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ML4830 - Electronic Ballast Controller

Description

The ML4830 is a complete solution for a dimmable, high power factor, high efficiency electronic ballast.

Contained in the ML4830 are controllers for “boost” type power factor correction as well as for a dimming ballast.

Features

  • s Complete Power Factor Correction and Dimming Ballast Control on one IC Low Distortion, High Efficiency Continuous Boost, Average Current sensing PFC section Programmable Start Scenario for Rapid or Instant Start Lamps Selectable Variable Frequency dimming and starting Programmable Restart for lamp out condition to reduce ballast heating Over-Temperature Shutdown replaces external heat sensor for safety PFC Over-Voltage comparator eliminates output “runaway” due to load removal Large oscillato.

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Datasheet Details

Part number ML4830
Manufacturer Micro Linear
File Size 218.51 KB
Description Electronic Ballast Controller
Datasheet download datasheet ML4830 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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March 1997 ML4830* Electronic Ballast Controller GENERAL DESCRIPTION The ML4830 is a complete solution for a dimmable, high power factor, high efficiency electronic ballast. Contained in the ML4830 are controllers for “boost” type power factor correction as well as for a dimming ballast. The Power factor circuit uses the average current sensing method with a gain modulator and over-voltage protection. This system produces power factors of better than 0.99 with low input current THD at > 95% efficiency. Special care has been taken in the design of the ML4830 to increase system noise immunity by using a high amplitude oscillator, and a gain modulator. An overvoltage protection comparator stops the PFC section in the event of sudden load decrease.
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