This application note describes an innovative analog solution for a complete ballast circuitry optimized to feed a 35 W high intensity discharge (HID) metal halide lamp (MHL), without making use of any microcontroller to regulate and control the lighting output. This circuitry is used on demonstration board STEVAL-ILH002V1 shown in figure 1. The lamps used for this design are a 35 W metal halide lamp CDM-T (Philips) and an HCI-T (Osram).
This document details the design of a 35 W electronic ballast for high-intensity discharge (HID) metal halide lamps. The circuit is optimized to feed lamps such as the Philips CDM-T and Osram HCI-T without requiring a microcontroller for regulation. The design utilizes a demonstration board, STEVAL-ILHO02V1, to showcase the complete ballast circuitry.
| Lamp wattage | 35 W |
|---|---|
| Ignition voltage | 2 kV to 5 kV |
| Operating frequency | 70 kHz |
It is designed for 35 W high intensity discharge (HID) metal halide lamps, specifically the Philips CDM-T and Osram HCI-T.
No, the circuitry is an innovative analog solution that does not make use of any microcontroller to regulate and control the lighting output.