Patent ID: 9716398
Date: 2017-07-25
CPC Classifications: H02J,H03F,H03K

Claim:
1. A driving device with correction function, one end thereof connected to a power supply unit and the other end thereof connected to a ground load, and the ground load activated by the power supply unit, and the driving device comprising: an arithmetic processing unit including a first end, a second end and a third end, and the first end and the second end are connected to a sensing resistor between the power supply unit and the ground load, and a voltage different signal is detected at two ends of the sensing resistor, and the third end signal is output a voltage signal; and an offset voltage correction unit electrically connected to the arithmetic processing unit to correct an offset voltage generated by the arithmetic processing unit, and the offset voltage correction unit including a power activating delay circuit, a comparator and a logic control circuit, wherein a negative input end of the comparator is connected to a reference voltage signal and a positive input end thereof is connected to the output voltage signal of the arithmetic processing unit to form a feedback circuit, the offset voltage is compared to determine to be a positive offset voltage or a negative offset voltage so as to output a control signal to the logic control circuit, when the power is turned on, the power activating delay circuit counts to a predetermined delay time to generate an activating signal to the logic control circuit and the logic control circuit generates an activating signal to trigger the arithmetic processing unit to perform an action, so as to reset the positive voltage or the negative voltage to zero.