Invention Grant
- Patent Title: LED direct AC drive circuit
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Application No.: US15423775Application Date: 2017-02-03
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Publication No.: US09913325B1Publication Date: 2018-03-06
- Inventor: Ningliang Mi
- Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- Applicant Address: US AZ Phoenix
- Assignee: Semiconductor Components Industries, LLC
- Current Assignee: Semiconductor Components Industries, LLC
- Current Assignee Address: US AZ Phoenix
- Agency: Okamoto & Benedicto LLP
- Main IPC: H05B33/08
- IPC: H05B33/08

Abstract:
A light emitting diode (LED) direct AC drive (DACD) circuit includes LED groups that are connected in series. An LED DACD controller includes current regulators that regulate the LED current of the LED groups. The LED DACD controller measures an on-time of an LED group, and regulates the LED current of the LED groups based on the measured on-time of the LED group.
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