What is the indispensable unit in electronic equipment? The power management unit is responsible for the conversion, distribution, detection and other power management of electrical energy in an electronic device system. It is mainly responsible for converting the source voltage and current into a power source that can be used by loads such as microprocessors and sensors. As the heart of the power supply management of electronic equipment, the power management chip is the unit in the electronic equipment must keep working state. Once the power management chip fails, the electronic equipment will stop working or even be destroyed. Based on this key role, the power management chip must meet the requirements of high stability, high reliability, low power consumption and so on.

With the promotion of the concept of environmental protection, the implementation of various high energy efficiency grade standards, and the increasing popularity of the concept of carbon neutrality from this year, the excellent power management chip has also increased the high energy efficiency and high integration of new requirements, so as to meet the design concept of lower power consumption and smaller size of electronic equipment. As the world leader in power management chips, we discuss how Toshiba can provide power management ics with high reliability, low power consumption and high integration.

The power management IC of Toshiba Semiconductor enables device multifunctionalization and energy saving. In addition to the simple linear voltage regulator IC, switching voltage regulator IC, and multifunctional system power IC, the power management IC also includes the load switch IC, which stops supplying power to the load and controls the power supply sequence during standby.

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Figure 1 Product classification of Toshiba Power management ics

According to the specifications required by the system, the device power supply of common electronic devices is composed of various power management ics. The integrated power management system is composed of power management ics with various functions. See Figure 2 for examples of common power management structures.

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Figure 2 shows an example of power cable structure in the system

Why do I need POL power IC?

The point of load (POL) power supply system features a power supply whose power management module can be mounted directly on the printed circuit board. Since the LSI has low voltage and versatility, it requires a power supply with low voltage tolerance and low noise. At the same time, due to the long circuit board wiring, the voltage drop and power supply noise caused by crosstalk become problems to be solved. For this application, POL (point of load) power ics that can generate and provide voltage near the load end (near the circuit block to be used) have attracted a lot of attention.

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