It can achieve excellent constant current performance with very few external components, so the system cost and size are minimized. It can precisely control the LED current without secondary side sense and feedback circuits. A good trade-off is achieved in the internal driver with suitable strength. After the system is powered on, the Vcc capacitor is charged through the start-up resistor, once the Vcc voltage I P? BP is assembled in SOP-8 package.
|Date Added:||5 October 2009|
|File Size:||12.81 Mb|
|Operating Systems:||Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X|
|Price:||Free* [*Free Regsitration Required]|
The CS is connected to non-inverting inputs of the current sense comparator. The BP adopts proprietary primary side current sensing scheme.
Line voltage compensation coefficient can also be flexibly adjusted by external components. Once LED short circuit or LED open circuit is detected, the system enters into low standby mode in which the system consumes very low power and the output status is monitored continuously.
LED Driver flyer BPSemi _百度文库
Welding DS EN Mobile Number Please enter Mobile Number. BP overheating adjust the temperature can be set by external resistors. Tell us what you need by filling in the form.
Please enter your name. The maximum operating frequency should be lower than 80KHz, while the minimum system frequency should be higher than 20KHz. Integrated Circuits Approx Price: The thermal shutdown circuitry senses the lef temperature.
BP3108 LED Driver
All the protection functions are auto-recovery. The inverting terminal of comparator is tied to an internal mV reference. Current sense CS resistor The CS resistor ground should be as close to the chip ground as possible to reduce the ground noise coupled, which improves the quality of the sensing signal.
Please enter Mobile Number. Our offered LED drivers are obtainable from us in numerous stipulations as per the need of customers. The LED current is decided by the internal constant current control, which is les by: The FB upper resistor is also used to adjust the Vcs threshold to compensation the input voltage change. The BPMB utilizes patented line and load voltage compensation method to achieve excellent line and load regulation. BP integrated active power factor correction circuit can achieve high power factor and low total harmonic distortion.
The operation frequency is given by: Superior performance Durable finish standards Robust construction Applications: BP proprietary current sampling mechanism, work on the primary side feedback mode, without secondary feedback circuitry to achieve highly accurate output current control, saving system hp3108 and size, to improve the reliability of the system. All protection have automatic restart function. Once the output of comparator goes high, the GATE output goes low.
Current path area The area of current path should be as small as possible to reduce EMI radiation, such as the primary current loop from the primary inductor to the MOSFET and the secondary current loop from bp31008 secondary inductor to the output rectifier. It can precisely control the LED current without secondary side sense and feedback circuits. During normal operation, The Vcc is supplied via the auxiliary winding.
The output current is reduced when the controller is over temperature. We are here to help! Please enter your Email ID.
BP3108 Datasheet PDF