Thermal Solutions for the Power Supply Industry | Fengheng Technology
Fengheng Technology provides professional heat dissipation solutions for the power supply industry. Its products are widely used in switching power supplies, power modules, power adapters, charger power supplies, mobile power management modules and other equipment, meeting the stringent requirements of power supply products for high reliability, long life and compact space.
I. Four Core Pain Points of Heat Dissipation in the Power Supply Industry
Pain Point 1: High power density leads to localized overheating
Phenomenon:The internal temperature distribution of miniaturized switching power supplies is uneven, and the temperature of power devices (MOSFETs, diodes) is too high.
root cause:Power supply designs are trending towards miniaturization and high power density, but have limited space for heat dissipation.
Industry data:In power supply failures, approximately 50% are related to overheating.
Pain Point 2: Reliability Requirements for 24/7 Continuous Operation
Phenomenon:Communication power supplies and industrial power supplies operate year-round, and insufficient fan life can cause equipment downtime.
root cause:Inexpensive oil-bearing fans have a lifespan of only 10,000 to 20,000 hours, far less than the design life of the power supply.
Industry feedback:Power supply manufacturers report that "fan failure is the main reason for power supply returns."
Pain Point 3: Limited Fan Size Due to Compact Space
Phenomenon:The internal space of the power adapter and modular power supply is extremely limited, making it impossible to install a standard fan.
root cause:With highly integrated power supplies, the space for heat dissipation is severely compressed.
Solution:Choose an ultra-thin/micro fan (10mm or 15mm thick).
Pain Point 4: EMC Electromagnetic Interference Requirements for Fans
Phenomenon:Electromagnetic interference generated by the fan motor can affect the EMC test results of the power supply.
root cause:The fan was not designed with EMC suppression in mind.
Industry Standards:Power supply products must be EMC certified, and fans must be designed for low interference.
II. Comparison Table of Mainstream Power Supply Equipment Fan Solutions
| Equipment type | Brand/Model | Fan position | Original factory specifications | Frequently Asked Questions | Fengheng Upgrade Recommendation | Reasons for upgrading | Switching power supply | Mean Well, Schneider Electric, Siemens | Heat dissipation from the casing
| Prolonged exposure to high temperatures can cause it to fail.
| FH4010 / FH4020 / FH5015 Dual Ball Bearing Version
| Lifespan 50,000 hours
| Power Module / Modular Power Supply
| Vicor, SynQor, Delta
| Internal heat dissipation
| Insufficient heat dissipation in compact space
| FH2510 / FH3010 Miniature Dual Ball Version
<td小尺寸，大风量，长寿命
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III. Quick Reference Table for Power Supply Cooling Solutions
| Equipment type | Heat dissipation requirements | Recommended Model | Core parameters | Switching power supply | High reliability heat dissipation
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IV. Key Points of Power Supply Heat Dissipation Design
1. Air duct design
- Power modules typically employ front-to-rear or side-to-side airflow ducts.
- High power density power supplies need to consider multi-stage fan series boosting.
- To avoid hot air recirculation causing the power device temperature to rise.
2. Fan Selection Principles
- Switching power supply: Double ball bearings are preferred, with a lifespan of ≥50,000 hours.
- Modular power supply: Miniature fans are preferred, with sizes matching the installation space.
- Portable power supply: Prioritize low-power fans, low power consumption<1W
3. EMC Design Requirements
- Select a fan with EMC suppression circuitry.
- Add a filter capacitor to the power input
- Keep fans at an appropriate distance from power devices
V. Frequently Asked Questions (FAQ)
Q1: How often should the fan of a switching power supply be replaced?
A: Original factory oil-impregnated bearing fans typically last 1-2 years. WindConst dual ball bearing fans can last 5-7 years.
Q2: What if the power supply module is too small to fit a standard fan?
A: Choose a miniature fan. The Fengheng FH2510/FH3010 miniature series is only 10mm thick, making it suitable for compact spaces.
Q3: How do I determine if a fan is needed on a power adapter?
A: If the surface temperature exceeds 60℃ or the internal power device temperature exceeds 85℃, it is recommended to install a fan.
Q4: Will the power supply fan affect EMC testing?
A: Ordinary fans may have some interference. However, the Fengheng Power series fans have a built-in EMC suppression circuit to reduce electromagnetic interference.
Q5: Do you support sample testing?
A: Free sample testing is available. We can provide original fan specifications and help you find the right upgrade solution.
VI. Contact us to obtain samples
Telephone: +86 13751170802
Official website: www.szfengheng.com
We welcome inquiries and cooperation from power supply manufacturers, power module manufacturers, and charger producers.