Avago公司的ACPL-38JT是汽车IGBT用栅极驱动光耦器,输出电流2.5A,集成了去饱和(VCE)检测和故障状态反馈,满足汽车电子AEC-Q100 Grade 1标准要求,可驱动IC = 150 A,VCE = 1200 V的IGBT,最大开关速度500ns,IGBT”软关断”,5 –30工作电压,工作温度-40℃ 到+125℃,主要用于绝缘IGBT/MOSFET逆变器栅极驱动,汽车用DC/DC转换器,AC和无刷DC马达驱动以及UPS.本文介绍了ACPL-38JT主要特性,功能方框图,马达控制系统应用方框图以及推荐的应用电路图.

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应用:

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


图1.ACPL-38JT功能方框图

图2.马达控制系统应用方框图

图3.同相抗饱和保护栅极驱动电路图

图4.ACPL-38JT推荐的应用电路图

详情请见:
http://www.avagotech.com/docs/AV02-2546EN