關鍵詞： IR , IRPLHID2 , HID燈 , 鎮流器

IR公司的70W HID(氙氣燈)鎮流器參考設計IRPLHID2采用IRS2573D器件,輸入電壓185V-265V,可驅動1 x 70W HID燈,具有高功率因素/低總諧波失真,可控制起輝,低頻方波工作,燈電流和功率可控制,開路和無燈保護.而IRS2573D是全集成全保護的600V HID控制器,能驅動所有類型的HID燈,內部電路提供了起輝,加熱,運行和故障保護模式.本文介紹了IRS2573D主要特性,框圖,應用框圖以及采用IRS2573D的70W HID燈鎮流器IRPLHID2參考設計主要指標,參考設計框圖和電路圖,以及材料清單和PCB布局圖.

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

2012-9-6 13:21:42 上傳

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圖1.IRS2573D方框圖

2012-9-6 13:21:43 上傳

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圖2.IRS2573D應用框圖

采用IRS2573D的70W HID燈鎮流器IRPLHID2參考設計

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.

IRPLHID2參考設計主要特性:

 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

2012-9-6 13:21:45 上傳

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