New type high-power LED driving power source
A LED drive, high-power technology, applied in the field of constant current controllers and drivers, can solve the problems of no dimming interface and low efficiency, and achieve the effects of prolonging service life, low temperature rise, and improving safety and reliability
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[0016] Structural Reference of the Invention figure 1 , figure 2 , image 3 , which includes a protection filter rectification PFC circuit 1, a half-bridge series resonance circuit 2, a synchronous rectification circuit 3, a current sampling circuit 4, a voltage sampling circuit 5, a non-inverting amplifier circuit 6, a non-inverting adder circuit 7 and a feedback control circuit 8.
[0017] The input end of the protection filter rectification and PFC circuit 1 is connected to an external AC input power supply, the output end is connected to the half-bridge series resonant circuit 2, the output end of the half-bridge series resonant circuit 2 is connected to the synchronous rectification circuit 3, and the output end of the synchronous rectification circuit 3 is connected to the voltage sampling circuit 5 and current sampling circuit 4;
[0018] The current sampling circuit 4 is composed of a current sampling element RS1. The input end of RS1 is connected to the output end ...
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