A4931 datasheet 中文+总结
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A4931
3-Phase Brushless DC Motor Pre-Driver
三相无刷直流电机前置驱动器
4931-DS, Rev. 4
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翻译：2012-11-15
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A4931 三相无刷直流电机前置驱动器
Absolute Maximum Ratings
Thermal Characteristics
*For additional information, refer to the Allegro website.
Characteristic
Symbol
Notes Rating
Units
供电电压Load Supply Voltage V BB
38 V 电机输出Motor Phase Output S X t w < 500 ns –3 V 霍尔输入 V Hx DC
–0.3 to 7 V 逻辑输入电压范围 V IN
–0.3 to 7 V 工作环境温度 T A Range M
–20 to 105
ºC 最大结温度 T J (max) 150 ºC 储藏温度
T stg
–40 to 150
ºC
Characteristic
Symbol
Test Conditions*
Rating
Units
封装内阻，结点到外面（Junction to Ambient ）
R θJA 4-layer PCB based on JEDEC standard
32 ºC/W 封装内阻，结点到焊盘（Junction to Exposed Pad ）
R θJP
2
ºC/W
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A4931 三相无刷直流电机前置驱动器
Functional Block Diagram
Terminal List
0.1 μ
F
Number 1
Name HA+ Description Hall input A 2 HA - Hall input A 3 HB+ Hall input B 4 HB Hall input B 5 HC+ Hall input C 6 HC- Hall input C 7 GND Ground
8 HBIAS Hall bias power supply output 9 CP1 Charge pump capacitor terminal 10 CP2 Charge pump capacitor terminal 11 VBB Supply voltage
12 VCP Reservoir capacitor terminal 13 SENSE Sense resistor connection 14
GLC
Low side gate drive C
Number 15 Name GLB Description Low side gate drive B 16 GLA Low side gate drive A 17 GHC High side gate drive C
18 SC High side source connection C 19 GHB High side gate drive B
20 SB High side source connection B 21 GHA High side gate drive A
22 SA High side source connection A 23 FG1 FG 1 speed control output (3 Φ inputs)
24 FG2 FG 2 speed control output (ΦA input) 25 CLD Locked rotor detect timing capacitor 26 DIR Logic input – motor direction
27 ENABLE Logic input – external PWM control 28
BRAKEZ
Logic input – motor brake (active low)
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A4931 三相无刷直流电机前置驱动器
ELECTRICAL CHARACTERISTICS *
Valid at T A
= 25°C, V BB
= 24 V, unless noted otherwise
*Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions. Performance may vary for individual
units, within the specified maximum and minimum limits. For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin. Specifications throughout the allowed operating temperature range are guaranteed by design and characterization.