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参数资料
| 型号： | L6228QTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, QCC32 |
| 封装： | 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32 |
| 文件页数： | 6/32页 |
| 文件大小： | 491K |
| 代理商： | L6228QTR |
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Circuit description
L6228Q
14/32
Doc ID 14321 Rev 4
Figure 13.
Output current regulation waveforms
approximately calculated 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:
20 k
Ω ≤ R
OFF ≤ 100 kΩ
0.47 nF
≤ C
OFF ≤ 100 nF
tDT = 1 s (typical value)
Therefore:
tOFF(MIN) = 6.6 s
tOFF(MAX) = 6 ms
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 be bigger than tRCRISE for allowing a
good current regulation by the PWM stage. Furthermore, the on time tON can not be smaller
than the minimum on time tON(MIN).
OFF
BC
DD
A
tON
tOFF
BC
ON
2.5V
0
Fast Deca
y
Fast Deca
y
Slow Decay
1
μs tBLANK
tRCRISE
1
μs tDT
1
μs tDT
tRCRISE
tRCFALL
SYNCHRONOUS OR QUASI
SYNCHRONOUS RECTIFICATION
1
μs tBLANK
5V
VRC
VSENSE
VREF
IOUT
VREF
RSENSE
D01IN1334
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相关代理商/技术参数 |
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|---|---|
| L6229 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DMOS DRIVER FOR THREE-PHASE BRUSHLESS DC MOTOR |
| L6229D | 功能描述:马达/运动/点火控制器和驱动器 3-Phase DC 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 |
| L6229DP | 功能描述:马达/运动/点火控制器和驱动器 3-Phase DC 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 |
| L6229DPTR | 功能描述:马达/运动/点火控制器和驱动器 3-Phase DC 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 |
| L6229DTR | 功能描述:马达/运动/点火控制器和驱动器 3-Phase DC 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 |
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