Bidirectional conduction chip, circuit system, and electronic device

A bidirectional conduction chip, wherein the bidirectional conduction chip is integrated with the following:

• a MOS switching transistor, wherein a first terminal of the MOS switching transistor is connected to a first input pin of the bidirectional conduction chip, a second terminal of the MOS switching transistor is connected to a second input pin of the bidirectional conduction chip, and the MOS switching transistor controls an on/off state of the MOS switching transistor based on a first current or a second current at a gate of the MOS switching transistor;
• a first transconductance operational amplifier and a first voltage source, wherein an output terminal of the first transconductance operational amplifier is connected to the gate of the MOS switching transistor and outputs the first current, an inverting input pin of the first transconductance operational amplifier is connected to the first input pin, a non-inverting input pin of the first transconductance operational amplifier is connected to a positive electrode of the first voltage source, and a negative electrode of the first voltage source is connected to the second input pin;
• a second transconductance operational amplifier and a second voltage source, wherein an output terminal of the second transconductance operational amplifier is also connected to the gate of the MOS switching transistor and outputs the second current, a non-inverting input pin of the second transconductance operational amplifier is connected to a positive electrode of the second voltage source, a negative electrode of the second voltage source is connected to the first input pin, an inverting input pin of the second transconductance operational amplifier is connected to the second input pin, and an output voltage of the second voltage source and an output voltage of the first voltage source are the same and both are used to represent a preset stable voltage between the first input pin and the second input pin;
• and
• an enabling unit, wherein the enabling unit is configured to:
• when a first voltage at the first input pin is greater than a second voltage at the second input pin, output a first enable signal to enable the first transconductance operational amplifier, and output a second enable signal to disable the second transconductance operational amplifier;
• and
• when the first voltage is less than the second voltage, output a second enable signal to enable the second transconductance operational amplifier, and output a first enable signal to disable the first transconductance operational amplifier.