LED drive circuit with high speed and high conversion efficiency for visible light communication
A visible light communication and LED driving technology, applied in the field of visible light communication, can solve the problems of phosphor LED long response time modulation bandwidth, etc., and achieve the effects of strong anti-interference and confidentiality, good application prospects, and reduced system volume
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[0021] The LED driving circuit with high rate and high conversion efficiency for visible light communication of the present invention will be described in detail below in conjunction with embodiments and drawings.
[0022] Such as figure 1 As shown, the LED driving circuit with high rate and high conversion efficiency for visible light communication of the present invention includes a pre-emphasis circuit 1, a control circuit 2, a first MOS tube M1 and a second MOS tube M2, one of the control circuit 2 The power signal input terminal is connected to the DC bias signal input DC, the external power input terminal is connected to the external power supply VDD2, the signal input terminal is connected to the data signal input AC through the pre-emphasis circuit 1, and the power output negative pole of the control circuit 2 passes through the first The resistor R1 is grounded, the power output anode is connected to the gate of the first MOS transistor M1, the source of the first MOS tra...
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