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参数资料
| 型号： | 8905 |
| 厂商： | Allegro MicroSystems, Inc. |
| 英文描述： | 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING |
| 中文描述： | 3相无刷直流电动机控制器/驱动器，反电动势遥感 |
| 文件页数： | 5/12页 |
| 文件大小： | 163K |
| 代理商： | 8905 |
8905
3-PHASE BRUSHLESS DC
MOTOR CONTROLLER/DRIVER
TERMINAL FUNCTIONS
Term.
Terminal Name
Function
1
LOAD SUPPLY
V
BB
; the 5 V or 12 V motor supply.
2
C
D2
One of two capacitors used to generate the ideal commutation points from the back-EMF
zero-crossing points.
3
C
WD
Timing capacitor used by the watchdog circuit to disable the back-EMF comparators
during commutation transients, and to detect incorrect motor position.
4
C
ST
Startup oscillator timing capacitor.
5
OUT
A
Power amplifier output A to motor.
6-7
GROUND
Power and logic ground and thermal heat sink.
8
OUT
B
Power amplifier output B to motor.
9
OUT
C
Power amplifier output C to motor.
10
CENTERTAP
Motor centertap connection for back-EMF detection circuitry.
11
BRAKE
Active low turns ON all three sink drivers shorting the motor windings to ground. External
capacitor and resistor at B
RAKE
provide brake delay. The brake function can also be
controlled via the serial port.
12
C
RES
External reservoir capacitor used to hold charge to drive the source drivers’ gates. Also
provides power for brake circuit.
13
FILTER
Analog voltage input to control motor current. Also, compensation node for internal speed
control loop.
14
INDEX
External tachometer input.
15
LOGIC SUPPLY
V
DD
; the 5 V logic supply.
16
OSCILLATOR
Clock input for the speed reference counter. Typical max. frequency is 10 MHz.
17
DATA OUT
Thermal shutdown indicator, FCOM, TACH, or SYNC signals available in real time,
controlled by 2-bit multiplexer in serial port.
18-19
GROUND
Power and logic ground and thermal heat sink.
20
RESET
When pulled low forces the chip into sleep mode; clears all serial port bits.
21
CHIP SELECT
Strobe input (active low) for data word.
22
CLOCK
Clock input for serial port.
23
DATA IN
Sequential data input for the serial port.
24
C
D1
One of two capacitors used to generate the ideal commutation points from the back-EMF
zero-crossing points.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 8905.2 | 功能描述:工业继电器 RMH1B High Current RelayModule, 5VDC, SPDT, 1Ch RoHS:否 制造商:TE Connectivity / Kilovac 触点形式:1 Form A (SPST-NO) 触点电流额定值: 线圈电压:9 VDC to 36 VDC 线圈电阻:38 Ohms 线圈电流: 切换电压: 安装风格:Panel 触点材料:Silver Palladium |
| 8905.3 | 功能描述:工业继电器 RMH4B, High Current RelayModule, 5VDC, SPDT, 4Ch RoHS:否 制造商:TE Connectivity / Kilovac 触点形式:1 Form A (SPST-NO) 触点电流额定值: 线圈电压:9 VDC to 36 VDC 线圈电阻:38 Ohms 线圈电流: 切换电压: 安装风格:Panel 触点材料:Silver Palladium |
| 89-050 | 制造商:Ideal Industries Inc 功能描述:RG6 BNC PLENM COMPR CONN |
| 8905-0.5" X 0.5"-1000 | 功能描述:3M 8905 POLYESTER TAPE - 0.5" X 制造商:3m (tc) 系列:8905 零件状态:在售 标准包装:1 |
| 8905-0.5" X 0.75"-1000 | 功能描述:3M 8905 POLYESTER TAPE - 0.5" X 制造商:3m (tc) 系列:8905 零件状态:在售 标准包装:1 |
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