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Low-cost all-round fully compatible drive unit

A compatible drive, all-round technology, applied in lighting devices, lamp circuit layout, light sources, etc., can solve problems such as high cost, large size, and complex compatible lines

Active Publication Date: 2017-02-22
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] There is no published fully compatible fluorescent lamp drive solution in the world, only known compatible ET (electronic transformer) or IT (inductive transformer), and the known compatible circuit is very complicated, high cost, and very large in size

Method used

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  • Low-cost all-round fully compatible drive unit

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Embodiment 1

[0013] see figure 1 , this low-cost all-round fully compatible drive device, including intelligent control unit, current limiting constant current unit, high frequency constant current control IC, voltage monitoring unit, LED light string, resistor R, diode D1, diode D2, diode D3, diode D4, Diode D5, diode D6, diode D7, diode D8, diode D9, inductor L, capacitor C, switch K101, switch K102, switch K103, first input contact A, second input contact B, third input contact C and the fourth input contact D; the switch K101, the LED light string, the inductor L, the switch K103 and the resistor R are connected in series in sequence, wherein the switch K101, the LED light string, and the inductor L are connected in series with the diode D9 in parallel; the anode of the diode D1 is connected to the first The input point A is electrically connected, the cathode is electrically connected to the switch K101; the anode of the diode D2 is electrically connected to the second input point B, ...

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Abstract

The invention discloses a low-cost, all-round and fully compatible driving device. The voltage monitoring unit is used to detect the upper end voltage of the switch K103 and send it to the high-frequency constant current control IC; the high-frequency constant current control IC is based on the voltage value output by the voltage monitoring unit and the detected switch The current value of K103 judges whether to make K103 enter the high-frequency BUCK PWM or enter the current-limiting operation mode; the current-limiting constant-current unit is used to monitor the peak current of the resistor R and enter the current-limiting and constant-current mode through the switch K103; the intelligent control unit: Through the signal provided by the voltage monitoring unit, the current on the resistor R and the current limiting constant current unit, the time sequence control of K101 is realized through the delta time delay method. The invention can be compatible with four types of inductive type, coupled electronic type, common electronic type, and preheating electronic type without damaging the lamp tube or ballast, and fully compatible with the direct input of mains power. compatible.

Description

technical field [0001] The invention relates to an LED driving device in the field of LED fluorescent lamps, in particular to a low-cost, omnidirectional and fully compatible driving device. Background technique [0002] There is no published fully compatible fluorescent lamp drive solution in the world, only a certain type of ET (electronic transformer) or IT (inductive transformer) is known to be compatible, and the known compatible circuits are very complicated, costly, and very large in size. Contents of the invention [0003] The technical problem to be solved by the present invention is to aim at the deficiencies of the above-mentioned prior art, and to provide a kind of inductive type, coupled electronic type, ordinary electronic type, preheating Compatible with four types such as electronic type and fully compatible drive device for direct input of mains power. [0004] In order to solve the above-mentioned technical problems, the technical solution adopted by the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
CPCH05B47/10Y02B20/40
Inventor 陈敦军雷建明张荣郑有炓
Owner NANJING UNIV
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