# US 12,764,841 B2 · Intelligent change-over control circuit for LED power supply

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- Number: US 12,764,841 B2
- Document ID: US12764841B2
- Status: Granted
- Kind: B2
- Application number: 19/006,957
- Filed: 2024-12-31
- Published: 2026-06-11
- Granted: 2026-10-13
- Earliest claimed: 2024-12-06
- Assignees: Huizhou Riheng Technology Co., Ltd.
- Applicants: Huizhou Riheng Technology Co., Ltd.
- Inventors: Jian Lu
- Web page: https://patentgrep.com/patent/US12764841B2

## CPC

- H05B 45/325: Pulse-width modulation [PWM]
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

The present disclosure discloses an intelligent change-over control circuit for an LED power supply, including a single chip microcomputer control module, a main power module, a main power switch module, a voltage control module, a current control module, a pulse width control module, at least one pulse width adjustment module and other modules. The circuit in the present disclosure is reasonable in design, can automatically recognize a voltage, a current and a power required by an LED lamp and finally output an accurate voltage and current to ensure the LED lamp can work in the more appropriate state, not only can prolong the service life, but also can avoid resource waste and save energy, and can be automatically matched with various types of LED lamps with various voltages and currents via the same LED power supply.

## Claims

### Claim 1

An intelligent change-over control circuit for a light emitting diode (LED) power supply, comprising a single chip microcomputer control module, a main power module, a main power switch module, a voltage control module, a current control module, a pulse width control module, and at least one pulse width adjustment module, wherein the single chip microcomputer control module is electrically connected with the main power switch module, the voltage control module, the current control module and the pulse width control module, respectively, the main power module is electrically connected with the main power switch module, and wherein the at least one pulse width adjustment module having a first pulse width adjustment module, a second pulse width adjustment module, and a third pulse width adjustment module electrically connected with the pulse with control module, respectively.

### Claim 2 (depends on 1)

The intelligent change-over control circuit for the LED power supply of claim 1, further comprising a 16V power module, wherein the 16V power module is electrically connected with the main power switch module.

### Claim 3 (depends on 2)

The intelligent change-over control circuit for the LED power supply of claim 2, further comprising a 10V power module, wherein the 10V power module is electrically connected with the 16V power module.

### Claim 4 (depends on 3)

The intelligent change-over control circuit for the LED power supply of claim 3, further comprising a 5V power module, wherein the 5V power module is electrically connected with the 10V power module and the single chip microcomputer control module.

### Claim 5 (depends on 1)

The intelligent change-over control circuit for the LED power supply of claim 1, further comprising a change-over switch module, wherein the change-over switch module is electrically connected with the single chip microcomputer control module.

### Claim 6 (depends on 1)

The intelligent change-over control circuit for the LED power supply of claim 1, further comprising a burning interface, wherein the burning interface is electrically connected with the single chip microcomputer control module.