金興 一種原邊電流取樣以實現過載保護的LED驅動電源——2020神燈獎申報技術

項目名稱：  金興 一種原邊電流取樣以實現過載保護的LED驅動電源

Tauras An LED Driver for Overload Protection by Sampling Primary Current

申報單位：  珠海市金興科技有限公司

綜合介紹或申報理由：

一種原邊電流取樣以實現過載保護的LED驅動電源，包括連接外部電源的原邊驅動模塊、與原邊驅動模塊配合產生輸出電流的副邊驅動模塊以及主控模塊：還包括過載檢測電路，過載檢測電路與原邊驅動模塊電性連接以根據原邊電流的大小控制原邊驅動模塊運作，本設計對原邊側的原邊電流進行檢測，原邊側的原邊電流較小，配合檢測電路損耗較小，過載保護精準并且電路簡單。

An LED driving power supply for overload protection by sampling the primary current includes the primary driving module connecting the external power supply, the secondary driving module cooperating with the primary driving module to generate the output current, and the main control module. The overload detection circuit is also included. The overload detection circuit is electrically connected with the primary driving module to control the operation of the primary driving module according to the size of the primary current. The design detects the primary current of the original side. The primary current of the original side is small, the loss of the detection circuit is small, the overload protection is precise and the circuit is simple.

主要技術參數：

一種原邊電流取樣以實現過載保護的LED驅動電源，包括連接外部電源的原邊驅動模塊、與原邊驅動模塊配合產生輸出電流的副邊驅動模塊以及主控模塊；還包括過載檢測電路，過載檢測電路與原邊驅動模塊電性連接以檢測原邊驅動模塊的原邊電流，主控模塊與原邊驅動模塊電性連接以根據原邊電流的大小控制原邊驅動模塊運作。

所述原邊驅動模塊包括第一開關管、第二開關管、電容ECI、電容EC2、原邊線圈，第一開關管包括控制端、輸入端和輸出端，第二開關管包括控制端、輸入端和輸出端；

An LED driving power supply for overload protection by sampling the primary current includes the primary drive module connected with the external power supply, the secondary drive module and the main control module which cooperate with the primary drive module to generate the output current, and the overload detection circuit, which is electrically connected with the primary drive module to detect the primary current of the primary drive module, the main control module and the primary drive module. The drive module is electrically connected to control the operation of the primary drive module according to the size of the primary current.

The primary driving module includes the first switch, the second switch, the capacitor ECI, the capacitor EC2 and the primary coil. The first switch includes the control end, the input end and the output end, and the second switch includes the control end, the input end and the output end.

技術及工藝創(chuàng)新要點：

過載檢測電路與原邊驅動模塊連接以檢測原邊側的原邊電流，并且通過比較將信號發(fā)送到主控模塊，主控模塊根據原邊電流的大小調制相應的PWM信號控制原邊驅動模塊運作，本設計對原邊側的原邊電流進行檢測，原邊側的原邊電流較小，配合檢測電路損耗較小，過載保護精準并且電路簡單。

在過載檢測電路中，增加峰值保持模塊，從而使取得的電壓值在高、低壓輸入時非常接近且相當平穩(wěn)，使得更加檢測結果更加精準。

The overload detection circuit is connected with the original side drive module to detect the original side current, and the signal is sent to the main control module through comparison. The main control module modulates the corresponding PWM signal according to the size of the original side current to control the operation of the original side drive module. This design detects the original side current of the original side. The original side current of the original side is small, and the loss of the cooperation detection circuit is small. The load protection is precise and the circuit is simple.

In the overload detection circuit, the peak holding module is added, so that the voltage value obtained is very close and quite stable at high and low voltage input, which makes the detection result more accurate.

實際運用案例和用戶評價意見：

本實用新型涉及LED驅動電源，特別是對稱半橋的LED驅動電源。The utility model relates to an LED driving power supply, in particular to a symmetrical half-bridge LED driving power supply.

獲獎、專利情況：

實用新型專利號：ZL 2018 2 0338913.8

Patent No. ZL 2018 2 0338913.8

申報單位介紹：

珠海金興科技有限公司，成立于1998年，現有500多名經驗豐富，勇于奉獻的生產員工。金興，專注于LED開關電源的研發(fā)和生產，完善的產品線包括但不限于防水系列，防雨系列和室內商照電源系列。

公司獲得了ISO9001:2008質量管理體系標準認證，并經TUV 和SGS審廠通過。產品取得了CE、CCC、GS、TUV、UL、CUL、EMC、SAA、IP67、IP68、RoHS 等多項認證。

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