STEVAL-ILD005V1

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产品概述

描述

The STEVAL-ILD005V1 evaluation board implements a simple and cost-effective MOS-based reverse phase cut dimming solution for analog wall dimmers using a pair of STF17N62K3 power MOSFETs controlled by a triple 3-input NOR gate to effectively dim either resistive or capacitive lighting loads (i.e. halogen lamps, electronic low voltage transformers and various dimmable CFL/LED lamps). The AC analog control dimming technique employed allows for both on/off power switching and up/down dimming functions through a single linear rotary potentiometer equipped with a mechanical switch which opens the circuit at minimum setting. Control of the board is achieved using a triple 3-input NOR gate (pin-to-pin compatible with a ST's HCF4025BE 14-lead dual in-line CMOS gate logic device in plastic SO-14 micropackage) which acts as a gate driving voltage signal source, performs zero crossing detection and timing through the use of a few other passive components and diodes.

所有功能
Operation for 2-wire wall dimmer

Trailing-edge control only (compatible with all lamps commonly found on the market)

Operation on 110 V or 230 V rms line voltage (±10%) and 50 Hz or 60 Hz line frequency;

Dimmable power range (without heatsinks mounted on MOSFETs)

40 W to 300 W for 230 V rms line

15 W to 90 W for 110 V rms line

Maximum operating ambient temperature: 50 °C

Power efficiency @ Max power - 230 V > 95%

Power factor @ Max power > 0.98
Control and regulation interface with a switched type single linear rotary potentiometer

Compliance with EMC standards:

IEC 61000-4-5: criteria A for 2 kV surge

Compliant with EN55015 with 300 W - 230 V halogen lamp

Flicker-free dimming performance

Smooth dimming operation and silent dimming control with no buzzing or audible noise

Acceptable levels of EMI noise without the need for LC filters to reduce conducted emission disturbances

Low inrush current generation

RoHS compliant
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