参数资料
型号: A4931MET-T
厂商: Allegro Microsystems Inc
文件页数: 3/9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
Functional Block Diagram
0.1 μ F
0.1 μ F
CLD
Lock
Detect
FG1
CHARGE PUMP
VCP
0.1 μ F
HBIAS
VREG
VBB
0.1 μ F
2 k Ω
HALL
HA+
HA-
OVP
V IN
HALL
HALL
HB+
HB-
HC+
HC-
Commun-
ication
Logic
Control
Logic
VCP
VREG
GATE
DRIVE
GHA
SA
GHB
SB
GLB
GHC
SC
GLC
FG1
FG2
GLA
BRAKEZ
SENSE
R SENSE
System
Logic
DIR
200 mV
ENABLE
V IN
GND
Terminal List
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Name
HA+
HA -
HB+
HB -
HC+
HC-
GND
HBIAS
CP1
CP2
VBB
VCP
SENSE
GLC
Description
Hall input A
Hall input A
Hall input B
Hall input B
Hall input C
Hall input C
Ground
Hall bias power supply output
Charge pump capacitor terminal
Charge pump capacitor terminal
Supply voltage
Reservoir capacitor terminal
Sense resistor connection
Low side gate drive C
Number
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Name
GLB
GLA
GHC
SC
GHB
SB
GHA
SA
FG1
FG2
CLD
DIR
ENABLE
BRAKEZ
Description
Low side gate drive B
Low side gate drive A
High side gate drive C
High side source connection C
High side gate drive B
High side source connection B
High side gate drive A
High side source connection A
FG 1 speed control output (3 Φ inputs)
FG 2 speed control output ( Φ A input)
Locked rotor detect timing capacitor
Logic input – motor direction
Logic input – external PWM control
Logic input – motor brake (active low)
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
3
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