【产品】重量极轻的LLC谐振3.5 kW全桥OBC变压器BC3.5LFB1.4

时间： 2019-06-09 来源：PREMO

技术问答

PREMO成立于1962年，是RFID汽车天线开发方面极具影响力的全球技术领导者，也是全球主要电子元件制造商之一

BC3.5LFB1.4是其开发的一款重量极轻的全桥OBC变压器，广泛应用于车载EV/PHV AC（插电混动空调开关）/直流充电器；

图1 BC3.5LFB1.4的尺寸图（单位：mm）

BC3.5LFB1.4的产品特点：

LLC谐振3.5 kW全桥变压器

使用Lr =22μH和Cr = 33nF

频率范围70-200kHz

可增强主极侧/次级侧与核心之间的绝缘

使用UL94和RoHS材料（F / 155°C）

基于AEC-Q200的设计

重量：约350克

产品操作规格

Vin = 220-420Vdc / Vout = 200-430Vdc

Ip = 19Arms MAX / Is = 18.5Arms MAX

工作温度-40 / + 140°C带冷却（灌封）

图2 BC3.5LFB1.4的典型电器图

电气规格

25ºC时的电感

L1 = Lp (100kHz/1Vac） 130µH ±7.5%

25ºC时的直流电阻

R1 17mΩ TYP (19mΩ MAX)

R2 13mΩ TYP (15mΩ MAX)

匝数比

N1:N2=1.4:1

泄漏电感

L1lk (100kHz/1Vac, N2 shorted) 2µH MAX

介电强度

{N1}/{N2}/{CORE} 4kVAc/50Hz/5mA/1min*

{N2}/{CORE 2kVAc/50Hz/3mA/1min*

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