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参数资料
| 型号： | TB6551FAG |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, PDSO24 |
| 封装： | 0.300 INCH, 1 MM PITCH, PLASTIC, SSOP-24 |
| 文件页数： | 20/20页 |
| 文件大小： | 284K |
| 代理商： | TB6551FAG |
TB6551FG/FAG
2008-12-24
9
Functional Description
Basic operation
On start-up, the motor is driven by the square-wave turn-on signal based on a positional signal. When
the positional signal reaches number of rotations f
= 5 Hz or higher, the rotor position is inferred from the
positional signal and a modulation wave is generated. The modulation wave and the triangular wave are
compared; the sine-wave PWM signal is then generated and the motor is driven.
From start to 5 Hz: When driven by square wave (120° turn-on) f
= fosc/(212 × 32 × 6)
5 Hz or higher: When driven by sine-wave PWM (180° turn-on) When fosc = 4 MHz, approx. 5 Hz
Function to stabilize bootstrap voltage
(1)
When voltage instruction is input at Ve ≤ 0.2 V:
The lower transistor is turned on at the regular (carrier) cycle. (On duty is approx. 8%.)
(2)
When voltage instruction is input at Ve > 0.2 V:
During sine-wave drive, the drive signal is output as it is.
During square-wave drive, the lower transistor is forcibly turned on at the regular (carrier) cycle.
(On duty is approx. 8%.)
Note: At startup, to charge the upper transistor gate power supply, turn the lower transistor on for a fixed
time with Ve ≤ 0.2 V.
Dead time function: upper/lower transistor output off-time
When the motor is driven by a sine-wave PWM, dead time is generated digitally in the IC to prevent any
short circuit caused by the simultaneous turning on of upper and lower external power devices.
When a square wave is generated in full duty cycle mode, the dead time function is turned on to prevent
a short circuit.
Td Pin
Internal Counter
TOFF
High or Open
11/fosc
2.6
μs
Low
16/fosc
3.8
μs
TOFF values above are obtained when fosc = 4.19 MHz.
fosc = reference clock (ceramic oscillation)
Correcting lead angle
The lead angle can be corrected in the turn-on signal range from 0 to 58° in relation to the induced
voltage.
Analog input from LA pin (0 V to 5 V divided by 32):
0 V
= 0°
5 V
= 58° (when more than 5 V is input, 58°)
Setting carrier frequency
This feature 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 / 252 (Hz)
fosc = Reference clock (ceramic oscillation)
Switching the output of turn-on signal
This function switches the output of the turn-on signal between high and low.
Pin OS:
High
= active high
Low
= active low
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TB6551FAG(O,EL,DRY | 功能描述:马达/运动/点火控制器和驱动器 3-Phase Full-Wave PWM 6V to 10V 2.6us RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TB6551FG | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:3-Phase Full-Wave Sine-Wave PWM Brushless Motor Controller |
| TB6551FG(0,EL,DRY) | 制造商:Toshiba America Electronic Components 功能描述:IC MOTOR CONTROLLER PAR 24SSOP |
| TB6551FG(EL,DRY) | 功能描述:马达/运动/点火控制器和驱动器 Brushless DC Motor Controller RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| TB6551FG(O,EL,DRY) | 功能描述:马达/运动/点火控制器和驱动器 3-Phase Full-Wave Sine-Wave PWM 12V RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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