PDF《大功率 IGBT 驱动器 2SD315A 的分析与测试》

大功率 IGBT 驱动器 2SD315A 的分析与测试 姜奋平 1,尹向阳 1,张黎 2, (1 .

广州金升阳科技有限公司,广东广州 510660;

2 .重庆通信学院电力工程系,重庆 400035) 摘要:对大功率 IGBT 驱动器 2SD315A 的原理进行了分析与实测论证.包括驱动信号调制、隔离传输、 解调及放大.说明了过流,短路及欠压的保护原理等.并给出了相关的实测波形及实际应用要点. 关键词:IGBT;

驱动器;

2SD315A 中图分类号:TM921.51 基金项目:重庆市自然科学基金项目(编号:2007BB21 07) Analysis and Test of the High Power IGBT Driver 2SD315A JIANG JIANG JIANG JIANG Fen Fen Fen Fen- - - -ping ping ping ping1

1 1 1,Yin ,Yin ,Yin ,Yin Xiang-Yang Xiang-Yang Xiang-Yang Xiang-Yang1

1 1 1, , , ,Zhang Zhang Zhang Zhang li li li li2

2 2 2, (1. Mornsun Guangzhou Science &

Technology Co., Ltd., Guangzhou, Guangdong 510660, China;

2. Department of Electrical Engineering, Chongqing Communication College, Chongqing 400035, China) Abstract: Abstract: Abstract: Abstract: Analysis Analysis Analysis Analysis the the the the schematic schematic schematic schematic of of of of the the the the high high high high power power power power IGBT IGBT IGBT IGBT Driver Driver Driver Driver 2SD315A, 2SD315A, 2SD315A, 2SD315A, I I I Including ncluding ncluding ncluding M M M Modulation odulation odulation odulation 、transmission transmission transmission transmission and and and and insulation insulation insulation insulation、demodulation demodulation demodulation demodulation and and and and magnify magnify magnify magnify of of of of drive drive drive drive signal signal signal signal. . . . as as as as expound expound expound expound the the the the protection protection protection protection of of of of the the the the over over over over current current current current、short short short short and and and and under under under under voltage. voltage. voltage. voltage. A A A And nd nd nd the the the the outline outline outline outline for for for for practical practical practical practical application application application application and and and and test test test test waveforms waveforms waveforms waveforms are are are are provided. provided. provided. provided. Key Key Key Key words: words: words: words: IGBT;

driver;

2SD315A

一、引言: 由于电能需求增加, 提高电能的利用效率成为 当前急需解决的问题.IGBT(绝缘栅双极晶体管) 作为一种高耐压、大电流、高速、低饱和压降的功 率器件, 在功率变换领域中应用越来越广泛. IGBT 驱动器作为 IGBT 的可靠应用,充分发挥其性能的 关键,其性能关系到系统的效率与可靠性.在大功 率的功率变换器中,国外的 IGBT 驱动器,包括 SEMIKRON, EUPEC 及CONCEPT 的产品应用比 较广泛.本文以 CONCEPT 公司的大功率 IGBT 驱 动器 2SD315A 为例,分析其工作原理并给出相关 的测试结果和应用说明.

二、2SD315A 基本功能 2SD315A具有集成度高,隔离电压高和驱动功 率大等特点,适用于并联运用的IGBT模块或大功 率的IGBT模块的驱动.2SD315A有两种工作模式, 即半桥模式和直接模式, 在半桥模式下还可直接产 生和控制死区时间,其最高开关频率可达100KHz, 在直接模式下控制信号占空比可连续(0~100%)可调.其主要电路由三个功能块组成,如下(图一) 所示.第一功能块是辅助电源和信号输入两块组 成,其中一块LDI (Logic To Driver Interface , 逻辑 驱动转换接口)是将主控制板中的PWM信号进行 整形放大,并根据需要进行控制,之后传递到信号 变压器, 同时其也检测从信号变压器回传的故障信 号,将故障信号处理后发送到故障输出端;