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型号：PT2502

封装：SSOP28

品牌：PCT/普诚

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DESCRIPTION

PT2502 is an integrated 12V 3-phase sensor-less (noHall sensor required) BLDC motor controller. Threephase motor control with square/trapezoidal wave isbased on detecting a zero-crossing signal generatedfrom the motor back-EMF (BEMF) and providesrobust control stability that is not easily affected bydifferent motors. Soft-switching control technologyoutputs trapezoidal/quasi-sinusoidal-wave currentand further reduces audible electro-current noise.PT2502 provides an internal +5V voltage regulator tosupply power to the analog and digital blocks. For400V high-voltage motor control applications, anexternal high voltage gate driver and six N-channelMOSFETs are required. For 12V to 24V operation,PT2502 can drive high-side P-channel MOSFET andlow-side N-channel MOSFET with a simple levelshifter circuit. Optimized parameter settings fordifferent motors and applications may be written toOTP memory. The PT2502 is provided in an SSOP28package.

FEATURES

● 3-phase sensor-less BL .DC control

● Intemal +5V regulator and 5V - 24V power application

● Internal OTP write support for motor parameters

● I2C interface for parameter seting

● Over-current protection and over-voltage protection

● Thermal protection function with an extemal NTC resistor

● Lock protect function

● PWM or DC control input support for motor speed control

● FG output function

APPLICATIONS

● 3-phase sensor-less BLDC motor controller

● High speed fan

● Water pump

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