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参数资料
| 型号： | TB6607FLG |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 0.8 A, PQCC36 |
| 封装： | 6 X 6 MM, 0.50 MM PITCH, LEAD FREE, PLASTIC, QON-36 |
| 文件页数： | 16/18页 |
| 文件大小： | 262K |
| 代理商： | TB6607FLG |
TB6607FLG
2008-01-15
7
Oscillator Operation: The on-chip oscillation is controlled by the charging and discharging of an external
capacitor (COSC).
Oscillator
VOSC Waveform
In the above circuit, the charging and discharging rate (VOSC) of the external capacitor is calculated as
follows:
dt
i
C
1
V
OSC
∫
=
Let the time at VOSC = 0.8 V be t1 and the time at VOSC = 1.2 V be t2, then the VOSC slope (ΔVOSC) is
calculated as:
ΔVOSC = I × (t1 t2)/COSC
which can be rewritten as:
OSC
OSC C
V
I
t2
t1
1
Δ
=
The cycle period of the triangular wave oscillation is equal to the period of rise and fall times of VOSC slope,
which is, twice the time from t1 to t2.
Hence, fOSC can be expressed as a function of COSC as follows:
OSC
C
V
2
I
t2)
(t1
2
1
f
Δ
=
=
In the above diagrams,
ΔVOSC = |1.2 V 0.8 V| = 0.4 V. Thus, fOSC can be calculated as:
OSC
C
10
6.957
1
OSC
C
A
0.4/100
2
1
f
3
×
=
×
μ
×
=
Examples: fOSC = 532 kHz when COSC = 270 pF
fOSC = 256 kHz when COSC = 560 pF
In actual applications, however, the capacitance required for COSC may slightly differ from the theoretical
value due to the board capacitance on the OSC pin and other factors. It is therefore recommended to adjust
the external capacitor value (COSC) experimentally.
1.2 V
0.8 V
VCC
100
μA
20
μA
40
k
Ω
20
k
Ω
100
μA
C
OSC
ON when
charging
ON when
discharging
OSC
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相关代理商/技术参数 |
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|---|---|
| TB6607FLG(O,EL) | 功能描述:马达/运动/点火控制器和驱动器 Combination Motor Driver 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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| TB6608FNG(C8,EL,HJ | 制造商:Toshiba 功能描述:Cut Tape 制造商:Toshiba America Electronic Components 功能描述:2ph stepping motor driver 制造商:Toshiba 功能描述:Stepper Motor Driver 3.3V T/R |
| TB6608FNG(C8OEL,HZ | 功能描述:马达/运动/点火控制器和驱动器 2-phase stepping motor Drvr 15V 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 |
| TB6608FNG(O,EL) | 功能描述:马达/运动/点火控制器和驱动器 Stepping Motor Driver 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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