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L6585DE

Device description

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Device description

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.

The ballast controller offers the designer a very precise oscillator, a logic that manages all

the operating steps and a full set of protection features:

●

Programmable end-of-life detection, compliant with both lamp-to-ground and capacitor-

to-ground configurations

●

Over-current protection with either current limiting or choke saturation protection

●

Hard switching events detection

High current capability drivers for both the PFC (300 mA source and 600 mA sink) and the

half-bridge (290 mA source and 480 mA sink) also allow ballast designs for very high output

power (up to 160 W).

SO-20 bảng dữ liệu(PDF) 13 Page - STMicroelectronics