原标题：IR IRS2573D 70W HID灯参考设计方案

　　IR 公司的IRS2573D是全集成全保护的600V氙气灯(HID)控制器,能驱动所有类型的氙气灯(HID)灯. IRS2573D包括点火时间控制,恒定灯功率控制,可编程全桥运行频率,可编程过压和欠压保护以及可编程过流保护. 此外,器件还集成了600V高边和低边全桥驱动器,以及600V高边降压驱动器等.本文介绍IRS2573D 主要特性,功能方框图,以及典型应用电路和70W HID灯参考设计电路图,主要指标,材料清单和PCB布局图.

　　The IRS2573D is a fully-integrated, fully-protected 600V HID control IC designed to drive all types of HID lamps.

　　Internal circuitry provides control for ignition, warm-up, running and fault operating modes. The IRS2573D features include ignition timing control, constant lamp power control, programmable full-bridge running frequency, programmable over and under-voltage protection and programmable over-current protection. Advanced protection features such as failure of a lamp to ignite, open load, short-circuit and a programmable fault counter have also been included in the design.

　　IRS2573D 主要特性:

　　Buck, full-bridge and lamp control in one IC

　　Continuous/critical-conduction mode buck control

　　600V high and low-side full-bridge driver

　　600V high-side buck Driver

　　Low-side ignition FET gate driver

　　Integrated bootstrap FETs for full-bridge high-side drivers

　　Constant lamp power control

　　Programmable buck cycle-by-cycle over-current protection

　　Programmable buck output voltage limitation

　　Programmable lamp current limitation

　　Programmable full-bridge frequency

　　Fault latch reset input

　　Programmable ignition counter (21sec/64sec typical)

　　Programmable lamp under-voltage fault counter (197sec typical) for short-circuit or lamp does not warm-up

　　Fast transient lamp under-voltage event counter (16384 typical) for arc instability or end-of-life

　　Programmable lamp over-voltage fault counter (787sec typical) for open-circuit or lamp extinguishes

　　Programmable good fault reset counter (2730sec typical)

　　Micro-controller compatible timing thresholds

　　Internal 15.6V zener clamp diode on VCC

　　Micropower startup (150μA)

　　Latch immunity and ESD protection on all pins

　　图1.IRS2573D功能方框图

　　图2.IRS2573D典型应用电路图

　　70W HID灯IRPLHID2参考设计

　　The IRPLHID2 reference design kit consists of a complete ballast solution for a 70W HID lamp. The design contains an EMI filter, low voltage power supply, active power factor correction and a ballast control circuit using the IRS2573D. This demo board is intended to help with the evaluation of the IRS2573D HID ballast control IC, demonstrate PCB layout techniques and serve as an aid in the development of production ballasts using the IRS2573D.

　　IRPLHID2参考设计主要特性:

　　Drives 1 x 70W HID lamp

　　Input voltage range: 185-265 VAC

　　High Power Factor / Low Total Harmonic Distortion

　　Controlled ignition

　　Low frequency square wave operation

　　Lamp power and current control

　　Open circuit and no-lamp protection

　　Short circuit and lamp failure to warm-up protection

　　Lamp end-of-life shutdown

　　IRS2573DSPbF HID Ballast Control IC

　　IRPLHID2参考设计主要指标:

　　图3.IRPLHID2参考设计外形图

　　图4.IRPLHID2参考设计方框图　　

　　IRPLHID2参考设计材料清单(BOM):