- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄196343 > TB62218FNG STEPPER MOTOR CONTROLLER, PDSO48 PDF資料下載
參數(shù)資料
| 型號(hào)： | TB62218FNG |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, PDSO48 |
| 封裝： | 0.300 INCH, 0.50 MM PITCH, PLASTIC, TSSOP-48 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 463K |
| 代理商： | TB62218FNG |
TB62218FNG
2010-10-07
18
Overcurrent Shutdown (ISD) Circuitry
ISD Masking Time and ISD On-Time
The overcurrent shutdown (ISD) circuitry has a masking time to prevent current spikes during Irr and
switching from erroneously tripping the ISD circuitry. The masking time is a function of the chopper frequency
obtained by CR:
masking_time
= 4 × CR_frequency
The minimum and maximum times taken to turn off the output transistors since an overcurrent flows into
them are:
Min: 4
× CR_frequency
Max: 8
× CR_frequency
It should be noted that these values assume a case in which an overcurrent condition is detected in an ideal
manner. The ISD circuitry might not work, depending on the control timing of the output transistors.
Therefore, a protection fuse must always be added to the VM power supply as a safety precaution. The
optimal fuse capacitance varies with usage conditions, and one that does not adversely affect the motor
operation or exceed the power dissipation rating of the TB62218FNG should be selected.
Calculating OSCM Oscillating Frequency
The OSCM oscillating frequency can be approximated using the following equation:
Where:
C = Capacitor capacity
R1= Resistance
Assigning C = 270
× 1012 [F], R1= 3600 [] to get:
fOSCM = 1.61 × 106 1.6 MHz
OSC_M oscillation
(chopper waveform)
An overcurrent starts flowing into the output transistors
Disabled (reset state)
ISD masking time
ISD on-time
1 chopping cycle
min
max
min
max
)
R
(
C
.
fOSCM
500
56
0
1
1 +
×
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TB6568KQ | BRUSH DC MOTOR CONTROLLER, 3 A, PSIP7 |
| TB6581HG | BRUSHLESS DC MOTOR CONTROLLER, PZIP25 |
| TB6591FLG | STEPPER MOTOR CONTROLLER, 0.8 A, PQCC48 |
| TB6674PG | STEPPER MOTOR CONTROLLER, 0.4 A, PDIP16 |
| TBA130-2 | FM SOUND IF FOR TELEVISION APPLICATIONS WITH IC BUS AND SCART |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TB62225SM2 | 制造商:THOMAS & BETTS 功能描述: |
| TB62237BFG(M) | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Combination Motor Driver 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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| TB62237SM | 制造商:THOMAS & BETTS 功能描述: |
| TB62247AFG(O,C,8) | 制造商:Toshiba America Electronic Components 功能描述: |
| TB6225030 | 制造商:THOMAS & BETTS 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。