With the rapid development of electronic products, the requirements for the diversification and improvement of functions of electronic products are getting higher and higher. The application of power management chip technology is to use the power chip to reasonably distribute the power output to different components in the circuit in order to save the overall energy consumption of the power system, and use the management chip to control and reduce the power consumption of the components when they are idle, so as to achieve low power consumption. Purpose.

The principle of the power management chip is to control the chip set in the power supply through programming, so that the power management system can control whether the power supply at all levels is activated through software instructions, that is, through various software instructions to achieve cyclic execution and conditional execution of voltage activation at all levels, Complete the change, distribution, inspection and management of electrical energy within the power system.

The related advantages of the power chip:

1. The more functions and higher performance an electronic device has, the more complex its structure, technology and system will be, and the more difficult it will be for a traditional analog technology power management IC to meet the overall system power management requirements, and the more expensive it will be;

2. The core of the digital controller is mainly composed of three special modules: anti-aliasing filter, analog-to-digital converter (ADC) and digital pulse width modulator (DPWM). In order to achieve the same performance indicators as the analog control architecture, high-resolution, high-speed and linear ADCs and high-resolution, high-speed PWM circuit designs are required;

3. The ADC resolution must be able to satisfy that the error is less than the allowable variation range of the output voltage. The smaller the required output voltage ripple, the higher the resolution requirements of the ADC. At the same time, due to the loop delay introduced by anti-aliasing filters and pipelined or SAR analog-to-digital converters, we urgently need high-sampling rate analog-to-digital converters;

4. Analog controllers have inherent limitations on the possible pulse widths that can be generated, whereas DPWM can generate discrete and finite sets of PWM widths. From a steady state output perspective, only a discrete set of output voltages is possible. Since the DPWM is part of the feedback loop, the resolution of the DPWM must be high enough so that the output does not show the well-known limit cycle value. The minimum number of bits required to not display any limit cycles depends on topology, output voltage, and ADC resolution. At the same time, the loop stability of the system is adjusted by a PI or PID controller.

Application scope of power management chip:

In today‘s society, people‘s lives are inseparable from electronic equipment for a moment. The application range of power management chips is very wide. Power management chips are responsible for the transformation, distribution, detection and other power management of electric energy in electronic equipment systems. The development of power management chips is of great significance to improve the performance of the whole machine. The choice of power management chips is directly related to the system requirements, and the development of digital power management chips still needs to overcome the cost barrier; power management chips are indispensable for electronic systems. The quality of its performance has a direct impact on the performance of the whole machine.

The purpose of the power management chip is to improve efficiency and reduce power consumption in order to meet the requirements of green environmental protection. All electronic devices have power supply, but different systems have different requirements for power supply. In order to exert the best performance of the electronic system, it becomes particularly important to choose the most suitable power management chip.