Power supply is an important module in electronic products, it is the source of energy for the operation of electronic devices.Failure of the power supply module may directly lead to the paralysis of electronic equipment, causing irreparable damage.Therefore, manufacturers pay special attention to the reliability of the power supply module when producing electronic devices.The reliability of electronic components is the basis of the reliability of electronic equipment. To improve the reliability of the equipment or system, the reliability of electronic components must be improved.After analyzing the working environment of power supply products, our FAE engineers have proposed a protection scheme for DC24V power supply to help improve the reliability level of power supply modules.

Application background

1. Global warming, more thunderstorms

2. After the power supply is damaged by lightning, it is very harmful and the maintenance cost is high

3. High surge protective equipment becomes an industry trend

Socay Protection Solution and Electronics Components

Gas Discharge Tubes(GDTs)

GDT【SC1812-230CSMD】DC Spark-over Voltage：230±20%V，Nominal Impulse Discharge Current（8/20μS）：2kA，Maximum Capacitance＜1.0pF，Minimum Insulation Resistance＞1GΩ；

GDT【SC2E5-230LSMD】DC Spark-over Voltage：230±20%V，Nominal Impulse Discharge Current（8/20μS）：5kA，Maximum Capacitance＜1.0pF，Minimum Insulation Resistance＞1GΩ；

Transient Voltage Suppressor(TVS Diodes)

TVS【SMCJ36CA】Vbr：40.0-44.2；Ir：5μA；Vrwm：36.0V，Ipp：25.8A；Vc (V) :58.1 Package：SMC/DO-214AB

Application

1.camera powe supply

2.Power Adapter

3. LED power

4. home music player

5. digital photo frame power supply

6. Car Power

7. Other DC24V power supply

The Solution Note

1.The back end of solution used TVS Diodes with fast response time and low residual voltage

2.The front end used smd GDT with  high current-handling capability 

3.Small footprint  on board

4.Used inductors L1 and L2 for decoupling, and drive GDT to leak the amplified current in the middle

5.The solution meets surge test standards such as IEC61000-4-5, GBT17626.5

6.This power solution can pass 1.2/50-8/20μS combined surge test

For more circuit protection solutions and electronics components, please go directly to Socay's website to consult online customer service http://www.socay.com.