Silent & Power-Saving Black Technology! An Upgrade Solution for the "Core" of Refrigerator Fans / Exhaust Fans

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2026.05.14

6 次

PT2513B PT2432 PT2515

Does your fridge hum loudly every time it starts up?Has your bathroom exhaust fan become weaker in airflow and more power-hungry after long use?

In fact, most of these problems stem from the fan’s drive and control system.Today, let’s reveal the unsung hero behind home appliance silence and energy efficiency — the 3-phase BLDC motor drive solution.It enables refrigerator fans and exhaust fans to achieve a low-noise, long-service-life upgrade!

Why do traditional fans get noisier and more power-hungry over time?

Most traditional fans use brushed motors. Wear and tear of the carbon brushes causes constant mechanical noise, while frictional losses gradually reduce operational efficiency. After just two or three years, you’ll noticeably feel the fan struggle to run smoothly.

By contrast, Brushless DC (BLDC) motors have no carbon brushes and operate via electronic commutation. They inherently feature low noise, long service life and high efficiency, making them the top choice for upgrading small home appliances such as refrigerator fans and exhaust fans.

However, the performance of a BLDC motor depends entirely on the control capability of its driver chip. A poor drive solution not only fails to give full play to the advantages of brushless motors, but may also lead to unstable startup, poor noise suppression, insufficient protection and other issues.

Three Driver Chips, Precisely Adapted to Different Application Scenarios

To accommodate the varying operating conditions of refrigerator fans and small exhaust fans, these three highly compatible brushless driver chips cover everything from basic to high-performance models, effortlessly solving your design pain points.

BLDC

✅ PT2432 (12~24V Trapezoidal Wave Drive)Application Scenarios: Basic refrigerator cooling fans, low-power exhaust fans

Core Advantages:

Wide voltage input, covering mainstream home appliance power supply from 12V to 24V
Trapezoidal wave drive solution with cost-effectiveness and stable performance
Sensorless control, eliminating Hall sensors and reducing wiring complexity
Built-in multiple protections to handle over-current, over-voltage and under-voltage conditions steadily

✅ PT2513B (6~16V Sine Wave Drive)Application Scenarios: Silent refrigerator fans, silent bathroom exhaust fans

Core Advantages:

Sine wave drive delivers smooth current waveform, reducing motor operating noise by over 30% compared with trapezoidal wave solutions
6~16V wide voltage adaptation, compatible with low-voltage power supply systems of small home appliances
Sensorless control, no extra Hall sensors required to simplify structural design
Ultra-low standby power consumption, helping home appliances meet energy-saving certification requirements

✅ PT2515 (12~24V Sine Wave + Hall Drive)Application Scenarios: High-air-volume exhaust fans, high-end refrigerator variable-frequency fans

Core Advantages:

Supports dual-mode control of sine wave drive and Hall sensor feedback for higher speed regulation accuracy
12~24V wide voltage input, capable of driving higher-power fan motors
Sine wave drive greatly reduces motor vibration and electromagnetic noise for smoother operation
Hall sensor feedback enables softer startup, no stalling at low speed, and more stable airflow output

After the upgrade, you’ll get these tangible improvements.

✅ Sharp noise reduction:Combined with sine wave drive and BLDC motor, the operating noise drops below 25dB. Your refrigerator will no longer disturb your sleep at night, and the bathroom exhaust fan runs without annoying roaring sound.

✅ Doubled service life:Brushless motor paired with stable drive eliminates carbon brush wear. The fan lifespan is extended from the traditional 2–3 years to over 5 years, greatly reducing after-sales maintenance troubles.

✅ Visible power savings:BLDC drive efficiency reaches over 90%, saving around 40% power compared with traditional brushed motor fans. With long-term use, the saved electricity cost is enough for a brand-new fan.

✅ Worry-free operation:The chip is built-in with over-current, over-voltage and locked-rotor protection. It won’t burn out even if blocked by foreign objects, making home appliance operation safer and more reliable.

JUNMINTECH

Whether for home appliance manufacturers upgrading products or engineers optimizing fan solutions, these three driver chips can precisely match your requirements.

From cost-oriented to noise-reduction prioritization, and from entry-level to high-end models, there is always one that fits your needs perfectly.