- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385898 > TA8435HQ (Toshiba Corporation) PWM CHOPPER TYPE BIPOLAR STEPPING MOTOR DRIVER PDF資料下載
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動器 |
| 文件頁數(shù)： | 24/28頁 |
| 文件大?。?/td> | 480K |
| 代理商： | TA8435HQ |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁當前第24頁第25頁第26頁第27頁第28頁
TA8435H/HQ
2001-06-13
24
4.
About PWM oscillation frequency (external capacitor setting)
An external capacitor connected to the OSC pin is used to internally generate a sawtooth waveform.
PWM is controlled using this frequency.
Toshiba recommend 3300 pF for the capacitance by taking variation between ICs into consideration.
5.
About external Schottky diode
A parasitic diode is created on the lower side of the output. When PWM is controlled, current flows to the
parasitic diode. This current results in a punch
through current and micro
step waveform fluctuation.
Therefore, make sure to externally connect a Schottky barrier diode.
The external diode can reduce heat generated in the IC.
6.
Power dissipation
The IC power dissipation is determined by the following equation (In a case where shottky diode is
connected between Output pin and GND):
P = V
CC
× I
CC
+ VM × IM + I
O
(t
ON
× V
SAT
U + V
SAT
L)
t
ON
= T
ON
/ T
S
(PWM control ON duty)
The higher the ambient temperature, the smaller the power dissipation.
Check the P
D
Ta curve and design heat dissipation with a sufficient margin.
7.
About heatsink fin processing
The IC fin (rear) is electrically connected to the rear of the chip.
When current flows to the fin, the IC malfunctions.
If there is any possibility of a voltage being generated between the IC GND and the fin, either ground
the fin or insulate it.
相關PDF資料 |
PDF描述 |
|---|---|
| TA8440HQ | Full-bridge Driver (H-Switch) for DC Motor (Driver for Switching between Forward and Reverse Rotation) |
| TA8445K | POWER AMPLIFIER FOR DRIVING A DEFLECTION CIRCUIT OF A COLOR TELEVISION |
| TA8449P | QUAD POWER OP. AMP |
| TA8461F | DUAL POWER OPERATIONAL AMPLIFIER |
| TA8462F | FAN MOTOR DRIVER IC |
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) |
發(fā)布緊急采購，3分鐘左右您將得到回復。