摘要
在APFCBoost电路中,当需要高电压输出时,电压误差放大器易饱和输出致电压环失效,使基准电流幅值达到最大,进而使电感电流无法继续增加,最终输出电压小于设定值。针对该问题,文中提出根据电压环方程式得出的电压环动态稳定性判据来检验设计参数是否能使电压环动态稳定工作,进而使输出电压达到设定值。
In APFC Boost converters, high output voltage can lead voltage error amplifier saturated out and voltage- loop invalidation, which can let reference current maximum. Then inductance current can＇t increase and output voltage fall short of design. Aimed at this problem, dynamic stability criterion of voltage-loop is proposed in the paper, which is got by voltage-loop equation and used in judging whether make voltage-loop working in dynamic stability or not.
出处
《通信电源技术》
2007年第3期64-66,共3页
Telecom Power Technology
