Everyone now has a smartphone or tablet. They are a must-have tool for sending and receiving business e-mails, picking up personal calls, and keeping up with the times, and there are always trendy games available, Angry Birds, Candy Bursts, and Crosswords. Our smartphones not only support weather forecasts, but they also guide us. All of these features and functions make our lives easier and more efficient. If you are like me, you will also charge your device for a whole night and start a new day with a full battery. However, due to the power consumption of screen size and display brightness, the battery is now rarely maintained for the length of time I need. A convenient way to solve this problem is to charge the phone on the round trip. Car DC/DC chargers are not only popular but also necessary. There are several different types of DC/DC chargers. Many cars have built-in USB ports that can be used to charge these devices. In addition, the accessory market radio and storage radio can also bring this convenience while realizing the music stored in the listening device. Finally, if none of these options are available, you can find a charger in the aftermarket that meets the requirements for an accessory port or cigarette lighter. In general, these designs take the car battery as an input. This means that the input voltage range is 6V to 14V under normal operating conditions, while the transient voltage is 80V or higher. Each port output is typically 5V at currents up to 2.1A. This type of design has three main components: 1. Input adjustment and filtering. Input filtering and conditioning circuitry is typically used to reduce EMI and protect downstream DC/DC converters. Some common converter options are the TPS54240 and TPS40170. Both ICs offer a wide range of inputs and features to simplify the design process for engineers. 2. DC/DC conversion. 3. USB charging and protection. Protection is especially important. Who wants to destroy hundreds of dollars of equipment in a faulty charger? The actual battery and charger for your smartphone or tablet are inside the device. In order to provide maximum charging current for charging, the charger needs to be able to self-recognize. The TPS2511 and TPS254x devices not only help with this identification, but also provide the necessary USB protection. Based on the above ideas, I created two USB DC/DC charger designs that you can use for free: PMP7388 and PMP7390. If you need a single-port charger that is flush with the surface of the cigarette lighter socket, use the PMP7388. Use the TPS54240 and TPS2511 for non-synchronous buck converters with integrated high-side FETs. The TPS54240 can handle input voltages up to 40V. To protect against high surges at the input, an adjustment circuit is used to clamp the input voltage to 39V. The output not only provides 2.1A current, but also provides a “universal charging†function via the TPS2511. If you need a dual port charger, use the PMP7390. The TPS40170 synchronous buck converter with external FET design is used for high efficiency and low heat dissipation. The output not only provides 5V at 5A, but also provides a “universal charge†for each port via the TPS2511. 48V power supply are Anti-jamming performance, and reliable performance.DC ripple is small, high efficiency.Insulation performance,high electrical strength. With short circuit, oVerload, oVerVoltage protection.Full load high temperature burner,100% aging test. Low operating temperature, long serVice life.the input Voltage range is wide, all 100-240V, for the world, the region.the first secondary insulation performance, high-frequency transformer 100% Vacuum impregnation.input AC line: 8 words, the word tail, plum tail (according to customer requirements configuration).the output DC line: 1.2 m / 1.5 m / 1.8 m / (non-conVentional line length to be customized).the output plug: diameter 5.5mm diameter 2.1 or 2.5mm 3.5MM * 1.35MM (all kinds of conVentional size and unconVentional size) 48V Desktop Switching Power Supply Power Supply 48V,48V Power Adapter,48V Dc Power Supply,48V Dc Adapter Shenzhen Juyuanhai Electronic Co., Ltd. , https://www.powersupplycn.com
