搜索
1

News

Your location:
Home
-
-
-
Reasons for high self-locking switching frequency

Reasons for high self-locking switching frequency

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2021-07-06
  • Views:0

(Summary description)The self-locking switch is a switching power supply, which uses contemporary power electronic technology to control the time ratio of the switching tube for registering and turning off to maintain a s

Reasons for high self-locking switching frequency

(Summary description)The self-locking switch is a switching power supply, which uses contemporary power electronic technology to control the time ratio of the switching tube for registering and turning off to maintain a s

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2021-07-06
  • Views:0
Information

The self-locking switch is a switching power supply that uses contemporary power electronic technology to control the time ratio of the switching tube for registering and turning off to maintain a stable output voltage. Self-locking switches are usually composed of pulse width modulation (PWM) control ICs and MOSFETs. There are more self-locking switches and linear regulated power supplies, and the cost of both increases with the increase of power, but the speed of the two is different. At a certain power point, the cost of the linear regulated power supply is higher than the self-locking switch, which is called the cost rotation point. With the development and innovation of power electronics technology, self-locking switch technology is also constantly innovating. This cost turning point is gradually shifting to the low output power engineering end, which provides a wide indoor space for the self-locking switch.

The high frequency of the self-locking switch is the direction of its deployment. High frequency makes the self-locking switch miniaturized, and makes the self-locking switch into a wider range of applications, especially in the application of high-tech skills, thereby promoting the miniaturization of high-tech skills and the lightweight of products. The deployment and application of other self-locking switches is of key significance in terms of energy saving, asset saving and natural environment maintenance. The main power engineering electronic devices used in self-locking switches are diodes, IGBTs and MOSFETs. SCR is rarely used in self-locking switching inverter circuits and soft-start power circuits. GTR drivers are difficult, and the switching frequency of the power supply is very low, so they are gradually replaced by IGBTs and MOSFETs.

Three standard extensions

1. Power switch: power engineering electronic equipment works in the power switch state instead of the linear state

2. High frequency: Power engineering electronic equipment works at high frequency instead of low frequency close to DC

3. Direct current: The output of the self-locking switch is direct current, not communication

Classification of self-locking switches:

Everyone's self-locking switch skills are developing and designing related power engineering electronic equipment, and at the same time developing and designing power switch DC frequency conversion technology. The two promote each other to promote the self-locking switch, and its growth rate exceeds double-digit data. , Small size, thin, low noise, high robustness, anti-interference azimuth deployment. Self-locking switches can be divided into two types: AC/DC and DC/DC. DC/DCSPWM has been modularized design, and in countries all over the world, master planning skills and manufacturing skills have been matured and standardized, and have been recognized by customers, but the modular design of AC/DC, due to its own characteristics, Urge to encounter relatively messy skills and technical problems in the process of modular design. The structure and characteristics of the two main types of self-locking switches are explained below.

Self-locking switches produce a lot of interference than linear stabilized power supplies. For common mode interference and smart power consumption devices, the sound of grounding devices and shielding methods should be heard. According to EMC management such as ICE1000, EN61000, FCC, self-locking switches listen to opinions on EMC electromagnetic compatibility test methods, so self-locking switches should usually include EMC electromagnetic compatibility test filters. For example, for the self-locking switch of the HA series products of Huafu Lead Technology, it can meet the grounding surface of the FG terminal or the customer's situation to meet the requirements of electromagnetic compatibility testing.

Maintain the power circuit

Self-locking switches must have maintenance functions in the overall plan, such as overcurrent, overheating and short-circuit faults. Therefore, in the overall planning, a self-locking switch control module with perfect maintenance functions should be selected, and the main parameters of circuit maintenance technology should be mastered, which should be consistent with the working characteristics of electrical machinery and equipment. Damage to power-consuming machinery or self-locking switches.

The deployment position of the self-locking switch is high frequency, high firmness, low power consumption, low noise, anti-interference and modular design. Since the important technology of light, thin, and thin self-locking switch is high frequency, many foreign self-locking switch manufacturers are working on the development and design of new high-intelligence system components, which is very important to improve the secondary loss. Rectifier equipment. , And adding high-tech innovations to the output power ferrite core (Mn? Zn) material to improve the high magnetic effect and large magnetic flux density (Bs) at high frequencies, and miniaturization of power capacitors is also important skill. The application of SMT technology has promoted the long-term development trend of self-locking switches. The components are arranged on both sides of the circuit board to ensure that the self-locking switch is light and small. Red wave self-locking switch is dedicated to self-locking switch and other products. Hope to call for consultation.

The high frequency of the self-locking switch will inevitably innovate the traditional PWM power switch technology. The soft power switch technology of ZVS and ZCS has become the mainstream technology of self-locking switch, and the work of self-locking switch has been greatly improved. high efficiency. Regarding the overall goal of high robustness, the UK's self-locking switch manufacturers have adopted methods of reducing the amount of operating current and lowering the junction temperature to reduce the ground stress of the equipment and promote further improvements in robustness. product.

Modular design is the overall development trend of self-locking switch deployment. Modular power supplies can be used to form a distributed power management system, and the overall plan can be an N+1 redundant power management system, and capacity expansion in series mode can be carried out. Given that the self-locking switch is very noisy, if you are looking for a higher frequency alone, the noise will eventually increase. However, using a part of the series resonance conversion power circuit technology can theoretically increase the frequency and reduce the noise. However, there are still technical problems in the practical application of some series resonance conversion technologies, so a lot of work is still required in this field to make the technology sufficient for commercialization.

Scan the QR code to read on your phone

Relevant information

INQUIRY

Username used for comment:
客户留言
Description:
code
GATERON
这是描述信息

Wechat

这是描述信息

bilibili

这是描述信息

Weibo

© Huizhou GATERON Electronic Technology Co., Ltd.   All rights reserved.       粤ICP备14067115号    Powerby:ww.300.cn