LED lighting replacement plan

LED lighting to replace halogen lamp, incandescent lamp or fluorescent lamp challenge two alternatives:

1. Meet the requirements of shape size

2. Electrical specification is compatible with the existing architecture

Maxim extremely innovative drive schemes can help designers to meet these demanding requirements, so as to reduce the cost of generation product design, size and complexity. Request

meet the overall size of existing products small shape design not only limits the physical size of alternatives, and restricted the heat/cooling design limited. Size is limited, due to the LED need to through the bulb heat sink dissipation of heat, heat dissipation become a key factor in the design.

is a direct result, as a result of heat consumption problem affecting the working life of the driver board. The higher the luminous intensity, light bulb working temperature is higher ( Often work at + 80 ° C to + 100 ° C) 。 At such temperatures, the drive plate on the work time can't more than thousands of hours of electrolytic capacitor, thus restricting the service life of the bulb.

the service life is the key to the LED lighting alternatives, Maxim for this demand has developed 120 vac / 230 vac and 12 vac input lighting solution. LED driver do not need to install electrolytic capacitor in the circuit board, the light bulb is up to 90000 hours of work time. Due to eliminating the electrolytic capacitor, also to decrease the size of the package, make the driver board can easily into a slot in small size. Electric compatible

LED lighting and upgrading scheme must be able to work properly in the current section Angle adjustable light ( Three-terminal two-way thyristor or trailing edge dimmer) And the structure of the electronic transformer.

the 120 vac / 230 vac power supply of light bulbs are usually made of three-terminal two-way thyristor dimmer, very suitable for this kind of dimmer incandescent and halogen lamps, such as resistive load. Standard LED drive belongs to nonlinear load, however, when the ac input voltage reaches its peak when input bridge rectifier will in a short time to absorb high brightness peak current. At this time will not be able to meet the required by the dimmer open and maintain current, led to the closing of dimmers, flickering light bulbs.

12 vac input light bulb electrical architecture is more complex, the light bulb input may be connected to the transformer and dimmer. And the traditional drive design do not compatible with the transformer and dimmer, leading to the light bulb.

Maxim to provide 120 vac / 230 vac input and 12 vac input LED lighting solution using primary transformation architecture, control current using the patent technology, these drives can be cut Angle of light dimmers adjust brightness and compatible with the transformer design. In addition, we provide solutions to achieve zero. The power factor of 9, only a few external components, can not use the electrolytic capacitor. To provide 120 vac / 230 vac and 12 vac assessment program, easy to mass production. Maxim is the only one able to provide the comprehensive advantages of solution provider.