Design Methodology for Thermal Protection Intelligent Power-Aware LDO Using ETP and PTAT

Abstract

With modern electronic devices should be able to yield stable voltage and current over a variety of environments. Designed LDO regulator castoff in the electronic device is a system that requires numerous voltages and load currents. This paper presents a comprehensive study on the optimization of Low Dropout Voltage Regulators (LDOs) with Excess Thermal Protection (ETP) using an intelligent method. The aim was to improve output voltage stability, efficiency, and thermal management under various operating conditions. The initial output voltage was 5V, and after optimization, it increased to 5.02V, with voltage stability improving from ±0.01V to ±0.02V. The proposed model significantly decreases the power dissipation from 7W to 6.5W, with significant LDO efficiency from 71.4% to 98.5%. The optimization process involved 100 iterations with a convergence time of 2 seconds, achieving an output voltage of 3.501V, and the proposed model reduced the dissipation of power by 6.8W. LDO efficiency improved to 98.5% after optimization, and thermal protection was triggered at 70°C. Peak temperature rise reduced from 30°C to 25°C in traditional optimization and from 30°C to 26°C in optimization. The proposed optimization model achieved 98.5% simulation accuracy, with a temperature recovery time of 2.5 seconds, compared to 4 seconds before optimization. These results demonstrate the successful application of optimization techniques in enhancing the performance of LDOs, providing improved voltage regulation, thermal stability, and efficiency, which can be crucial for modern electronics requiring robust power management.