STLUX385ATR datasheet(9/99 Pages) STMICROELECTRONICS

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STLUX385A

Description

The STLUX385A is part of the MASTERLUX™ family of ST Microelectronics digital devices

tailored for lighting and power conversion. The STLUX385A has been successfully

integrated in a wide range of architectures and applications, starting from simple buck

converters for LED driving, boost for power factor correction, half-bridge resonant

converters for dimmable LED strings, up to full-bridge control in HID lamp ballasts, wireless

power chargers and TV power supplies.

1.1

Introducing SMED

The heart of the STLUX385A is the SMED (state machine event driven) technology which

allows the device to operate six independently configurable PWM clocks with a maximum

resolution of 1.3 ns. A SMED is a powerful autonomous state machine, which is

programmed to react to both external and internal events and may evolve without any

software intervention. The SMED reaction time can be as low as 10.4 ns, giving the

STLUX385A the ability of operating in time-critical applications. The SMED offers superior

performance when compared to traditional, timer based, PWM generators.

Each SMED is configured via the STLUX385A internal microcontroller. The integrated

controller extends the STLUX385A reliability and guarantees more than 15 years of both

operating lifetime and memory data retention for program and data memory after cycling.

A set of dedicated peripherals complete the STLUX385A:

•

4 analog comparators with configurable references and 50 ns max. propagation delay.

It is ideal to implement zero current detection algorithms or detect current peaks.

•

10-bit ADC with configurable op-amp and 8 channel sequencer.

•

DALI: hardware interface that provides full IEC 60929 and IEC 62386 slave interface.

•

96 MHz PLL for high output signal resolution.

1.2

Documentation

The following datasheet contains the description of features, pinout, pin assignment,

electrical characteristics, mechanical data and ordering information.

•

For information on programming, erasing and protection of the internal Flash memory,

please refer to the STM8 Flash programming manual (PM0047).

•

For information on the debug and SWIM (single wire interface module) refer to the

STM8 SWIM communication protocol and debug module user manual (UM0470).

•

For information on the STM8 core, please refer to the STM8 CPU programming manual

(PM0044).

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