搜索
1

News

Your location:
Home
-
-
-
Reasons for the high frequency of self-locking switches

Reasons for the high frequency of self-locking switches

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2021-03-05
  • Views:0

(Summary description)​The self-locking switch is a switching power supply that uses contemporary power electronic technology to manipulate the ratio of the time when the switch tube is applied for registration and shutdow

Reasons for the high frequency of self-locking switches

(Summary description)​The self-locking switch is a switching power supply that uses contemporary power electronic technology to manipulate the ratio of the time when the switch tube is applied for registration and shutdow

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2021-03-05
  • Views:0
Information

​The self-locking switch is a switching power supply that uses contemporary power electronic technology to manipulate the ratio of the time when the switch tube is applied for registration and shutdown to maintain a steady output voltage. The self-locking switch is generally composed of pulse width modulation (PWM) control IC and MOSFET. Self-locking switch and linear stabilized power supply are more, the cost of both increases with the addition of power, but the speed of the two is different. The cost of the linear regulated power supply is higher than the self-locking switch at a certain power point, which is called the cost rotation point. Following the development and innovation of power electronic technology, the self-locking switch technology is also constantly innovating. This cost rotation point is gradually shifting to the low-output power engineering end, which provides a wide open indoor space for the self-locking switch.

The high frequency of the self-locking switch is the direction of its deployment. The high frequency makes the self-locking switch miniaturized, and makes the self-locking switch into a more general range of applications, especially in the application of high-tech skills, which promotes high-tech skills Miniaturization and lightness of commodities. The deployment and application of other self-locking switches have key implications in terms of energy conservation, asset conservation, and maintenance of the natural environment. The key power engineering electronic equipment used in self-locking switches are diodes, IGBTs and MOSFETs. SCR has very few applications in self-locking switch type inverter circuits and soft-start power circuits. GTR drivers are difficult and the power switching frequency is low, and they are gradually replaced by IGBTs and MOSFETs.

Three standard expansion

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

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 instead of communication

Classification of self-locking switches:

Everyone's self-locking switch skills are developing and designing related power engineering electronic equipment while developing and designing power switch DC frequency conversion skills. The two promote each other to promote self-locking switches with an increase rate that exceeds the two-digit data. , Small, thin, low noise, high firmness, anti-disturbance azimuth deployment. Self-locking switches can be divided into AC/DC and DC/DC two types. DC/DCSPWM has been modularized design, and the overall planning skills and manufacturing skills have been mature and standardized in various countries in the world, and have been recognized by customers, but AC The modular design of /DC, due to its own characteristics, urges in the process of modular design to encounter relatively messy skills and technical problems. The structure and characteristics of the two major types of self-locking switches are explained in the following.

G

Self-locking switches will produce a lot of interference than linear stabilized power supplies. For common-mode interference and smart power-consuming equipment, you should listen to the grounding device and shielding method. According to EMC management such as ICE1000, EN61000, FCC, etc., self-locking switches are all Listen to opinions on EMC electromagnetic compatibility test methods, so self-locking switches should generally contain EMC electromagnetic compatibility test filters. For example, for the self-locking switch of HA series products of Lead Huafu Technology, the FG terminal grounding surface or the customer's case can be satisfied to meet the requirements of the electromagnetic compatibility test.

Maintain the power circuit

Self-locking switches must have maintenance functions such as over-current, over-temperature, and short-circuit faults in the overall planning. Therefore, in the overall planning, a self-locking switch control module with a perfect maintenance function should be selected and the main parameters of the skills of maintaining power circuits It should be consistent with the working characteristics of power-consuming machinery and equipment to avoid damage to power-consuming machinery or self-locking switches.

The deployment position of the self-locking switch is high frequency, high firmness, low consumption, low noise, anti-interference and modular design. Since the important technology of light, small and thin self-locking switch is high frequency, various overseas self-locking switch manufacturers are focusing on the development and design of new high-intelligence system components, which is very important to improve the loss of secondary rectifier equipment. , And add high-tech innovation to the output power ferrite core (Mn? Zn) material to improve the high magnetic effect at high frequency and large magnetic flux density (Bs), and the miniaturization of power capacitors It is also an important skill. The application of SMT technology has promoted the long-term development trend of self-locking switches. Components are arranged on both sides of the circuit board to ensure that the self-locking switches are light, small and thin. Red wave self-locking switch is dedicated to self-locking switch series products, etc. Hope to dial the phone 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 the self-locking switch, and the work of the self-locking switch has been greatly improved. high efficiency. Regarding the overall goal of high robustness, the UK's self-locking switch manufacturers have gone through methods such as reducing the amount of operating current and lowering the junction temperature to reduce the ground stress of the device, and promote the further improvement of the robustness of the 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 planning can be an N+1 redundant power management system, and the volume expansion in series mode can be carried out. In view of the large operating noise of the self-locking switch, if you are alone looking for higher frequencies, 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 skills, so a lot of work is still needed in this area to make this skill 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