What are the common power management IC chips

The development of science and technology also drives the development of power supply, so more power management chips are needed. When it comes to power management chips, engineers are most familiar with one of the common chips. The so-called power management chip is a chip that takes on the responsibility of power transformation, distribution, detection and other power management in the electronic equipment system.

It is mainly responsible for identifying the power supply amplitude of CPU, generating the corresponding short moment wave, and promoting the power output of the later stage circuit. Common power management chips include hip6301, is6537, rt9237, adp3168, ka7500, TL494, etc.

Basic types

Some of the main power management chips are dual in-line chips, while others are surface mount packages. Hip630x series chips are relatively classic power management chips designed by INTERSIL, a famous chip design company.

It supports two / three / four phase power supply, supports vrm9.0 specification, voltage output range is 1.1v-1.85v, can adjust output for 0.025v interval, switch frequency is as high as 80kHz, has the characteristics of large power supply, small ripple, small internal resistance, and can precisely adjust CPU power supply voltage.

What are the common power management IC chips

Common power management IC chips

In daily life, people rely more and more on electronic equipment. The upgrading of electronic technology also means that people have high expectations for the development of power technology. Here is the main classification of power management technology.

Power management semiconductor emphasizes the position and function of power management IC (power management IC) from the perspective of the devices it contains. Power management semiconductor includes two parts: power management integrated circuit and power management split semiconductor device.

In daily life, people rely more and more on electronic equipment. The upgrading of electronic technology also means that people have high expectations for the development of power technology. Here is the main classification of power management technology.

Power management semiconductor emphasizes the position and function of power management IC (power management IC) from the perspective of the devices it contains. Power management semiconductor includes two parts: power management integrated circuit and power management split semiconductor device.

There are many kinds of power management integrated circuits, which are roughly divided into voltage regulation and interface circuits. The voltage regulator consists of a linear low dropout regulator (LDO), a series of positive and negative output circuits, and a switch type circuit without PWM.

With the development of technology, the physical size of the digital circuit in the IC chip is getting smaller and smaller, so the working power supply is developing to low voltage, and a series of new voltage regulators emerge.

The interface circuit for power management mainly includes interface driver, motor driver, power field effect transistor (MOSFET) driver, high voltage / high current display driver and so on.

Power management vertical semiconductor devices include some traditional power semiconductor devices, which can be divided into two categories: one is rectifier and thyristor; the other is triode type, which includes power bipolar transistor, MOSFET and IGBT with MOS structure.

To some extent, because of the development of power management IC, power semiconductor is called power management semiconductor.

It is precisely because so many integrated circuits (ICS) have entered the field of power supply that people call the current power supply technology more by power management.

The main part of the power management semiconductor is the power management IC, which can be roughly summarized into the following 8 kinds.

3. Power factor control PFC pre modulation IC provides power input circuit with power factor correction function;

4. Pulse modulation or pulse amplitude modulation PWM / PFM control IC is a pulse frequency modulation and / or pulse width modulation controller, which is used to drive external switches;

5. Linear modulation IC (such as LDO), including forward and negative regulators, and LDO modulator;

6. Battery charging and management IC. Including battery charging, protection and power display IC, as well as "intelligent" battery IC for battery data communication;

7. Hot plug board control IC (to avoid the influence of inserting or removing another interface from the working system);

8. Switch function IC of MOSFET or IGBT.

Among these power management ICs, voltage regulation IC is the fastest growing part with the largest output. Various power management ICs are basically related to some related applications, so more types of devices can be listed for different applications.

The technology trend of power management is high efficiency, low power consumption and intelligence.

Improving efficiency involves two different aspects: on the one hand, we want to keep the comprehensive efficiency of energy conversion, and on the other hand, we want to reduce the size of equipment; on the other hand, we want to keep the size of protection unchanged, so as to greatly improve efficiency.

Selection factors

The scope of power management is quite wide, including not only separate power transformation (mainly DC to DC, i.e. DC / DC), separate power distribution and detection, but also the system combining power transformation and power management.

Accordingly, the classification of power management chip also includes these aspects, such as linear power chip, voltage reference chip, switching power chip, LCD driver chip, LED driver chip, voltage detection chip, battery charging management chip, etc.

Here is a brief introduction to the main types and applications of power management chips.

If the designed circuit requires high noise and ripple suppression of the power supply, it is required to occupy a small area of PCB