A novel constant power control circuit for HID electronic ballast

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36 Citations (Scopus)


This paper presents a constant power control circuit for a three-stage high-intensity discharge (HID) electronic ballast. The three-stage electronic ballast is composed of a boost pre-regulator to achieve a high power factor, a DC/DC buck converter to regulate lamp current with constant lamp power, and a full-bridge inverter to drive the HID lamp with a low-frequency ac squarewave current. The buck converter operating in current mode utilizes current sense level-shift technique to achieve constant power output. The proposed constant power control circuit is easily designed and implemented for the three-stage HID electronic ballast. Finally, a laboratory prototype of a 70 W HID electronic ballast is implemented. The measured results show that the proposed ballast can be applied for various HID lamps with low lamp power variation (less than 0.6%).

Original languageEnglish
Pages (from-to)1573-1582
Number of pages10
JournalIEEE Transactions on Power Electronics
Issue number5
Publication statusPublished - 2007 Sep

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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