The IRS2573DS high-intensity discharge (HID) electronic ballast control IC for low-, medium- and high-power general purpose industrial HID applications, combines a high-side, dual-mode buck controller together with a full-bridge driver. The device’s buck circuitry enables continuous-conduction mode control during lamp warm-up and critical-conduction mode during steady state running. The driver includes all high- and low-side gate driver outputs as well as integrated bootstrap MOSFETs for the high-side supply voltages. 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 measure and control lamp power. Additionally, the IRS2573DS offers 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. For more information, visit: www.irf.com.