A New Benchmark for Sensorless BLDC Drivers! PT2504 Chip Stands Out with These Advantages

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2025.12.24

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PT2504 Sensorless BLDC Drivers

The PT2504 chip stands out with these advantages!

In the motor drive scenarios of small fans, water pumps and other equipment, are you often troubled by these problems: complex circuits caused by numerous components, high operating noise, excessive energy consumption, and unstable startup?

Don't worry! The PT2504 sensorless sinusoidal BLDC controller, the flagship product of Junmin Technology, offers a one-stop solution to these pain points with its highly integrated design and comprehensive performance optimization!

Quick Glimpse of Core Highlights – Winning Fans with Strength

As a chip specifically designed for high-efficiency motor drives, the PT2504 is fully loaded with advantages from specifications to applications:

Wide Voltage Adaptation + Minimalist Design:

Supports 9V-28V wide voltage operation, requiring only a single VDD power supply. A complete circuit can be built with just a few peripheral components. The compact TSSOP24 package perfectly meets the space requirements of small devices.

Sensorless Sinusoidal Drive:

Adopts 180° sinusoidal current control technology to significantly reduce electromagnetic noise. Equipped with a sensorless detection scheme, it eliminates the need for additional sensors, saving costs while improving reliability.

Free Switching Between Dual Control Modes:

Supports open-loop control via PWM/VSP input, and can also achieve closed-loop control (speed/CLK frequency/current closed-loop) through SEL pin configuration, flexibly adapting to different application scenarios.

Comprehensive Protection Mechanisms:

Built-in lock-up protection, overcurrent protection (OCP), current limiting (OCL), and soft-start circuit. It also supports VM overvoltage protection, providing all-round protection for motors and the chip itself.

Precise Speed Regulation + Status Feedback:

The FG speed signal output enables real-time speed monitoring. It supports maximum speed limitation and angle compensation, with convenient forward/reverse switching. The speed regulation range covers a variety of application needs.

Unveiling Key Specifications – Peak Performance Delivered

Power Supply Voltage: 9V-28V (Absolute Maximum Rating: 32V)

Driving Capability: Directly drives external PNMOS/NMOS. High-side gate drive voltage: VDD-10V; Low-side: 10V

Control Frequency: MOS drive switching frequency: 30KHz-90KHz; PWM input frequency: 1KHz-25KHz

Operating Environment: Wide temperature range of -40℃~+105℃, adaptable to complex working conditions

Quiescent Power Consumption: Typical value of only 5mA, featuring significant energy efficiency advantages

Wide Application Scenarios & Exceptional Adaptability

Thanks to its excellent compatibility and stability, the PT2504 has become the ideal choice for the following scenarios:

✅ Three-phase sensorless BLDC motor drives

✅ Small cooling fans & silent fans

✅ Micro water pumps & circulation pumps

✅ Other small household appliance motors with strict requirements on energy consumption, noise, and size

Upgraded Design Convenience – Engineer-Friendly

For R&D engineers, the PT2504 offers unparalleled design friendliness:

✅ Built-in 5V voltage regulator (VREG) – stable operation is achievable with just an external voltage-stabilizing capacitor.

✅ Versatile SEL pin configuration – flexibly sets control modes, FG output, BEMF detection angle, and other parameters.

✅ Detailed application circuit references & component selection guidelines – clear resistor/capacitor parameters reduce development barriers.

✅ Resistor divider-based angle compensation (PAA) – optimizes operating efficiency for different rotational speeds on demand.

Why Choose PT2504?

Compared with traditional drive solutions, the PT2504 has truly achieved the triple breakthroughs of cost reduction, efficiency improvement and quality enhancement.

Cost Reduction:

Highly integrated design reduces the number of peripheral components, while the sensorless solution eliminates sensor costs.

Efficiency Enhancement:

Sinusoidal wave drive combined with closed-loop control delivers higher motor efficiency and lower quiescent power consumption.

Quality Improvement:

Comprehensive protection mechanisms and stable startup performance reduce equipment failure rates and extend service life.

Whether home appliance manufacturers are upgrading product performance or engineers are seeking cost-effective drive solutions, the PT2504 stands out as the preferred choice for BLDC motor drives, thanks to its balanced performance, user-friendly design, and reliable quality.

Want to learn more technical details? Visit Junmin Technology's official website (http://www.junmintech.cn) to view the complete datasheet, or contact the official customer service for samples and technical support.

Let the PT2504 inject efficient, stable, and quiet driving power into your products, unlocking new possibilities for motor applications!

深圳市钧敏科技有限公司

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