摘要
设计一种高速响应的Regulator电路结构,以期减小Regulator带载瞬变时输出电压的过冲现象。采用输出电压负反馈回路,对主运放的输出负载加以控制,从而在负载突变瞬间对功率管gate实现快速充放电。仅需较小的输出电容量(约几十个n F时),就可在输出电流0~500m A在1 ns突变时获得不超过100 m V的过冲电压和不超过60 ns的过冲宽度。设计的优越性在对比仿真中得以验证,适合应用于输出电流快速瞬变的条件下。
A circuit structure of Regulator with high speed response is designed to reduce the overshoot of the output voltage during Regulator carrier transients. An output voltage negative feedback loop is used to control the output load of the main operational amplifier so as to realize the fast charge discharge of the power tube gate at the sudden change of the load. With a small output capacitance （tens of nF）, the overshoot voltage of no more than 100 mV as well as overshoot width of no more than 60 ns can be obtained when the output current is 0~500 mA at 1 ns. The superiority of the design is verified by contrast simulation, proving that it is suitable for the fast transient output current.
出处
《工业技术创新》
2017年第5期6-11,共6页
Industrial Technology Innovation
