Signal transmission circuit
Patent Information
- Application Number
- TW115206246
- Authority / Receiving Office
- TW · TW
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-07-03
- Publication Date
- 2026-10-21
- Estimated Expiration
- 2036-07-02
Smart Images
Figure TWG2TB001917816_001 
Figure TWG2TB001917816_002 
Figure TWG2TB001917816_003
Abstract
Claims
1. A signal transmission circuit suitable for a power conversion circuit, the signal transmission circuit comprising: a signal generator disposed on a low-voltage side for generating a drive signal; a signal isolation controller coupled to the signal generator for receiving the drive signal and generating a high-voltage side signal accordingly; and a first gate driver disposed on a high-voltage side, coupled to the signal isolation controller and a first power circuit disposed on the high-voltage side, for receiving the high-voltage side signal and generating a first output signal to drive the first power circuit; wherein the first gate driver and the signal isolation controller are two independent components.
2. The signal transmission circuit as described in claim 1, wherein the signal generator is a digital signal processor or a microcontroller.
3. The signal transmission circuit as described in claim 1, wherein the signal isolation controller includes an optocoupler, a capacitor, or a transformer.
4. The signal transmission circuit as claimed in claim 1, wherein the drive signal is a first drive signal, the high-voltage side signal is a first high-voltage side signal, the signal generator is adapted to generate the first drive signal and a second drive signal according to a clock signal, and the signal isolation controller is adapted to receive the second drive signal to generate a second high-voltage side signal.
5. The signal transmission circuit as described in claim 4, further comprising: A second gate driver is located on the high-voltage side, coupled to the signal isolation controller and a second power circuit located on the high-voltage side, and receives the second high-voltage side signal to generate a second output signal to drive the second power circuit; wherein the second gate driver and the signal isolation controller are two independent components.
6. The signal transmission circuit as described in claim 1, further comprising: A third gate driver is located on the low-voltage side, coupled to the signal generator and a third power circuit located on the low-voltage side, and receives the drive signal to generate a third output signal to drive the third power circuit; wherein the third gate driver and the signal isolation controller are two independent components.
7. The signal transmission circuit as described in claim 1, wherein the signal transmission circuit is a closed-loop circuit, and the signal generator adjusts the pulse width of the drive signal according to the feedback signal from the signal transmission circuit.
8. The signal transmission circuit as described in claim 7, wherein the signal generator further performs overvoltage or overcurrent protection based on the feedback signal from the signal transmission circuit.
9. The signal transmission circuit as described in claim 8, wherein the signal generator further selectively stops outputting the drive signal based on the feedback signal from the signal transmission circuit.
10. The signal transmission circuit as claimed in claim 1, wherein the drive signal generated by the signal generator has a fixed pulse width.
11. The signal transmission circuit as claimed in claim 1, wherein the first power circuit includes a gallium nitride transistor element or a silicon carbide transistor element.
12. The signal transmission circuit as claimed in claim 1, wherein the low-voltage side is a second side of the power conversion circuit and the high-voltage side is a first side of the power conversion circuit.