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參數(shù)資料
| 型號： | L6227N |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.8 A, PDIP24 |
| 封裝： | POWER, DIP-24 |
| 文件頁數(shù)： | 2/22頁 |
| 文件大?。?/td> | 389K |
| 代理商： | L6227N |
L6227
10/22
Figure 8. Output Current Regulation Waveforms
Figure 9 shows the magnitude of the Off Time tOFF versus COFF and ROFF values. It can be approximately cal-
culated from the equations:
tRCFALL = 0.6 ROFF COFF
tOFF = tRCFALL + tDT = 0.6 ROFF COFF + tDT
where ROFF and COFF are the external component values and tDT is the internally generated Dead Time with:
20K
≤ ROFF ≤ 100K
0.47nF
≤ COFF ≤ 100nF
tDT = 1s (typical value)
Therefore:
tOFF(MIN) = 6.6s
tOFF(MAX) = 6ms
These values allow a sufficient range of tOFF to implement the drive circuit for most motors.
The capacitor value chosen for COFF also affects the Rise Time tRCRISE of the voltage at the pin RCOFF. The
Rise Time tRCRISE will only be an issue if the capacitor is not completely charged before the next time the
monostable is triggered. Therefore, the on time tON, which depends by motors and supply parameters, has to
OFF
BC
DD
A
tON
tOFF
BC
ON
2.5V
0
Slow Decay
1
s tBLANK
tRCRISE
SYNCHRONOUS RECTIFICATION
1
s tBLANK
5V
VRC
VSENSE
VREF
IOUT
VREF
RSENSE
D02IN1351
tOFF
1
s tDT
1
s tDT
tRCFALL
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PDF描述 |
|---|---|
| L6228Q | STEPPER MOTOR CONTROLLER, 2.8 A, QCC32 |
| L6228QTR | STEPPER MOTOR CONTROLLER, QCC32 |
| L6229D | BRUSHLESS DC MOTOR CONTROLLER, 2.8 A, PDSO24 |
| L6229N | BRUSHLESS DC MOTOR CONTROLLER, 2.8 A, PDIP24 |
| L6229PDTR | BRUSHLESS DC MOTOR CONTROLLER, 2.8 A, PDSO36 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6227PD | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Dual Full Bridge 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 |
| L6227PDTR | 功能描述:馬達/運動/點火控制器和驅(qū)動器 Dual Full Bridge 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 |
| L6227Q | 功能描述:功率驅(qū)動器IC DMOS DUAL FULL Bridge w/ PWM RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| L6227Q_09 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:DMOS dual full bridge driver with PWM current controller |
| L6227QTR | 功能描述:功率驅(qū)動器IC DMOS DUAL FULL Bridge w/ PWM RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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