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參數(shù)資料
| 型號(hào)： | TB6581HG |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PZIP25 |
| 封裝： | PLASTIC, HZIP-25 |
| 文件頁數(shù)： | 13/15頁 |
| 文件大?。?/td> | 410K |
| 代理商： | TB6581HG |
TB6581HG
2008-09-12
7
5.
Setting the carrier frequency
This function sets the triangular wave cycle (carrier cycle) necessary for generating the PWM signal.
(The triangular wave is used for forcibly turning on the lower transistor when the motor is driven by
square wave.)
Carrier cycle
= fosc/254 (Hz)
fosc = reference clock (ceramic oscillation)
6.
Outputting the reverse rotation detection signal
This function detects the motor rotation direction every electrical angle of 360°. This function judges
whether the actual direction of a rotating motor coincides with that of the internal reference voltage.
Actual Motor Rotating Direction
REV Pin
Drive Mode
CW (forward)
HIGH
Square waveform (120° turn-on mode)
CCW (reverse)
LOW
Sine-wave waveform (180° turn-on mode)
*: CW or CCW of the motor is determined by the direction of the Hall signal, which is specified in the timing
chart on page 9.
*: When the REV pin is set to LOW, and the Hall signal is higher than 5 Hz, sine-wave drive mode is turned
on.
7.
Protecting input pin
(1)
Overcurrent protection (Pin Idc)
When the DC-link-current exceeds the internal reference voltage, gate block protection is performed.
Overcurrent protection is released for each carrier frequency.
Reference voltage
= 0.5 V (typ.)
(2)
Positional signal abnormality protection
Output is turned off when the positional signal is HHH or LLL; otherwise, it is restarted.
(3)
Monitor protection for VCC7/ VCC15 low supply voltage
For power supply on/off outside the operating voltage range, the U, V and W drive outputs are
turned off and the motor is stopped when there is a power supply fault.
< VCC7>
< VCC15>
Turn-off drive output
Turn-on drive output
Power supply voltage
4.5 V (typ.)
4.0 V (typ.)
GND
VB
VCC7
Output
Turn-off drive output
Turn-on drive output
Power supply voltage
11.5 V (typ.)
11.0 V (typ.)
GND
VB
VCC15
Turn-off drive output
Output
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