# US 12,184,110 B2 · Power supply architecture with bidirectional battery idealization

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- Number: US 12,184,110 B2
- Document ID: US12184110B2
- Status: Granted
- Kind: B2
- Application number: 18/503,830
- Filed: 2023-11-07
- Published: 2024-02-29
- Granted: 2024-12-31
- Earliest claimed: 2020-08-14
- Assignees: Cirrus Logic, Inc.
- Applicants: Cirrus Logic International Semiconductor Ltd.
- Inventors: Ivan Perry; Hasnain Akram; Eric J. King
- Web page: https://patentgrep.com/patent/US12184110B2

## CPC

- H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)}
- G06F 1/263: {Arrangements for using multiple switchable power supplies, e.g. battery and AC (G06F1/30 takes precedence)}
- H02J 7/342: {The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging (with circuits for polarity protection H02J7/68)}
- H02J 7/855: {with circuits adapted for supplying loads from the battery}
- H02J 2105/44: Portable electronic devices
- H02J 2207/20: Charging or discharging characterised by the power electronics converter
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A power management system for use in a device comprising a battery and one or more components configured to draw electrical energy from the battery may include a first power converter configured to electrically couple between charging circuitry configured to provide electrical energy for charging the battery and the one or more downstream components and a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, wherein the bidirectional power converter is configured to transfer charge from the battery or transfer charge from the battery based on a power requirement of the one or more components and a power available from the first power converter.

## Claims

### Claim 1

A power management system for use in a device comprising a battery and one or more components configured to draw electrical energy from the battery, the power management system comprising:
a first power converter configured to electrically couple between charging circuitry configured to provide electrical energy for charging the battery and the one or more components; and
a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, wherein the bidirectional power converter is configured to transfer charge from the battery or transfer charge to the battery based on a power requirement of the one or more components and a power available from the first power converter.

### Claim 2 (depends on 1)

The power management system of claim 1, wherein the bidirectional power converter is configured to:
operate in a first mode to transfer charge to the battery when the power requirement is lesser than the power available from the first power converter; and
operate in a second mode to transfer charge from the battery when the power requirement is greater than the power available from the first power converter.

### Claim 3 (depends on 2)

The power management system of claim 2, wherein the bidirectional power converter is configured to:
operate as a buck converter in the first mode; and
operate as a boost converter in the second mode.

### Claim 4

A method comprising, in a device comprising a battery and one or more components configured to draw electrical energy from the battery:
receiving electrical energy from charging circuitry configured to provide electrical energy for charging the battery at a first power converter configured to electrically couple between the charging circuitry and the one or more components; and
transferring charge from the battery or transferring charge to the battery, by a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, based on a power requirement of the one or more components and a power available from the first power converter.

### Claim 5 (depends on 4)

The method of claim 4, further comprising:
operating the bidirectional power converter in a first mode to transfer charge to the battery when the power requirement is lesser than the power available from the first power converter; and
operating the bidirectional power converter in a second mode to transfer charge from the battery when the power requirement is greater than the power available from the first power converter.

### Claim 6 (depends on 5)

The method of claim 5, further comprising:
operating the bidirectional power converter as a buck converter in the first mode; and
operating the bidirectional power converter as a boost converter in the second mode.

### Claim 7

A device comprising:
a battery;
one or more components configured to draw electrical energy from the battery; and
a power management system comprising:
a first power converter configured to electrically couple between charging circuitry configured to provide electrical energy for charging the battery and the one or more components; and
a bidirectional power converter configured to electrically couple between the charging circuitry and the battery, wherein the bidirectional power converter is configured to transfer charge from the battery or transfer charge to the battery based on a power requirement of the one or more components and a power available from the first power converter.

### Claim 8 (depends on 7)

The device of claim 7, wherein the bidirectional power converter is configured to:
operate in a first mode to transfer charge to the battery when the power requirement is lesser than the power available from the first power converter; and
operate in a second mode to transfer charge from the battery when the power requirement is greater than the power available from the first power converter.

### Claim 9 (depends on 8)

The device of claim 8, wherein the bidirectional power converter is configured to:
operate as a buck converter in the first mode; and
operate as a boost converter in the second mode.

### Claim 10 (depends on 7)

The device of claim 7, wherein the bidirectional power converter is a multiphase power converter.