Can transceiver

A CAN transceiver, comprising:

• a data transmission port, configured to receive a data transmission signal;
• a high-side bus port, configured to output a high-side bus signal;
• a low-side bus port, configured to output a low-side bus signal;
• a high-side transistor, having a first terminal, a second terminal, and a third terminal, wherein the first terminal of the high-side transistor is configured to receive a supply voltage, and the second terminal of the high-side transistor is configured to receive the data transmission signal;
• a high-side switching transistor, having a first terminal coupled to the third terminal of the high-side transistor, and a second terminal coupled to the high-side bus port, wherein a voltage at the first terminal of the high-side switching transistor is a high-side detection voltage;
• a low-side transistor, having a first terminal, a second terminal, and a third terminal, wherein the first terminal of the low-side transistor is coupled to a reference ground, and the second terminal of the low-side transistor is configured to receive a data transmission inverted signal;
• a low-side switching transistor, having a first terminal coupled to the low-side bus port, and a second terminal coupled to the third terminal of the low-side transistor, wherein a voltage at the second terminal of the low-side switching transistor is a low-side detection voltage;
• a first regulation circuit, having a first input terminal and a second input terminal, wherein the first input terminal of the first regulation circuit is configured to receive the supply voltage, and the second input terminal of the first regulation circuit is configured to receive the high-side detection voltage, wherein the first regulation circuit generates a first regulation signal according to the supply voltage and the high-side detection voltage;
• a second regulation circuit, having a first input terminal and a second input terminal, wherein the first input terminal of the second regulation circuit is coupled to the reference ground, and the second input terminal of the second regulation circuit is configured to receive the low-side detection voltage, wherein the second regulation circuit generates a second regulation signal according to the reference ground and the low-side detection voltage;
• a first regulation transistor, having a first terminal, a second terminal, and a third terminal, wherein the first terminal of the first regulation transistor is coupled to the second terminal of the low-side switching transistor, the second terminal of the first regulation transistor is coupled to the reference ground, and the third terminal of the first regulation transistor is configured to receive the first regulation signal;
• and
• a second regulation transistor, having a first terminal, a second terminal, and a third terminal, wherein the first terminal of the second regulation transistor is coupled to the supply voltage, the second terminal of the second regulation transistor is coupled to the first terminal of the high-side switching transistor, and the third terminal of the second regulation transistor is configured to receive the second regulation signal;
• wherein when the high-side detection voltage is greater than a sum of the supply voltage and a first threshold, a forward current flowing through the low-side switching transistor increases;
• and when the low-side detection voltage is less than a second threshold, a forward current flowing through the high-side switching transistor increases.