摘要
考虑到传统线性斜坡补偿对开关电源系统带载能力和瞬态响应的影响,利用与频率成正比的充放电电流形成一次斜坡电流,再利用其一次特性与双极性晶体管的输入、输出特性实现了一种工作频率可变的,斜坡峰值电流随占空比变化的二次特性的斜坡补偿,使斜坡补偿所带来的不足有效减小.最后利用HHNEC 0.35μm的BCD工艺,及Hspice仿真软件对电路进行了仿真验证.
Considering the influence on load capacity and transient response caused by the traditional linear slope compensation The proportional to the frequency of the charge and discharge current is used to form the first order slope current, then use it together with the input and output of the bipolar transistor characteristics realize quadratic slope compensation circuit which can work in different frequency and slope peak current changed with the duty cycle was proposed. The lack of the slope compensation effectively reduced, its performances have been verified by Hspice simulation using the 0.5 um BCD process.
出处
《微电子学与计算机》
CSCD
北大核心
2016年第8期82-85,91,共5页
Microelectronics & Computer
关键词
一次斜坡补偿
二次斜坡补偿
带负载能力
瞬态响应
first-order slope compensation~ quadratic slope compensation
load capacity
transient response
