參數(shù)資料
型號： TA8435HQ
廠商： Toshiba Corporation
元件分類： 基準電壓源/電流源
英文描述： PWM CHOPPER TYPE BIPOLAR STEPPING MOTOR DRIVER
中文描述： 脈寬調(diào)制斬波型雙極步進電機驅(qū)動器
文件頁數(shù)： 6/28頁
文件大小： 480K
代理商： TA8435HQ
TA8435H/HQ
2001-06-13
6
OSC FREQUENCY CALCULATION
Sawtooth OSC circuit consists of Q
1
through Q
4
and R1 through R4.
Q
2
is turned “off” when V
OSC
is less than the voltage of 2.5 V + V
BE
Q
2
approximately equal to 2.85 V.
V
OSC
is increased by C
OSC
charging through R1.
Q
3
and Q
4
are turned “on” when V
OSC
becomes 2.85 V (Higher level.)
Lower level of V (4) pin is equal to V
BE
Q
2
+ V
SAT
Q
4
approximately equal to 1.4 V.
V
OSC
is calculated by following equation.
OSC
=
·R
C
1
exp
1
V
OSC
-------------------
(1)
Assuming that V
OSC
= 1.4 V (t = t
1
) and = 2.85 V (t = t
2
)
C
OSC
is external capacitance connected to pin (4) and R1 is on
chip 10 k
resistor.
Therefore, OSC frequency is calculated as follows.
)
5
1.4
(
n
·
R
C
1
t
OSC
=
λ
---------------------- (2)
)
5
2.85
(
n
·
R
C
2
t
OSC
=
λ
-------------------- (3)
))
5
2.85
(
n
·
R
5
1.4
(
n
1·
(R
C
1
t
t
1
f
OSC
1
2
OSC
=
=
λ
λ
μF)
:
(kHz)(C
·C
5.15
1
OSC
OSC
=
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相關代理商/技術參數(shù)
參數(shù)描述
TA8435HQ(5) 功能描述:馬達/運動/點火控制器和驅(qū)動器 Stepping Motor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
TA8440 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:DC MOTOR FULL BRIDGE DRIVER
TA8440F 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:DC MOTOR FULL BRIDGE DRIVER F TYPE: UNDER DEVELOPMENT
TA8440H 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Full-bridge Driver (H-Switch) for DC Motor (Driver for Switching between Forward and Reverse Rotation)
TA8440HQ 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Full-bridge Driver (H-Switch) for DC Motor (Driver for Switching between Forward and Reverse Rotation)
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