Thermal balance conversion circuit

摘要

A thermal balance conversion circuit includes a voltage conversion circuit, a temperature detection circuit, a PWM controller, and a signal integration controller. The voltage conversion circuit includes a plurality of voltage conversion units, and each of the voltage conversion units converts the DC voltage of a external power to a driving voltage. The temperature detection circuit includes a plurality of temperature detection units, and the plurality of temperature detection units detects temperatures of the plurality of voltage conversion units. The pulse width modulation controller outputs a plurality of different phase PWM signals according to each of the voltage conversion units. The signal integrated controller receives the PWM signals from the PWM controller to control the voltage conversion of each of the voltage conversion unit.

主权项

1. A thermal balance conversion circuit comprising:
a voltage conversion circuit connected between an external power and a load, the voltage conversion circuit comprising a plurality of voltage conversion units, the plurality of voltage conversion units converting a direct current (DC) voltage of the external power to a driving voltage needed by the load; a temperature detection circuit comprising a plurality of temperature detection units, the plurality of temperature detection units respectively detecting temperatures of the plurality of voltage conversion units; a pulse width modulation (PWM) controller outputting a plurality of PWM signals in different phases corresponding to each of the voltage conversion units; and a signal integration controller connected to the voltage conversion circuit, the temperature detection circuit, and the PWM controller, the signal integration controller generating temperature detection signals corresponding to each of the voltage conversion units according to the temperature detection signals output by each of the temperature detection unit, comparing and finding a maximum value and a minimum value among the temperature detection signals in a unit cycle, transferring one of the plurality of the PWM signals of one of the plurality of the voltage conversion units corresponding to the maximum value to another one of the plurality of the PWM signals of another one of the plurality of the voltage conversion units corresponding to the minimum value and replacing the voltage conversion unit corresponding to the maximum value with the voltage conversion unit corresponding to the minimum value to convert the DC voltage of the external power; wherein the plurality of voltage conversion units converts the DC voltage of the external power to the driving voltage according to the plurality of PWM signals output by the signal integration controller.