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參數(shù)資料
| 型號： | TB6520P |
| 元件分類： | 運動控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDIP16 |
| 封裝： | 0.300 INCH, 2.54 MM PITCH, PLASTIC, DIP-16 |
| 文件頁數(shù)： | 3/19頁 |
| 文件大?。?/td> | 378K |
| 代理商： | TB6520P |
TB6520P/PG
2006-3-6
11
FUNCTION DESCRIPTION OF TB6520P/PG + TA8483CP
Threephase sensorless drive
The TB6520P/PG detects the motor’s induced voltage (motor’s terminal voltage), compares it with VM (motor’s
power supply voltage) divided by 2, and generates a commutation signal based on the comparison result.
Therefore, the TB6520P/PG eliminates the need for the Hall elements and Hall ICs that have conventionally
been used to detect the motor’s rotor position.
PWM drive
The TB6520P/PG allows output duty cycles to be controlled by using its DUTY input voltage.
PWM operation is chopped by the upperside output on / off operation.
Position detection is accomplished by monitoring the motor’s terminal voltage at falling edges of PWM and
comparing the detected voltage with the reference voltage. In this way, avoid effects of the terminal voltage on
PWM are avoided. But this causes a position detection error associated with the PWM signal frequency.
Therefore, care must be taken when using the controller for highspeed motors.
Startup method
At startup, no induced voltage develops because the motor is not turning yet. For this reason, the TB6520P/PG
forcibly applies a predetermined commutation pattern to the motor as it starts.
In this case, a problem occurs that the motor cannot be started smoothly depending on its rotor position.
To solve this problem, the TB6520P/PG uses singlephase excitation (by setting the IP pin high to fix the phase
and allow current to conduct in only one phase) for a predetermined period. This helps to move the rotor
position at startup forcibly to a ready to start position.
However, since the duration of singlephase excitation and the power applied for it (DUTY input voltage)
varies with each motor, adjustment is required.
About the duration of singlephase excitation
The duration of singlephase excitation (DC excitation) can be changed by adjusting the RC constant in the
application circuit shown below.
Setup example : C = 4.7 F, R = 220 k
TB6520P/PG
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TB6524FN | BRUSH DC MOTOR CONTROLLER, 0.1 A, PDSO16 |
| TB6525F | BRUSHLESS DC MOTOR CONTROLLER, PQFP64 |
| TB6526AFG | STEPPER MOTOR CONTROLLER, 0.12 A, PDSO24 |
| TB6528P | STEPPER MOTOR CONTROLLER, 0.05 A, PDIP24 |
| TB6528P | STEPPER MOTOR CONTROLLER, 0.002 A, PDIP24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TB6520P_06 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:PWM TYPE 3−PHASE FULL−WAVE SENSORLESS MOTOR CONTROLLER |
| TB6520PG | 制造商:Toshiba America Electronic Components 功能描述: |
| TB6524FN | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:DC MOTOR DUAL FULL BRIDGE DRIVER (H−SWITCH) |
| TB6526 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:CHOPPER-TYPE BIPOLAR STEPPING MOTOR CONTROL DRIVER IC |
| TB6526F | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:CHOPPER-TYPE BIPOLAR STEPPING MOTOR CONTROL DRIVER IC |
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