ENERGY STAR Compliant--Low Cost LED Dimming
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This ENERGY STAR LED dimming circuit with Bridge + CCR and PWM Sensing topology offers 60 percent minimum efficiency and works on a wide variety of dimmers. The circuit has one set of functionalities for LED management and another for dimmer management and PWM Signal. The LED management portion charges the output capacitor to a "DC" state while the dimmer management portion provides loading current for an SCR dimmer and provides a gate voltage to a series pass MOSFET transistor.
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