Design of Current Source with Base Current Compensation and Overtemperature Protection Circuit
This paper describes that based on the HHNEC 0.18μm BCD process,a bandgap reference current source with high-order temperature compensation was designed and implemented.This article uses bipolar transistor base current for temperature compensation,and the circuit does not include an operational amplifier,simplifying the circuit structure while achieving more accurate output over a wide temperature range.By utilizing the principle of current comparison,an over temperature protection function with temperature hysteresis has been implemented to prevent thermal shock while ensuring the stability of chip operation.
bandgap referenceover temperature protectionhigh order temperature compensationcurrent comparison
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维普
