How to judge the quality of a power management chip? Working principle and application

The voltage required for the normal operation of chips and components in electrical control systems is different. Power management chip is a type of chip responsible for power conversion, distribution, inspection, and other power management in electronic product systems. Mainly engaged in converting source voltage and current into load power supplies such as microcontrollers and sensors; Identify the power amplitude of the CPU, generate corresponding short moment waves, and promote the power output of subsequent circuits. Managing these battery ICs, voltage regulating ICs are also the fastest growing and largest part of production.

The simplest and most intuitive way to determine the advantages and disadvantages of a power management chip is to measure the input and output voltage values.

1. Set the multimeter action switch to the AC current position (manual 500V or 750V position) to ensure that the input voltage is normal;

2. Then adjust the multimeter action switch to the DC voltage range (manual range is adjusted to be higher than the marked voltage unit), and measure the output voltage to be consistent with the marked voltage.

The working principle and application of power management chip

The power management chip is suitable for the VRM9.0 specification, with a voltage export range of 1.1V-1.85V and a spacing adjustment of 0.025V. The switching frequency can reach 80kHz, and it has the characteristics of large power supply, small ripple, and small internal resistance, which can accurately adjust the CPU power supply voltage. All electronic products have power supplies, but different systems have different requirements for power supplies. In order to fully utilize the best performance of electronic systems, the most ideal battery management method should be chosen.

Firstly, the core of electronic devices is semiconductor chips. In order to improve power density, the feature size of the chip is always decreasing. If the power current is still the original 5V, then the field strength is sufficient to penetrate the chip. Therefore, the demand for power supply current in electronic systems has changed, requiring different buck power sources. In order to maintain efficiency while reducing voltage, a step-down switching power supply is usually used.

At the same time, many electronic systems are also above the power supply voltage, such as battery powered devices, driving LCD backlight power supplies, ordinary white LED drivers, etc., which require the use of variable voltage switch power supplies.

The power management chip is the core of managing the power supply of electronic products, responsible for the conversion, distribution, and detection of the electrical energy required by electronic products. Once ineffective, electronic products will stop running or even be damaged. It is widely used in communication equipment, consumer electronics, industrial control, automotive electronics, medical equipment and other applications. Communication equipment including mobile phones and consumer electronics are large terminal markets of current power management chips.

If you have any purchasing needs for electronic components, please feel free to contact Chengyexing

Shenzhen electronic component IC chip supplier, one-stop BOM distribution company, with over 5000 stock in stock and millions of original factory part number data

Can provide integrated circuit IC chips, memory IC chips, analog signal switches, interface IC chips, clock driver IC, audio amplifier IC, optoelectronic couplers, etc

Various electronic components (resistors, capacitors, inductors, switch connectors)

Spot materials are shipped on the same day, and the BOM quotation can be completed in one day. Service hotline: 134-3440-1267, 155-2178-1275