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 cost and size, to improve the reliability of the system. The CS is connected to non-inverting inputs of the current sense comparator. Once the output of comparator goes high, the GATE output goes low. In addition, BP overheating regulatory function, reduce overheating when the power supply output current drive to improve the reliability of the system. The comparator is constantly comparing the CS voltage to the internal mV. Customers can easily avail this LED driver from us at nominal rates. The LED current is decided by the internal constant current control, which is given by:
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BP3108 LED Driver
BP is a single-stage, high-precision with active power factor correction PSR LED constant current control chip, with dimming control function for the full range of 85VacVac input voltage isolated flyback or buck Non-isolated LED constant current power supply. The chip goes back to normal operation automatically after the abnormal situation is removed. Our LED driver is designed with set standards with the help of skilled professionals using high-end technology and quality-proven components.
Please enter your lex. Due to the critical work in the inductor current continuous mode, power MOS at zero current turn state, the switching losses can be reduced, while the utilization of the transformer is higher. For the parameters without minimum and maximum value in the EC table, the typical value defines the operation range, the accuracy is not guaranteed by spec.
Compare Quotations and seal the deal. 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. Another 19V clamp circuitry is offered to prevent the chip from damage on abnormal situation.
In addition, BP overheating regulatory function, reduce overheating when the power supply output current drive to improve the reliability of the system. Get a Best Deal. Once the output of comparator goes high, the GATE output goes low. The FB upper resistor is also used to adjust the Vcs threshold to compensation the input voltage change. Power supply Signal and Power ground The voltage feedback from auxiliary winding.
All the protection functions are auto-recovery. BP integrates the triac dimming control circuit internally. BP ped protection features built-in to enhance system reliability, include open LED protection, LED short circuit protection, chip supply over voltage protection, under voltage protection, current sampling resistor open circuit protection and by-cycle current limit and so on.
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. 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 cost and size, to improve the reliability of the system.
LED Driver – BP Integrated Circuits Distributor / Channel Partner from Mumbai
The patented control method dramatically saves the system cost and size by eliminating all secondary feedback circuitry and loop control compensation circuitry. The output current is reduced when the controller is over temperature. BP integrated active power factor correction circuit can achieve high power factor and low total harmonic distortion.
Supply Voltage 5 V. The maximum operating frequency should be lower than 80KHz, while the minimum system frequency should be higher than 20KHz. Our offered LED drivers are obtainable from us in numerous stipulations as per the need of customers.
Furthermore, our offered LED driver is checked from our side before delivered it in the market. Hp3108 electrical characteristics table defines the operation range of the device, the electrical characteristics is assured on DC and AC voltage by test program.
The LED current is decided by the internal constant current control, which is given by: As well, a series of quality bp318 is performed on these LED drivers to make a fault free delivery from our end. Welding DS EN It is given by: All protection have automatic restart function.
The inverting terminal of comparator is tied to an internal mV reference. The hp3108 is constantly comparing the CS voltage to the internal mV. Connect 1uF capacitor to GND while triac dimming.