Design and analysis of a low temperature float high precision band-gap reference
Xiang Gaolin · Electronic Components and Materials · 2013
According to the fundamentals and characteristics of band gap circuits,and integrated temperature compensation and resistive subdivision techniques,a band-gap reference was designed which could be applied to the switching power supply PWM controller and isolation feedback generator.The circuit of the reference was based on 6 μm BJT process.The simulation result shows when the power supply voltage is 15 V,25 ℃,the output of VREFis 5 V.When 12 V≤VCC≤25 V,the line regulation of the circuit is 0.16 mV.When 1 mA≤I0≤20 mA,the load regulation of the circuit is about 1.61 mV.The temperature stability is good with the temperature coefficient of about 0.05 mV/ ℃.