In LED lighting, the trend of replacing traditional fluorescent lamps with LED fluorescent lamps is becoming increasingly clear. Compared with traditional fluorescent lamps, LED fluorescent lamps can save at least 30% of electricity, and the lifespan is 5-8 times that of traditional fluorescent lamps. At present, the design limitations of fluorescent lamps are mainly in the aspects of heat dissipation design and power supply design. The heat dissipation design has evolved from the original full PC tube to the current semi-PC semi-aluminum tube structure. Each heat dissipation design has its own advantages. At present, the whole industry pays attention to heat dissipation and heat dissipation design is much more mature than it was a year ago; It is a new generation of energy-saving products, so from the beginning of product definition, it puts high demands on the power supply, mainly in high performance, long life, small volume, low temperature rise, high reliability and so on.
This article refers to the address: http://
The FT880 is a new generation of products newly developed for the existing LED fluorescent lamps on the market. It has the following features:
1) FT880 is manufactured by 500V high-voltage process, which makes the circuit have dynamic self-power supply, feedback zero current power supply, 2ms ultra-fast start, etc. The long-term working circuit is more reliable;
2) The circuit can be configured as a circuit topology such as Buck, Buck-Boost, and Boost to facilitate different LED application requirements.
3) FT880 has PWMPFM working mode, which enables the circuit to apply the patented “full voltage constant current technology†and can be flexibly configured to different operating modes to meet different topologies and LED configurations;
4) The chip operating frequency is adjustable, and can be configured as a fixed off-time mode, making the circuit application more flexible;
5) Add linear dimming and PWM dimming function for LED applications, you can input dimming signal from the outside, or use FMD's patented LED dimming method;
6) The chip has a 2-level current detection mechanism, which can synchronously detect LED short-circuit anomalies and reliably protect LEDs;
7) The ultra-low operating voltage of the chip 7.5V makes the chip work in a low-power state with a typical value of 1mA, which is effective in peripheral device price and volume.
8) The chip can be configured as an optocoupler feedback type at the same time, which can realize the mass production of the circuit without adjustment, and realize the output open circuit protection at low cost.
As shown in Figure 1, the FT880 typical application scheme uses a high-efficiency low-side Buck topology, using the patented “full-voltage constant-current technology†and “zero-current power supply technologyâ€, and adopts a passive PFC circuit to improve the power factor of the scheme. The output optocoupler realizes open circuit protection and reduces the output voltage withstand voltage. The power range of driving the LED is 6W~30W. The program also has the following main features:
â– Full voltage input range: 90~277VAC, which can be used worldwide
â– Specially designed for the fluorescent tube aluminum tube, the shielding design inside the aluminum tube is a must.
â– Ultra small size design, suitable for T8, T10 fluorescent tube PC tube aluminum tube (10mm high, 13.6mm wide)
â– High efficiency, efficiency reaches 90%
â– Meet the requirements of the Energy Star power factor greater than 0.9
■The overall temperature rise is less than 30 ° C
■Full voltage and current accuracy ± 2%, using patented full voltage constant current technology
â– Meet EN55015B EMI requirements
â– No-load power consumption is less than 0.3W
â– With output overvoltage protection, short circuit protection, overload protection, reverse connection protection
SIP Sockets & Adapters
Antenk high quality, dependable Single In-line Package (SIP) Sockets, Adapters, and Headers are designed with robust screw-machined terminals for superior performance.
SIP Sockets and Adapters Overview
SIP Sockets and Adapters from Antenk are easily customized with a variety of insulator options, including Peel-A-Way Removable Terminal Carriers, molded Solid Strips, and molded Snap Strips that are breakable at .100/(2.54mm) increments to ensure you always have the right size strip on-hand. All models feature our screw-machined terminals with multi-finger contacts for proven reliability and performance.
Replace hand loading operations, define a board-to-board stack height, or provide an easy method to plug and unplug components or boards. Contact us to design the exact SIP socket, SIP adapter, SIP header, or single row connector you need.
Automated assembly compliant.
Tapered entry for ease of insertion.
Wide range of patterns and terminal styles, from 2 to 100 positions.
Solder Preform terminals available for mixed SMT and thru-hole process applications.
Closed bottom sleeve for 100% anti-wicking of solder.
Optional Tape Seal on terminals protects contacts from contamination during board processing.
RoHS compliant insulators and terminals are compatible with lead-free processing - select either Matte Tin or Gold plating.
MACHINED PIN HEADER
ShenZhen Antenk Electronics Co,Ltd , https://www.antenkwire.com