Driver power supply manufacturer - switching constant current source

High voltage is converted into low voltage through a transformer, and the DC output is stabilized at low voltage through rectification and filtering. The switching constant current source is divided into social isolation working power supply and non-isolated power supply. Isolation refers to the isolation of high and low voltage output, which is safe, so the insulation requirements of the shell are not high. The safety of non-isolation is slightly worse, but the cost management is relatively low. Traditional energy-saving lamps use non-isolated power supplies and use plastic shells for isolation protection.

The switching power supply has relatively high safety (generally low voltage output) and stable performance. The disadvantage is that the circuit is complicated and expensive. The switching power supply technology is mature and the performance is stable. It is the mainstream LED lighting power supply at present.

Driver power supply manufacturer - coil power supply

Using one or more ICs for working voltage distribution, there are few different types of electronic information components, high power factor, high efficiency of power supply system, no need for electrolytic capacitors, long life and low cost. The disadvantage is that the output high voltage is not isolated, there is a stroboscopic phenomenon, and the shell needs to be protected from electric shock.

The market claims that the capacitor is not (disassembled) and the life is too long, and they are all powered by linear ICs. Integrated circuit driver power supply has become an ideal choice for future LED driver power supply with its high reliability, high efficiency and low cost.

Coil power supply

Using one or more ICs for working voltage distribution, there are few different types of electronic information components, high power factor, high efficiency of power supply system, no need for electrolytic capacitors, long life and low cost. The disadvantage is that the output high voltage is not isolated, there is a stroboscopic phenomenon, and the shell needs to be protected from electric shock.

The market claims that the capacitor is not (disassembled) and the life is too long, and they are all powered by linear IC. Integrated circuit driver power supply has become an ideal choice for future LED driver power supply with its high reliability, high efficiency and low cost.

Driving power supply manufacturer - the difference between LED switching control power supply and driving power supply

Generally speaking, LED driver is also a kind of switching power supply, but because it has some special features of its own and it is also through the versatility of switching power supply, so we are accustomed to classifying it as LED driver.

These features include:

Its output operating voltage is 3.2V, that is, it outputs a voltage of 3.2V, 6.4V, 9.6V, 12.8V, but cannot exceed 25.6V. Because exceeding this number, when the LED is turned on, there is a possibility that a conductive tube will burn out instantly due to poor product consistency. And the voltage is not constant, but changes with the change of load in order to achieve the goal of constant current.

Its output current is constant. The ideal circuit is constant regardless of the LED characteristic curve and how it develops and changes. However, due to the limitation of component precision, there will be small changes, and this change is also an important parameter for judging the performance of the driver circuit. The conduction of LED has a nonlinear "three-level" relationship with voltage, so it is very important to maintain a constant current. It starts with a soft start. Since light-emitting diodes have poor uniformity and the activity of the pn junction changes instantly when turned on, light-emitting diodes are usually driven with a soft start to avoid this shortcoming. The circuit requirements are extremely simple, because in many different cases, the required circuit is installed in a very small space in the design to match the convenience of LED lighting, so our circuit should be as simple as possible, which can also save time costs and reduce corporate energy consumption.