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参数资料
| 型号： | TB62201AF |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1.5 A, PDSO38 |
| 封装： | 0.450 INCH, 0.65 MM PITCH, HEAT SINK, PLASTIC, SOP-36/38 |
| 文件页数： | 71/89页 |
| 文件大小： | 1396K |
| 代理商： | TB62201AF |
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TB62201AF
2005-04-04
73
Points for Control that Includes Current of 0%
In modes other than 2-Phase Excitation mode (from 1-2 Phase Excitation mode to 4W1-2 Phase Excitation mode),
when the current is controlled to 0%, the TB62201AF’s output transistors are all turned off.
At the time, the coil's energy returns to the power supply through the parasitic diodes. If the same current is
applied several times and is within the rated current, then : the power consumed by the on-resistance when current
flows to the output MOS will be less than the power consumed when current is applied to the parasitic diodes.
Therefore, when controlling the current, rather than setting 0%, set the current to the next step beyond 0% (the
minimum step in the reverse direction) for better power dissipation results.
However, if the 0% (actually 10%) current cycle is long, the power dissipation may be greater than in Off mode
because of the need for constant-current control.
Therefore, Toshiba recommend setting the current according to the actual operating pattern. (1-2 Phase Excitation
mode is the most effective.)
Flyback Diode Mode
Non-flyback Diode Mode
Output off
period
Diode parasite
Constant-
current
control
[%]
100
10
0
10
100
Load
To VM power supply
U2
OFF
L2
OFF
R
RS
U1
OFF
L1
OFF
Forced Off mode
PGND
Charge
RS pin
The coil’s energy returns through
the parasitic diodes.
Because VDS < VF, the power
dissipation is large.
Constant-
current
control
[%]
100
10
0
10
100
Charge
Specifies a level of 10%,
either side of 0.
U2
OFF
L1
Load
To VM
L2
U1
Charge mode
PGND
ON
RS pin
The coil’s energy returns through
the MOS, which is turned on.
Then the coil is charged to a level
of 10%.
The power dissipation is smaller
than when the energy is returned
via the parasitic diode.
(However, the longer the
±10%
rated current control time, the
longer the period of current
dissipation.)
R
RS
Constant-
current
control
Constant-
current
control
Constant-
current
control
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TB62201AFG | 制造商:Toshiba 功能描述:Stepper Motor Driver 5V 38-Pin (36+2Tab) HSOP 制造商:Toshiba 功能描述:Stepper Motor Driver 5V 38-Pin (36+2Tab) HSOP Cut Tape |
| TB62201AFG(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 |
| TB62202AFG | 制造商:Toshiba America Electronic Components 功能描述: |
| TB62202AFG(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 |
| TB62206FG | 制造商:Toshiba America Electronic Components 功能描述:2-Phase Stepping Motor Driver 5V 22-Pin(20+2Tab) HSOP |
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