AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
Usb isolator schematic10/4/2023 Potted with high-quality environmentally friendly waterproof and thermal conductive glue, moisture-proof and vibration-proof, and meets the IP65 standard.Input and output isolation withstand voltage 1500VDC.Low super power consumption, standby power consumption is only 0.025W (input current 5mA).Constant voltage input, isolated unregulated single output, 1W.It is used to isolate the input from the output power of the device. The HLK-1D0505A is a 5V input, 5V output 1W isolation DC/DC converter with small size and high efficiency. Note that the ADuM3160 is hardwired for USB2.0 full speed (12Mbps) support only on this board. High common mode transient immunity: >25kV/μsįor transient voltage protection, TVS diode arrays are added at the input and the output in addition to the typical serial resistors. 8mA maximum upstream supply current at 12Mbps.Compatible with USB 2.0 full speed (12Mbps).The 5kV reinforced insulation version, the ADuM4160, can also be used with this board. The device draws low enough idle current that a suspend state is not required. The ADuM3160 provides isolated control of the pull-up resistor to allow the peripheral to control connection timing. V_BUSx by internally regulating the voltage to the signaling level. It operates with the bus voltage on either side ranging from 4.5 V to 5.5 V, allowing connection directly to The isolator has a propagation delay comparable to that of a standard hub and cable. Data direction is determined on a packet-by-packet basis. Because the USB lines must switch between actively driving D+/D− and allowing external resistors to set the state of the bus, the ADuM3160 provides mechanisms for detecting the direction of data flow and control over the state of the output buffers. This is desirable in many cases because it minimizes external components and simplifies the design however, this presents particular challenges when isolation is required. Many microcontrollers implement USB so that it presents only the D+ and D− lines to external pins. Combining high speed CMOS and monolithic air core transformer technology, this isolation component provides outstanding performance characteristics and is easily integrated with low and full speed USB-compatible peripheral devices. The ADuM3160 is a 2.5kV USB port digital isolator. This 2.5kV USB 2.0 Isolator with 200mA power supply and full speed (12Mbps) support is a simple solution to these problems. Furthermore, measuring devices with a USB connection can deliver incorrect measurement results due to ground loops, or even cause short circuits. Special devices, such as a USB killer, actually serve this purpose. I encourage you to try this simple upgrade, as you won’t be disappointed.Defective USB devices can destroy the USB port or even the motherboard of your PC. The PCB can be easily made using a laser printer and an iron. The PCB artwork in 1:1 scale pdf file and component placement is available for download HERE. I recommend using the build in regulator. JP3 allows you to switch between the power supplies of the second half of the isolator. It is the designer’s choice how to use this functionality. In other applications, it can be connected to a GPIO pin of a controller, a fixed delay circuit can be applied, or it can be connected as shown in this circuit. In this application, the PIN input is jumpered high so that the upstream pull-up is applied as soon as peripheral power is applied. This function is controlled by the PIN input. The ADuM4160 has an option to delay application of the upstream pull-up under control of the peripheral. JP1 switches the speed – open=low speed(1.5Mbps), close=full speed(12Mbps). The circuit is pretty straightforward but here is some explanation.
0 Comments
Read More
Leave a Reply. |