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　　1. AC-DC power module: the core power of modern electronic systems

The AC-DC power module is a complete power solution that integrates AC to DC functionality. It integrates complex power conversion circuits into a compact package to provide stable and reliable DC power for various electronic devices. Compared with discrete power solutions, modular design greatly simplifies the system design process and improves product consistency and reliability.

As electronic products develop towards miniaturization and high efficiency, AC-DC power modules have become the preferred power supply solution in industrial control, communication equipment, medical instruments and other fields with their excellent performance and convenient use experience.

　　2. Selection Guide

　　4.1 Power selection

Calculate the maximum power consumption of the system and reserve 20-30% margin

Consider transient peak power requirements

In high-temperature environments, derating should be considered

　　4.2 Input voltage selection

Universal input: 85-264VAC (applicable worldwide)

Narrow range input: 176-264VAC (specific areas)

DC input: 100-370VDC (special applications)

　　4.3 Security authentication selection

Industrial equipment: UL/EN/IEC 62368

Medical equipment: UL/EN 60601 (2×MOPP)

Information equipment: UL/EN 60950

Other specific industry standards

　　3. Frequently Asked Questions

　　Q1: How to ensure the long-term reliability of the power module?

Key measures to ensure reliability:

​Choose high-quality components

Strict production process control

Complete aging test process

Reasonable heat dissipation design

Correct installation and use

　　Q2: Does the power module require additional heat dissipation measures?

​According to specific conditions of use:

Low power module (<25W): usually natural heat dissipation is enough

Medium power module (25-100W): It is RECOMmended to add a heat sink

High power module (>100W): forced air cooling is required

High temperature environment: derating must be considered

　　Q3: Does the module support parallel use?

Some models support parallel connection:

Modules with current sharing function can be directly connected in parallel

Ordinary modules require an external current sharing circuit

It is recommended to consult technical support for specific solutions

Pay attention to current distribution during redundant design

　　Q4: How to deal with electromagnetic compatibility issues?

EMC handling suggestions:

Select modules that have passed relevant EMC certifications

Install filters at the input and output ends

Good PCB layout and grounding design

Use shielding cover if necessary

　　4. Troubleshooting Guide

　　5. Precautions for installation and use

　　5.1 Installation requirements

Make sure the installation surface is flat and clean

Use the recommended torque to tighten the mounting screws

Maintain adequate ventilation and cooling space

Avoid mechanical stress acting on the module body

　　5.2 Electrical connection

Use connecting cables with appropriate wire diameters

Input and output cables are routed separately

High-frequency switching loop area is minimized

Ensure reliable and effective grounding

　　5.3 Test verification

Perform insulation resistance test before powering on

Gradually load verification output features

Monitor whether the temperature rise is within the allowable range

Conduct long-term aging tests to verify reliability

　　6. Quality assurance and after-sales service

　　6.1 Quality Commitment

All products pass 100% aging test

Mean time between failures (MTBF) >1 million hours

Provide complete test report and certification certificate

Comply with environmental protection requirements such as RoHS and REACH

　　6.2 Technical support

Provide free technical consultation and selection services

Rapid sample provision (1-3 working days)

Application technical support and complete solutions

Customized development services to meet special needs

　　6.3 After-sales guarantee

Provide 18 months quality guarantee period

Establish customer quality file tracking service

​Respond quickly to customer feedback and questions

Complete return, exchange and repair procedures

　　7. Application case sharing

　　7.1 Industrial control system

In an automated production line project, our 60W industrial-grade power module was used to achieve:

Continuous and stable operation for more than 20,000 hours

​Normal operation at ambient temperatures from -25°C to +70°C

Passed strict EMC test certification

Greatly shorten customer product development cycle

　　7.2 Medical equipment

After a well-known medical equipment manufacturer selected our medical-grade power modules:

Fully meets 2×MOPP safety isolation requirements

Leakage current is controlled below 0.1mA

Passed all medical safety certifications

Improved the reliability and safety of the entire machine