This article introduces the basic characteristics of digital power, the advantages of digital power compared to analog power and the main content of digital power management, and also introduces the application of digital power management technology. A new generation of integrated circuits requires a supply voltage of 3.3V, 1.8V or less. A single device requires multiple voltages, and the current is very demanding. The voltage must also be applied to the device at the correct timing. The voltages that power these devices must be generated on the board (preferably close to these devices) to minimize voltage drop and voltage stability. The high performance DC/DC converter is suitable for a wide range of inputs, either as an isolated power supply or as a non-isolated point-of-load converter. Therefore, most onboard power systems have adopted DC/DC converter modules as the power supply body. However, without a power management circuit, a complete, robust power system cannot be built. Power management includes: power system monitoring, sequencing and tracking, monitoring and fail-safe. The power management device handles common mode rejection, start limit, start and stop control, and even power factor correction at the input. The power management device configured at the output controls the startup sequencing and output voltage regulation, and provides corresponding failure protection for over-voltage and over-current conditions. The power management device is protected in an isolated AC/DC power supply system. All relevant functional circuits are required to be isolated from the main circuit. Figure 1 shows the main application of the power management device in an isolated AC/DC converter. Dedicated digital power management devices offer significant advantages in cost, development cycle, and reliability over commonly used analog circuits or microcontrollers, programmable logic devices, and more. A new generation of digital power management devices integrates a fast ADC that meets real-time monitoring requirements, enabling it to reflect failures faster than off-chip ADCs of general-purpose microcontrollers. The monitoring data is transmitted to the main controller of the power supply through the I2C or PMBus bus for precise voltage regulation and fault protection. An internal clock enables fault logging. For the multi-output power system, the digital power main controller reads the monitoring data of each output from the management device of each output through the bus interface in real time, and realizes the comprehensive monitoring of the power system. Once the software is designed, the same source files and configuration files can be used for All Products in the design, performance is consistent across units, and analog circuits can vary in performance due to differences in components themselves. Traditionally, relying on analog circuits for power management, power system management circuits that set various parameters through amplifiers, comparators, and RC time delays are no longer superior to digital power management devices. As the design progresses, the components no longer change as the parameters change, and the board no longer needs to be reworked repeatedly. A dedicated digital power management device allows configuration parameters to be set by the configuration software. Changes during design can be easily implemented in software without hardware changes. The configuration software only requires the designer to adjust a small number of parameters. When all the parameters are set, they can be downloaded to the digital power management device through the I2C port using the programming download line. Figure 2 is a block diagram of the internal functional units of a typical power management device. Figure 2 Internal functional unit block diagram of the power management device In addition to the special power management IC application in the monitoring of the power system, the new generation of integrated circuits also increase the power consumption and part of the power management functions in its own design, providing digital power and digital power management. The communication interface of the device. This has been reflected in the higher-end digital processors. Through the communication between the digital processor and the DC/DC converter and the digital power management unit, the processor can automatically adjust the required power supply voltage according to its current processing speed and task strength. The digital power and power management unit contains a number of registers. When the voltage required by the processor changes, the new register is accepted by the bus to configure the relevant registers, or the relevant settings are found in the lookup table of the internal program of the digital power supply. Such a solution is becoming a mainstream application in areas where power consumption is critical. For a processor with separate internal power supply, the functional unit that is in standby or sleep state can be completely powered off, which will further reduce power consumption, but puts higher requirements on power supply management, not only the output port is increased, The setup and monitoring of different ports will significantly increase the complexity of the program within the digital power management unit. A hardware performance monitor inside the processor provides the lowest supply voltage for a specific time. The information of the monitor is directly from the inside of the processor, so the closed loop of the monitoring system is completely inside the processor chip, and the SOC design of the power management is realized. Replacement Bulb Lamp With Housing Replacement Projector Lamp with housing has one more case than the bare bulb lamp, which can be directly put into the projector and more convenient than the installation of the bare bulblamp. The projection effect is the same as the compatible projector lamp, with stable light source and brightness, which can support daily life use Replacement Bulb Lamp With Housing,Bulb Lamp,Dynamic Projector Lamp,Led Projector Lamp Shenzhen Happybate Trading Co.,LTD , https://www.happybateprojectors.com
