# US 2026/0100652 A1 · Electronic device comprising converter circuit and control method therefor

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- Number: US 2026/0100652 A1
- Document ID: US20260100652A1
- Status: Published application
- Kind: A1
- Application number: 19/416,352
- Filed: 2025-12-11
- Published: 2026-04-09
- Earliest claimed: 2023-06-12
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Keonwoo KIM; Moonyoung KIM
- Web page: https://patentgrep.com/patent/US20260100652A1

## CPC

- H02M 3/285: {Single converters with a plurality of output stages connected in parallel (parallel operation of a plurality of converters in DC distribution networks H02J1/10)}
- H02M 3/33571: {Half-bridge at primary side of an isolation transformer}
- H02M 1/0058: {by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero (using an auxiliary actively switched resonant commutation circuit connected to an intermediate DC voltage or between two push-pull branches of an inverter bridge H02M7/4811; in resonant inverters H02M7/4815; in inverters operating from a resonant DC source H02M7/4826)}
- H02M 1/08: Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M 1/32: Means for protecting converters other than automatic disconnection
- H02M 1/36: Means for starting or stopping converters
- H02M 3/01: {Resonant DC/DC converters}
- H02M 1/0043: {Converters switched with a phase shift, i.e. interleaved (non-isolated DC/DC converters H02M3/1586)}
- Y02B 70/10: Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

The present disclosure relates to an electronic device comprising a converter circuit for current balancing, and a control method therefor. The electronic device may comprise a plurality of half-bridge converters connected in parallel to share a resonance capacitor. The electronic device can control a first half bridge unit included in a first converter circuit and a second half bridge circuit included in a second converter unit such that the first converter circuit and the second converter unit can be sequentially started at a first time interval.

## Claims

### Claim 1

1. An electronic device, comprising:
a first converter circuit having a resonant capacitor and including a first leakage inductor and a first transformer;
a second converter circuit connected in parallel with the first converter circuit to share the resonant capacitor and including a second leakage inductor and a second transformer; and
a control unit configured to control an activation of the first converter circuit and the second converter circuit.
wherein the control unit is configured to control a first half-bridge unit included in the first converter circuit and a second half-bridge unit included in the second converter circuit so that the first converter circuit and the second converter circuit are sequentially activated with a first time interval.

### Claim 2 (depends on 1)

The electronic device of claim 1, comprising an electrolytic capacitor connected in parallel to a secondary side output terminal of the first transformer and a secondary side output terminal of the second transformer.

### Claim 3 (depends on 1)

The electronic device of claim 1, wherein the control unit comprises a soft starter configured to output a second control signal for a switching operation of the second half-bridge unit in response to the first time interval elapsing after a first control signal for a switching operation of the first half-bridge unit is inputted.

### Claim 4 (depends on 3)

The electronic device of claim 3, wherein the soft starter comprises:
a first element unit configured to perform a switching operation at the first time interval in response to charging/discharging by a supply voltage;
a second element unit configured to generate a first switching signal in response to an operation of the first element unit being turned on at the first time interval; and
a switch unit configured to receive the first control signal as input and to output the second control signal in response to the first switching signal.

### Claim 5 (depends on 1)

The electronic device of claim 1, wherein the first half-bridge unit comprises:
a first switching element configured to be turned on or turned off by a first gate signal, which is one of the first control signals; and
a second switching element configured to be turned on or turned off by a second gate signal, which is one of the first control signals.

### Claim 6 (depends on 1)

The electronic device of claim 1, wherein the second half-bridge unit comprises:
a third switching element configured to be turned on or turned off by a third gate signal, which is one of the second control signals: and
a fourth switching element configured to be turned on or turned off by a fourth gate signal, which is one of the second control signals.

### Claim 7 (depends on 1)

The electronic device of claim 1, comprising a third converter circuit connected in parallel with the first converter circuit to share the resonant capacitor,
wherein the control unit is configured to control the second half-bridge unit included in the second converter circuit and a third half-bridge unit included in the third converter circuit so that the second converter circuit and the third converter circuit are sequentially activated with a second time interval.

### Claim 8 (depends on 1)

The electronic device of claim 1, wherein the control unit is configured to control the first time interval and the second time interval to have the same value.

### Claim 9 (depends on 1)

The electronic device of claim 1, wherein the control unit is configured to control the first time interval and the second time interval to have different values.

### Claim 10 (depends on 7)

The electronic device of claim 7, wherein the control unit comprises the soft starter configured to output a third control signal for a switching operation of the third half-bridge unit in response to the second time interval elapsing after a second control signal for a switching operation of the second half-bridge unit is inputted.

### Claim 11 (depends on 10)

The electronic device of claim 10, wherein the soft starter comprises:
a third element unit configured to perform a switching operation at the second time interval in response to charging/discharging by a supply voltage;
a fourth element unit configured to generate a second switching signal in response to an operation of the first element unit being turned on at the second time interval; and
a switch unit configured to receive the second control signal as input and to output the third control signal in response to the second switching signal.

### Claim 12 (depends on 10)

The electronic device of claim 10, wherein the third half-bridge unit comprises:
a fifth switching element configured to be turned on or turned off by a fifth gate signal, which is one of the third control signals; and
a sixth switching element configured to be turned on or turned off by a sixth gate signal, which is one of the third control signals.

### Claim 13 (depends on 4)

The electronic device of claim 4, wherein the first element unit comprises:
a first capacitor located between a terminal to which the supply voltage is inputted and a ground; and
a seventh switching element configured to be switched in response to charging/discharging of the first capacitor.

### Claim 14 (depends on 13)

The electronic device of claim 13, wherein the second element unit comprises an eighth switching element configured to output the first switching signal in response to turning on of the seventh switching element.

### Claim 15 (depends on 4)

The electronic device of claim 4, wherein a resistor and a capacitor are connected in parallel between an output terminal of the switch unit where the second control signal is outputted and a ground.