Ballast control IC simplifies design for industrial HID lighting

Rated at 600V, International Rectifier’s IRS2573DS High-Intensity Discharge (HID) electronic ballast control IC combines a high-side, dual-mode buck controller together with a full-bridge driver, and features a novel buck circuitry that enables continuous-conduction mode control during lamp warm-up and critical-conduction mode during steady state running.

The IRS2573DS incorporates a state machine for controlling the lamp during various operating modes including ignition, warm-up, running and fault mode, and features a multiplier circuit to accurately measure and control lamp power. Additionally, the IRS2573DS offers comprehensive fault detection and fault timer circuitry to detect open circuit, short circuit, failure to ignite, failure to warm-up, and lamp end-of-life fault conditions.

International Rectifier