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H02M 3/073 Charge pumps of the Schenkel-type
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

An electronic device is provided which comprises a DC-DC converter. The DC-DC converter comprises at least one solid-state rechargeable battery (B1, B2) for storing energy for the DC-DC conversion and an output capacitor (C2).

Claims

1. Electronic device, comprising:

a DC-DC converter having at least one solid-state rechargeable battery for storing energy for the DC-DC conversion and an output capacitor.

2. Electronic device according to claim 1, wherein the at least one solid-state battery is embodied as a thin-film battery, as a thin-film battery in a pore array being etched into a silicon substrate, as a thin-film battery in a trench array being etched into a silicon substrate;

or as a multi-stack planar battery.

3. Electronic device according to claim 1, wherein the solid-state battery comprises a Li-ion battery.

4. Electronic device according to claim 3, wherein the DC-DC converter comprises a first set of switches which are used for charging the at least one solid-state battery according to a first control signal (Pc) and a second set of switches which are used for discharging the at least one battery according to a second control signal (Pd).

5. Electronic device according to claim 1, further comprising an on-off control unit (OOC) for controlling the on and off switching of the DC-DC converter, and a charge watch-dog circuit (CWD) for keeping the at least one battery at a charge level if the DC-DC converter is switched off by the on-off control unit (OOC).

6. Electronic device according to claim 4, wherein the first and second control signal (Pc, Pd) are controlled independently to adjust an output voltage (Vout) of the DC-DC converter.

7. Electronic device according to claim 1, wherein a switching frequency of the DC-DC converter is smaller than 1 Hz.

8. Integrated circuit, comprising:

a DC-DC converter having at least one solid-state rechargeable battery for storing energy for the DC-DC conversion and an output capacitor.

9. A DC-DC converter having at least one solid-state rechargeable battery for storing energy for the DC-DC conversion and an output capacitor.