无传感器BLDC驱动新选择！PT2513A/B 芯片，高效紧凑还省心

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A New Choice for Sensorless BLDC Drive! PT2513A/B Chip, Efficient, Compact and Worry-Free

2025.10.30

5 次

PT2513 无传感器 BLDC

PT2513A/B

In the drive solutions for small fans, water pumps and other devices, the energy efficiency, compatibility and stability of the chip directly affect the product experience. The PT2513A/B three-phase sensorless BLDC motor driver chip launched by Princeton Technology Corp. has become an ideal choice for compact and low-cost drive solutions with its integrated design, rich protection functions and flexible control methods. Today, we will fully unlock the core advantages of this chip!

Core Highlights: Balancing Performance and Convenience

- Wide voltage adaptation: The 6V~16V operating range covers the needs of most small motors. It can work with a single VDD power supply and only requires a few peripheral components, simplifying circuit design. - 180° sinusoidal current control: Significantly reduces electromagnetic noise during operation, suitable for scenarios with high noise reduction requirements. - Dual control modes available: PT2513A supports PWM/VSP (DC) open-loop control; PT2513B additionally features CLK input closed-loop control, accurately matching different speed control needs. - Comprehensive protection mechanism: Built-in functions such as thermal shutdown, lock-up protection, overcurrent limiting and overtemperature protection, effectively extending the service life of the chip and motor.

Key Parameters & Practical Design

- Package: Adopts HTSSOP20 with bottom heat dissipation, featuring excellent heat dissipation efficiency. PT2513A is pin-compatible with PT2513 HTSSOP20, enabling convenient replacement. - Supports FG or 1/2FG speed signal output: Real-time monitoring of motor speed is achievable, and the conversion between speed (RPM) and FG frequency is simple and intuitive. - Flexible forward/reverse rotation setting: Realized via the FWR pin or motor wiring swap, meeting the installation requirements of different devices. - Optimized startup performance: Through initial alignment, progressive voltage adjustment, and the adjustable capacitor design of the OSC pin, it adapts to the smooth startup of motors with different load weights.

Application Scenarios: Covering Various Small-Sized Devices

The PT2513A/B is specifically designed for 3-phase sensorless BLDC motor driving, with core applications including: - Small cooling fans, table fans, and automotive fans - Micro water pumps and circulating water pumps - Other small BLDC motor devices requiring efficient and low-noise driving Whether it is mass-produced products pursuing cost control or precision equipment focusing on performance stability, this chip can provide adaptive solutions through flexible parameter settings and reliable protection mechanisms.

Selection & Ordering Tips

- Uniform package: 20-PIN HTSSOP (173MIL) with clear model differentiation – PT2513A-HT corresponds to the open-loop control version, while PT2513B-HT supports closed-loop control. - Simple component selection for application circuits: Resistor and capacitor parameter ranges are clear, enabling quick matching according to actual motor specifications. - Operating temperature range: -40℃~+105℃, adapting to most indoor and outdoor usage environments. Looking for an efficient way to drive small BLDC motors while simplifying design and reducing costs? The PT2513A/B chip is undoubtedly a high-quality choice that balances cost-effectiveness and reliability.

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