“Controlling HID lamp power within an accurate window has traditionally presented a complex design challenge. By offering complete HID electronic ballast system know-how in a chip, the highly integrated, feature-rich IRS2573DS allows companies that already have a market presence in lighting to enter the HID market very rapidly with minimal know-how,” said Tom Ribarich, IR’s director, Lighting Systems and Applications, Energy Saving Products Business Unit. “Furthermore, by integrating a large portion of the HID ballast system circuitry into a single device, overall system cost can be greatly reduced,” he added.
The IRS2573DS offers a high degree of flexibility and programmability. The device 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, as well as lamp ignition enabler and timer.