Constant current LED driver chip with full screen real time silence detection function

Cumulative Technology launched a full screen real-time silent error detection technology (Silent Error Detection) application of a new generation of constant current LED driver chip -MBI5039, in order to meet the high demand for LED display applications. LED display on the market for video playback quality assurance requirements, how does not affect the contents of the display, but also at any time to complete the online error return, will be an essential feature of the LED display. For the functional requirements, accumulation of science and technology driven to achieve full screen real-time chip error detection function, including highlights and scotoma error detection in real time, the MBI5039 LED is not only suitable for traffic display applications, more and more application requirements of commercial LED display customer oriented.

MBI5039 is an advanced error detection function of the 16 channel constant current LED driver, constant current output range can support 3~90mA, pressure up to 17V, and can provide a data transfer rate of up to 30MHz, to meet a large number of data transmission on the LED display system requirements. MBI5039 has the error detection function includes two kinds, one is "the message in error detection function" (In-Message Error Detection); the other is "silent error detection function" (Silent Error Detection). MBI5039 "message in error detection mode", take "data, wrong" (data in, error out) way to do detection and return, can real-time and continuous identification of LED short circuit on the display or open condition, and the return of exact damage location of LED and MBI5039; "silent error detection model only needs to give simple instructions, full screen real-time error detection can be carried out and all the highlights and dark current, the output port can be through a very short period of time (500ns) to test the current minimum (0.1mA) to detect, in order to prevent LED display instantaneous flicker or noise phenomenon, maintain the normal operation of LED display image the display information and ensure the correctness of Ping playing. In addition to the above two kinds of real-time error detection function, the MBI5039 is also built in overheating detection return function, providing the system to take the necessary protective measures. MBI5039 also provides 64 order programmable current gain control, can be used for brightness adjustment, module uniformity adjustment, temperature compensation, etc.. MBI5039 to improve the uniformity of the quality requirements, but also to achieve the accuracy of the channel current variation is less than 1.5%, while the current drive IC between the accuracy of variation is less than + 3%. In addition, MBI5039 also has a fast response time of the output current, the minimum time required for only 35ns, can help the system significantly enhance the LED display grayscale effect and visual update rate.

Through the accumulation of science and technology Share-I-O patent technology, MBI5039 can be fully compatible with the MBI5025/MBI5026/MBI5027/MBI5028/MBI5029, the user can not need to replace the PCB in the situation, can be directly used with advanced error detection function MBI5039. MBI5039 can not only improve the quality of the LED display video playback, without affecting the display content, can complete error detection and real-time online screen bugs, to reduce the maintenance cost, can meet the high standard of LED display applications. For more information and samples, please visit the accumulation of science and technology website www.mblock.com.cn or through Email: marketing@mblock.com.tw contact.

Source: Electronic Engineering album