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本文探讨了降低线性集成稳压电源的功耗和提高它们的抗辐射能力的技术途径。介绍了一种新型稳压器电路,以低功耗电流放大器为其基础,改电压控制型为电流控制型,使电路在满载情况下,输入输出最小压差降到1V左右;并具有良好的启动保护功能,纹波抑制比可达70db以上;当输出电压V_o=12V时,其效率的典型值为90％。 为了尽量提高这种电路的抗辐射能力,在设计电路时就注意到了降低有源元件与无源元件的数量比,使电路设计尽量简化。并充分注意到光电流补偿单元的设置和增益裕量的限度。采用了介质隔离技术和晶体管归一化的标准设计,在工艺参数的设计中采用特殊加固晶体管的设计方法。使该电路的抗中子能力比初步加固的器件提高一倍左右,抗γ瞬时辐照能力提高二倍以上。
This article explores ways to reduce the power consumption of linearly-integrated regulated power supplies and increase their resistance to radiation. A new type of voltage stabilizer circuit is introduced, which is based on low power current amplifier. The voltage control type is a current control type, so that the minimum voltage drop between input and output drops to about 1V under full load condition and has a good Start protection, ripple rejection ratio up to 70db or more; when the output voltage V_o = 12V, the efficiency of the typical value of 90%. In order to try hard to improve the radiation resistance of this kind of circuit, when designing the circuit, we noticed that reducing the number ratio of active components and passive components, the circuit design was simplified as much as possible. And fully noticed the setting of the photocurrent compensation unit and the limit of the gain margin. Media isolation technology and the transistor standardization of the design, the design of process parameters in the design of special reinforcement transistor. So that the anti-neutron capability of the circuit than the initial reinforcement of about double the anti-γ instantaneous irradiation increased by more than twice.