Avago公司的ACPL-38JT是汽車IGBT用柵極驅(qū)動光耦器,輸出電流2.5A,集成了去飽和(VCE)檢測和故障狀態(tài)反饋,滿足汽車電子AEC-Q100 Grade 1標準要求,可驅(qū)動IC = 150 A,VCE = 1200 V的IGBT,最大開關(guān)速度500ns,IGBT”軟關(guān)斷”,5 –30工作電壓,工作溫度-40℃ 到+125℃,主要用于絕緣IGBT/MOSFET逆變器柵極驅(qū)動,汽車用DC/DC轉(zhuǎn)換器,AC和無刷DC馬達驅(qū)動以及UPS.本文介紹了ACPL-38JT主要特性,功能方框圖,馬達控制系統(tǒng)應(yīng)用方框圖以及推薦的應(yīng)用電路圖.

ACPL-38JT:Automotive Gate Drive Optocoupler with R2Coupler™ Isolation, 2.5 Amp Output Current, Integrated Desaturation (VCE) Detection and Fault Status Feedback Avago’s automotive 2.5 Amp Gate Drive Optocoupler with Integrated Desaturation (VCE) Detection and Fault Status Feedback makes automotive IGBT VCE fault protection compact, affordable, and easy-to-implement while satisfying automotive AEC-Q100 Grade 1 semiconductor requirement.

Avago R2Coupler isolation products provide the reinforced insulation and reliability needed for critical in automotive and high temperature industrial applications

ACPL-38JT主要特性:

2.5 A maximum peak output current

Drive IGBTs up to IC = 150 A, VCE = 1200 V

Optically isolated, FAULT status feedback

SO-16 package

CMOS/TTL compatible

500 ns max. switching speeds

“Soft” IGBT turn-off

Integrated fail-safe IGBT protection

– Desat (VCE) detection

– Under Voltage Lock-Out protection (UVLO) with hysteresis

User configurable: inverting, noninverting, auto-reset, auto-shutdown

Wide operating VCC range: 15 to 30 Volts

-40℃ to +125℃ operating temperature range

15 kV/us min. Common Mode Rejection (CMR) at VCM =1500 V

Qualified to AEC-Q100 Grade 1 Test Guidelines

Regulatory approvals (Pending):

– UL1577, CSA

– IEC/EN/DIN EN 60747-5-2

ACPL-38JT應(yīng)用:

Automotive Isolated IGBT/MOSFET Inverter gate drive

Automotive DC-DC Converter

AC and brushless dc motor drives

Industrial inverters for power supplies and motor controls

Un-interruptible Power Supplies


圖1.ACPL-38JT功能方框圖

圖2.馬達控制系統(tǒng)應(yīng)用方框圖

圖3.同相抗飽和保護柵極驅(qū)動電路圖

圖4.ACPL-38JT推薦的應(yīng)用電路圖

詳情請見:
http://www.avagotech.com/docs/AV02-2546EN