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参数资料
| 型号： | TA8435HQ |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.5 A, PZIP25 |
| 封装： | PLASTIC, HZIP-25 |
| 文件页数： | 17/28页 |
| 文件大小： | 562K |
| 代理商： | TA8435HQ |
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TA8435H/HQ
2006-3-2
24
4.
PWM oscillation frequency (external capacitor setting)
An external capacitor connected to the OSC pin is used to generate internally a sawtooth waveform.
PWM is controlled using this frequency.
Toshiba recommend 3300 pF for the capacitance, taking variations between ICs into consideration.
5.
External Schottky diode
A parasitic diode can be supported on the lower side of the output. When PWM is controlled, current
flows to this parasitic diode. Unfortunately, this current has the effect of generating punch-through
current and micro-step waveform fluctuation. For this reason, be sure to connect a Schottky barrier
diode externally.
This external diode can also reduce heat generated in the IC.
6.
Power dissipation
The IC power dissipation is determined by the following equation (where the Schottky diode is connected
between the output pin and GND):
P = VCC × ICC + VM × IM + IO (tON × VSATU + VSATL)
tON = TON / TS (PWM control ON duty).
The higher the ambient temperature, the smaller the power dissipation.
Check the PD-Ta curve, and be sure to design the heat dissipation with a sufficient margin.
7.
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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TA8435HQ(5) | 功能描述:马达/运动/点火控制器和驱动器 Stepping Motor 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 |
| TA8440 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:DC MOTOR FULL BRIDGE DRIVER |
| TA8440F | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:DC MOTOR FULL BRIDGE DRIVER F TYPE: UNDER DEVELOPMENT |
| TA8440H | 制造商:TOSHIBA 制造商全称: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 制造商全称: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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