Invention Grant
- Patent Title: Single stage power factor corrected LED driver circuit
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Application No.: US14830026Application Date: 2015-08-19
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Publication No.: US09763291B2Publication Date: 2017-09-12
- Inventor: Pandu Ranga Rao Somarowthu , Sunit Kumar Saxena , Deepak Bhimrao Mahajan
- Applicant: HONEYWELL INTERNATIONAL INC.
- Applicant Address: US NJ Morris Plains
- Assignee: HONEYWELL INTERNATIONAL INC.
- Current Assignee: HONEYWELL INTERNATIONAL INC.
- Current Assignee Address: US NJ Morris Plains
- Agency: Lorenz & Kopf, LLP
- Main IPC: H05B33/08
- IPC: H05B33/08 ; H02M1/42 ; H02M3/158 ; H02M7/06

Abstract:
A single-stage power factor corrected light emitting diode (LED) driver circuit having a circuit input node, a circuit output node, and a circuit common node includes a first inductor, a second inductor, a coupling capacitor, a controllable switch, and an LED string. The first inductor is electrically connected in series between the circuit input node and the coupling capacitor, the second inductor is electrically connected in series between the circuit output node and the circuit common node, the coupling capacitor is electrically connected in series between the first inductor and the circuit output node, the controllable switch is electrically connected in series between a first internal circuit node and the circuit common node, the first internal circuit node located between the first inductor and the coupling capacitor, and the LED string is electrically connected in parallel with only the second inductor.
Public/Granted literature
- US20170055320A1 SINGLE-STAGE POWER FACTOR CORRECTED LED DRIVER CIRCUIT Public/Granted day:2017-02-23
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