L6585DE 功率因数校正 STM

L6585DE

功率因数校正 - PFC Combo IC for PFC and ballast control

Device description L6585DE

The L6585DE embeds a high performance PFC controller, a ballast controller and all the

relevant drivers necessary to build an electronic ballast.

The PFC section achieves current mode control operating in transition mode, offering a

highly linear multiplier including a THD optimizer that allows for an extremely low THD, even

over a large range of input voltages and loading conditions.

The PFC output voltage is controlled by means of a voltage-mode error amplifier and a

precise internal voltage reference.

Features L6585DE

■ PFC section

– transition mode PFC with over-current

protection

– over-voltage protection

– feedback disconnection

– under-voltage lockout

– PFC choke saturation detection

– THD optimizer

■ Half-bridge section

– preheating and ignition phases

independently programmable

– 3 % oscillator precision

– 1.2 μs dead time

– programmable and precise end-of-life

protection compliant with all ballast

configurations

– smart hard switching detection

– fast ignition voltage control with choke

saturation detection

– half-bridge over-current control