US 12,471,194 B2
Driving control circuit of power transistor, lighting control circuit and lighting circuit
Minghao Wu, Hangzhou (CN); and Guoqiang Liu, Hangzhou (CN)
Assigned to Joulwatt Technology Co., Ltd., Hangzhou (CN)
Filed by Joulwatt Technology Co., Ltd., Hangzhou (CN)
Filed on Mar. 4, 2024, as Appl. No. 18/594,388.
Claims priority of application No. 202310264976.9 (CN), filed on Mar. 13, 2023.
Prior Publication US 2024/0314906 A1, Sep. 19, 2024
Int. Cl. H05B 45/345 (2020.01); H05B 45/37 (2020.01)
CPC H05B 45/345 (2020.01) [H05B 45/37 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A driving control circuit of a power transistor, comprising:
a protocol conversion circuit that stores received input data signal as multi-channel digital signals and converts the multi-channel digital signals into a plurality of regulation parameters;
a driving regulation circuit that is coupled to the protocol conversion circuit and a control terminal of the power transistor, and that adjusts a driving current according to a driving current regulation parameter in a plurality of regulation parameters, and/or adjusts a driving voltage of the power transistor according to a driving voltage regulation parameter in the plurality of regulation parameters, so as to match various types of power transistors, wherein the driving regulation circuit comprises: a voltage regulator that is coupled to the protocol conversion circuit, a power supply terminal and the control terminal of the power transistor, and that converts an input voltage at the power supply terminal into a supply voltage to be supplied to a post stage, and supplying a driving voltage to the power transistor via an output terminal; a pull-up current source that is coupled between an output of the voltage regulator and the control terminal of the power transistor; and a pull-down current source that is coupled between the control terminal of the power transistor and a ground terminal, the pull-up current source and the pull-down current source together providing a driving current to the power transistor.