IR公司的IRS2573D 是全集成全保護600V HID燈" title="HID燈">HID燈控制集成電路，集成了點火時序控制，恒流燈功率控制，可編全橋運行頻率，可編過壓和欠壓保護以及可編過流保護。器件還具有600V高邊和低邊全橋驅動器，600V高邊降壓驅動器，低邊點火FET柵極驅動器。本文介紹了IRS2573D主要特性，方框圖，典型應用電路圖和70W HID鎮流器" title="鎮流器">鎮流器主要特性，方框圖，電路圖，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


圖1。IRS2573D方框圖

圖2。IRS2573D典型應用電路圖

70W HID鎮流器

HID Ballast for 70W Lamp Using the IRS2573D

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.

70W HID鎮流器主要特性：

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


圖3。70W HID鎮流器外形圖

圖4。70W HID鎮流器方框圖

圖4。70W HID鎮流器電路圖（1）

圖5。70W HID鎮流器電路圖（2）

70W HID鎮流器材料清單：



圖6。70W HID鎮流器PCB布局圖
詳情請見：
http://www.irf.com/product-info/datasheets/data/irs2573dspbf.pdf
和
http://www.irf.com/technical-info/refdesigns/irplhid2.pdf