BLDC Pre Drivers and Integrated Solutions


PT2522

PT2522 is a combination of PT2502 and PT5619. It is a three-phase, sensor-less brushless DC motor control driver chip. The three-phase control is a square wave/trapezoidal wave control method based on detecting the zero-crossing of the motor back electromotive force (BEMF). It has a stable control effect and is not easily affected by motor differences. The chip's soft switching technology can achieve trapezoidal wave or sine wave like current waveform, further reducing the phase electromagnetic noise. The built-in +5V LDO of the chip provides the operation of the logic circuit and the analog circuit. Three 90V half-bridge gate drivers are integrated at the same chip, which is particularly suitable for gate drive of high-speed power MOSFETs in three-phase motor applications. PT2522 provides to change the internal parameter settings by burning to optimize different motors and applications. The package of PT2522 is LQFP32.

FEATURES


● Sensor-less three-phase brushless DC motor control driver chip

● Integrated three 90V half-bridge gate drivers

● Driver pull-out/inrush current: 1.2A / 2.0A

● Built-in +5V LDO (power input below VDD 24V)

● OTP (one time programming) for motor parameters

● Set OTP parameters through I2C

● Current limit and lock protection

● Temperature protection function (using external NTC resistor)

● VSP (DC), PWM or Clock input for speed control

● FG, RD indicator signal output

● Package Type - LQFP 32


APPLICATIONS


● Three-phase DC brushless motor below 48V

● Power tools and handheld vacuum cleaner

● Water pump application

資源下載

Documentation

TitleFileVersionDate
DatasheetPT2522.pdfV1.12021/10/1

Tools

Application Note