参数资料
| 型号： | ATA6823C-PHQW |
| 厂商： | Atmel |
| 文件页数： | 12/27页 |
| 文件大小： | 0K |
| 描述： | IC MOTOR DVR H-BRIDGE 32QFN |
| 标准包装： | 4,000 |
| 应用： | H 桥，PWM 电机控制器 |
| 评估套件： | 可供 |
| 输出数： | 1 |
| 电流 - 输出： | 100mA |
| 电压 - 负载： | 7 V ~ 21.2 V |
| 电源电压： | 7 V ~ 21.2 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN（7x7） |
| 包装： | 带卷 (TR) |
| 其它名称： | ATA6823C-PHQW-ND |
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3.11.1 Cross Conduction Time
To prevent high peak currents in the H-bridge, a non-overlapping phase for switching the external power NMOS is realized. An
external RC combination defines the cross conduction time in the following way:
t CC (μs) = 0.41 × R CC (k Ω ) × C CC (nF) (tolerance: ±5% ±0.15μs)
The RC combination is charged to 5V and the switching level of the internal comparator is 67% of the start level.
The resistor R CC must be greater than 5k Ω and should be as close as possible to 10k Ω , the C CC value has to be ≤ 5nF. Use of
COG capacitor material is recommended. The time measurement is triggered by the PWM or DIR signal crossing the 50% level.
Figure 3-6. Timing of the Drivers
PWM or
DIR
50%
t
t LxHL
t Lxf
t LxLH
t Lxr
8 0%
Lx
20%
t CC
t
t CC
t HxLH
t Hxr
8 0%
t HxHL
t Hxf
Hx
20%
t
The delays t HxLH and t LxLH include the cross conduction time t CC .
3.12
Short Circuit Detection
To detect a short in H-bridge circuitry, internal comparators detect the voltage difference between source and drain of the
external power NMOS. If the transistors are switched ON and the source-drain voltage difference is higher than the value V SC
(4V with tolerances) for a time > t SC (typically 10μs) the signal SC (short circuit) will be set and the drivers will be switched off
immediately. The diagnostic pin DG1 will be set to “H”. With the next transition on pin PWM, the bit will be cleared and the
corresponding drivers, depending on the DIR pin, will be switched on again.
There is a PBAT supervision block implemented to detect the possible voltage drop on PBAT during a short circuit. If the voltage
at PBAT falls under V SCPB (5.6V with tolerances) for a time > t SC the drivers will be switched off immediately and DG1 will be set
to “H”. It will be cleared as above.
Atmel ATA6823C [DATASHEET]
9209E–AUTO–03/12
12
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相关代理商/技术参数 |
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|---|---|
| ATA6823C-PHQW-1 | 功能描述:Motor Driver Power MOSFET LIN, PWM 32-QFN (7x7) 制造商:atmel 系列:- 包装:剪切带（CT） 零件状态:有效 电机类型 - 步进:- 电机类型 - AC，DC:有刷直流 功能:控制器 - 换向，方向管理 输出配置:前置驱动器 - 半桥（2） 接口:LIN，PWM 技术:功率 MOSFET 步进分辨率:- 应用:通用 电流 - 输出:- 电压 - 电源:6.5 V ~ 22.7 V 电压 - 负载:- 工作温度:-40°C ~ 125°C（TA） 安装类型:表面贴装 封装/外壳:32-VQFN 裸露焊盘 供应商器件封装:32-QFN（7x7） 标准包装:1 |
| ATA6823C-PHQW-19 | 制造商:Atmel Corporation 功能描述:GATE DRIVER IC 制造商:Atmel Corporation 功能描述:GATE DRIVER IC - Tape and Reel |
| ATA6823-DK | 功能描述:电源管理IC开发工具 H-Bridge Gate Driver Board RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| ATA6823-PHQW | 功能描述:马达/运动/点火控制器和驱动器 Gate Driver IC 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 |
| ATA6823-PHQY | 功能描述:马达/运动/点火控制器和驱动器 Gate Driver IC 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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