After the ups and downs of the LED lighting market in 2015, the filament lamp has become the focus of the market. Today, Xiaobian brings you: Jingfeng Mingyuan cost-effective filament lamp thyristor dimming solution.
BP3216 filament lamp thyristor dimming solution solves the problems faced by filament lamp dimming applications?
1. The volume is small, the cost is low. E26/E27 limits the size of the drive circuit, and the filament lamp solution is required to be small in size and low in cost. BP3216 adopts open-loop peak current control, simple control mode, different output specifications, the same circuit structure, only need to change the inductor design and sampling resistor size, it can easily complete the design of different output specifications and reduce the design cost. The chip realizes VCC startup through the bus voltage. The normal VCC power supply is provided by the output voltage, which can realize the transformer single winding structure and the simple VCC power supply line, so that there are few external components. In addition, the BP3216 integrates MOSFETs internally to further reduce the size. Therefore, the BP3216 solution has the advantages of simple structure and few external components, and is especially suitable for the application of filament lamps.
2, EMI is easy to handle small size, but also high efficiency, EMI is easy to handle. BP3216 adopts source drive and DCMB control mode. There is no diode reverse recovery and the switching loss is small. The chip's temperature rise is low, ensuring reliability. At the same time, EMI is also easier to handle.
3, the output voltage is high, the output current small filament lamp load characteristics are: high output voltage, small output current using BUCKBOOST topology, BP3216 series chip internal integration of different withstand voltage MOSFET, can meet the requirements of different power output. 4The heat-dissipating filament lamp has poor heat dissipation. It is required to limit the maximum output current's unique VLN feedforward compensation, which limits the maximum output current, which can greatly improve the life of the filament and improve the reliability of the drive. 5 Meet Energy Star requirements high PF value, meet the requirements of Energy Star preset 10us maximum Ton TIme, peak current control, input current tracking input voltage when the input voltage is low, when the input voltage is high, the current limit operation. It is very convenient to achieve PF value of 0.9. At the same time, after the dimmer is connected, the peak current control can provide enough sustain current to ensure dimming compatibility.
BP3216 application case
Input voltage: 100~132Vac
Output LED: 150V/20mA
BUCKBOOST topology
1, PCB physical map
2, schematic
3, PF and efficiency curve
4, compatible dimmer list
　　 For the thyristor dimming requirements of filament lamps, Jingfeng Mingyuan uses BP3216 to bring you a cost-effective solution, which helps LED lighting to stand out in the booming filament lamp market and win by step by step.
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