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| 型号： | A4934GLPTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 2/9页 |
| 文件大小： | 0K |
| 描述： | IC BLDC DVR 3PHASE 16-ETSSOP |
| 标准包装： | 1 |
| 应用： | 风扇电机驱动器，3 相 |
| 输出数： | 1 |
| 电流 - 输出： | 500mA |
| 电源电压： | 8 V ~ 16 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 供应商设备封装： | 16-TSSOP-EP |
| 包装： | 标准包装 |
| 其它名称： | 620-1382-6 |
A4934
Three-Phase Sensorless Fan Driver
Features and Benefits
? Sensorless (no Hall sensors required)
? Soft switching for reduced audible noise
? Minimal external components
? PWM speed input
? FG speed output
? Low power standby mode
? Lock detection
? Optional overcurrent protection
Package: 16-pin TSSOP with exposed
thermal pad (suffix LP)
Description
The A4934 three-phase motor driver incorporates BEMF
sensing to eliminate the requirement for Hall sensors in fan
applications.
A pulse wave modulated (PWM) input is provided to control
motor speed, allowing system cost savings by eliminating
external variable power supply. PWM input can also be used
as an on/off switch to disable motor operation and place the
IC into a low power standby mode.
The A4934 soft switching settings are designed for lower
inductance or lower speed motors. For higher inductance
or higher speed motors consider using the pin-compatible
A4941.
The A4934 is provided in a 16-pin TSSOP package (suffix LP)
with an exposed thermal pad. It is lead (Pb) free, with 100%
matte tin leadframe plating.
Not to scale
Functional Block Diagram
12 V
0.1 μ F
10 μ F
VBB
+V INT
VCP
0.1 μ F
CP1
Charge
Pump
CP2
SLEW
PWM
Soft
Switch
Control
Logic
3-Phase
Half Bridges
OUTA
OUTB
OUTC
M
25 kHz
V BB
OSC
Timers
OCP
SENSE
0.18 Ω
O/C
FC
TEST
Startup
OSC
Sequencer
(Direction)
GND
Adaptive
10 k Ω
FG
CDCOM
Commutation
Delay
FCOM
BEMF
Comp
OUTA
OUTB
CTAP
A4934-DS
OUTC
GND
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相关代理商/技术参数 |
参数描述 |
|---|---|
| A4935 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Automotive 3-Phase MOSFET Driver |
| A4935_12 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:The A4935 is a 3-phase controller for use with N-channel external power MOSFETs and is specifically designed for automotive applications. |
| A4935_13 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Automotive 3-Phase MOSFET Driver |
| A4935KJP-T | 功能描述:IC MOSFET DRIVER 3PH AUTO 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:50 系列:- 配置:高端 输入类型:非反相 延迟时间:200ns 电流 - 峰:250mA 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:600V 电源电压:12 V ~ 20 V 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-DIP 包装:管件 其它名称:*IR2127 |
| A4935KJPTR-T | 功能描述:IC MOSFET DVR AUTO 3PH 48-LQFP 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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