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Optocoupler is a device that separates input and output circuits through optical isolation. It consists of a light-emitting diode (LED) and a phototransistor (Phototransistor); It has unidirectional signal transmission, thus achieving electrical isolation between the input and output ends, that is, the output signal has no impact on the input end, has strong anti-interference ability, stable working characteristics, high reliability, and high transmission efficiency. It is usually used in switch mode power supply control circuits. The typical application principle of optocouplers in switching power supplies is to sample from the output end, obtain error signals, and then convert and isolate the signals to the PWM controller of the input IC. By adjusting the PWM duty cycle, high-precision stable voltage output is achieved.In switch mode power supplies, optocouplers mainly include the following functions:1. Electrical isolation: Switching power supplies typically require the isolatio...
2023
At present, in addition to using external charging stations for charging, the most common charging methods for new energy vehicles are on-board chargers and household charging stations, both of which belong to slow charging. There is a clear difference between on-board chargers and household charging stations.Car charger refers to a charging device that can be carried in the car and can usually be charged using a regular household socket; The household charging station is fixed inside the residential area and needs to be installed and connected to the power grid before it can be used.The main difference between on-board chargers for new energy vehicles and household charging stations is:1. The usage scenarios are different. Car chargers are suitable for temporarily recharging during travel, while home charging stations are designed for convenient charging at home;2. The charging speed varies. Generally, household charging stations charge faster than on-board chargers;3. The installati...
2020
Overview DK1203 is a flyback secondary side switching power supply control chip. AC-DC switching power supply dedicated to high-performance and simplified peripheral components. This chip provides extremely comprehensive and high-performance intelligent protection functions, including output short circuit, secondary open circuit, over temperature, over voltage, and other functions. The hybrid technology of Burst mode, Dynamic PFM, and Hi mode pulse power regulation modes has achieved ultra-low standby power consumption and optimal efficiency across the entire voltage range. The chip is equipped with a high-voltage power transistor and a self powered circuit, with very few peripheral components and a simple transformer design (the transformer for isolating the output circuit only requires two windings).Circuit structure block diagramMain features of DK1203●Full voltage input 85V-265V●Built in 700V high-voltage power transistor●Internally integrated with a high-voltage constant current...
2022
MSP430F135IPMR is manufactured by TI.Features for the MSP430F135IPMR●Low Supply Voltage Range, 1.8 V to 3.6 V●Ultra-Low Power Consumption:○Active Mode: 280 µA at 1 MHz, 2.2 V○Standby Mode: 1.6 µA○Off Mode (RAM Retention): 0.1 µA●Five Power-Saving Modes●Wakeup From Standby Mode in Less Than 6 µs●16-Bit RISC Architecture, 125-ns Instruction Cycle Time●12-Bit Analog-to-Digital Converter (ADC) With Internal Reference, Sample-and-Hold, and Autoscan Feature●16-Bit Timer_B With Seven Capture/Compare-With-Shadow Registers●16-Bit Timer_A With Three Capture/Compare Registers●On-Chip Comparator●Serial Onboard Programming, No External Programming Voltage Needed, Programmable Code Protection by Security FuseSerial Communication Interface (USART), Functions as Asynchronous UART or Synchronous SPI Interface○Two USARTs (USART0, USART1) On MSP430F14x and MSP430F14x1 Devices○One USART (USART0) On MSP430F13x Devices●Family Members (Also See Device Comparison)○MSP430F133●8KB + 256...
2021
We could save up to 20% of energy or 17 million tons of CO2 if only half of all industrial drives had an electric speed control. The 7th generation of TRENCHSTOP™ IGBTs is especial designed for variable speed drives. Based on the micro-pattern trench technology, which offer a high level of controllability. These features bring significant loss reduction in the application, especially for industrial drives, which usually operate at moderate switching frequency.Every switch needs a driver and the right driver makes a difference. To make the most out of the design with TRENCHSTOP™ IGBT7, we recommend using gate driver ICs that meet the IGBT7 as well as the industrial drives’ requirements.IGBT7 in industrial drives requires high output current gate drivers that need to have reinforced isolation (VDE 0884-11 certified). Infineon’s EiceDRIVER™ isolated gate drivers within the X3 Compact, 2L-SRC, and X3 Enhanced families meet these requirements while prov...