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参数资料
| 型号： | A4931MET-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC DC MOTOR PREDRIVER 3PH 28QFN |
| 标准包装： | 73 |
| 应用： | DC 电机驱动器，无刷（BLDC），3 相 |
| 输出数： | 1 |
| 电源电压： | 8 V ~ 33 V |
| 工作温度： | -20°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VFQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN/MLP 裸露焊盘（5x5） |
| 包装： | 托盘 |
A4931
3-Phase Brushless DC Motor Pre-Driver
Features and Benefits
? Drives 6 N-channel MOSFETs
? Synchronous rectification for low power dissipation
? Internal UVLO and thermal shutdown circuitry
? Hall element inputs
? PWM current limiting
? Dead time protection
? FG outputs
? Standby mode
? Lock detect protection
? Overvoltage protection
Package: 28-contact QFN (ET package)
Approximate Scale 1:1
Description
The A4931 is a complete 3-phase brushless DC motor pre-driver.
The device is capable of driving a wide range of N-channel
power MOSFETs and can support motor supply voltages up to
30 V. Commutation logic is determined by three Hall-element
inputs spaced at 120°.
Other features include fixed off-time pulse width modulation
(PWM) current control for limiting inrush current, locked-rotor
protection with adjustable delay, thermal shutdown, overvoltage
monitor, and synchronous rectification. Internal synchronous
rectification reduces power dissipation by turning on the
appropriate MOSFETs during current decay, thus shorting
the body diode with the low R DS(on) MOSFET. Overvoltage
protection disables synchronous rectification when the motor
pumps the supply voltage beyond the overvoltage threshold
during current recirculation.
The A4931 offers enable, direction, and brake inputs that can
control current using either phase or enable chopping. Logic
outputs FG1 and FG2 can be used to accurately measure motor
rotation. Output signals toggle state during Hall transitions,
providing an accurate speed output to a microcontroller or
speed control circuit.
Operating temperature range is –20°C to 105°C. The A4931
is supplied in a 5 mm × 5 mm, 28-terminal QFN package with
exposed thermal pad. This small footprint package is lead (Pb)
free with 100% matte tin leadframe plating.
Typical Application
0.1 μ F
0.1 μ F
0.1 μ F 2 k Ω
0.1 μ F
V IN
CLD HBIAS
CP1
CP2 VCP VBB
V IN
GHA
FG1
SA
System
Control
Logic
FG2
BRAKEZ
A4931
GLA
GHB
SB
M
ENABLE
DIR
GLB
GHC
SC
GLC
SENSE
GND HA+ HA– HB+ HB– HC+ HC–
4931-DS, Rev. 6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A4931METTR-T | 功能描述:IC DC MOTOR PREDRIVER 3PH 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电机和风扇控制器，驱动器 系列:- 标准包装:1 系列:- 应用:步进电机驱动器，1-2 相，2 相 评估套件:- 输出数:1 电流 - 输出:800mA 电压 - 负载:10 V ~ 28 V 电源电压:4.75 V ~ 5.25 V 工作温度:-20°C ~ 90°C 安装类型:表面贴装 封装/外壳:28-SOP + 2 翼片裸露焊盘 供应商设备封装:28-HSOPHC（15.2x7.9） 包装:剪切带 (CT) 其它名称:869-1268-1 |
| A4931METTR-T | 制造商:Allegro MicroSystems 功能描述:IC MOTOR PRE-DRIVER FULL BRIDGE QFN28 |
| A49323-000 | 制造商:TE Connectivity 功能描述:CTC-0015-22-9/5-9CS3182 - Cable Rools/Shrink Tubing 制造商:TE Connectivity 功能描述:Thermocouple Extension Cable 2Conductors 22AWG 3.6mm |
| A4933 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A4933 is a 3-phase controller for use with N-channel external power MOSFETs and is specifically designed for automotive applications. |
| A4933KJPTR-T | 功能描述:IC PREDRIVER MOSFET 3PH 48LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:5 系列:- 配置:低端 输入类型:非反相 延迟时间:600ns 电流 - 峰:12A 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:- 电源电压:14.2 V ~ 15.8 V 工作温度:-20°C ~ 60°C 安装类型:通孔 封装/外壳:21-SIP 模块 供应商设备封装:模块 包装:散装 配用:BG2A-NF-ND - KIT DEV BOARD FOR IGBT 其它名称:835-1063 |
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