- 您现在的位置：买卖IC网 > PDF目录97995 > L6238S013TR (STMICROELECTRONICS) BRUSHLESS DC MOTOR CONTROLLER, 5 A, PQCC44 PDF资料下载
参数资料
| 型号： | L6238S013TR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSHLESS DC MOTOR CONTROLLER, 5 A, PQCC44 |
| 封装： | PLASTIC, LCC-44 |
| 文件页数： | 5/31页 |
| 文件大小： | 3465K |
| 代理商： | L6238S013TR |
第1页第2页第3页第4页当前第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页
2) Closed Loop Start-Up - The Bemf voltage
zerocrossings provide timing information so that
the motor can be accelerated to steady state
speed.
3) Steady-State Operation - The Bemf voltage
zero-crossings provide timing information for pre-
cision speed control.
The L6238S contains features that offer flexible
control over the start-up procedure. Either the on-
board Auto-Start Algorithm can be used to control
the start-up sequence or more sophisticated ex-
tenal start-up algorithms can be developed using
the Serial Port and key control/sense functions
brought out to pins.
3.2 Auto-Start Algorithm
When initially powered up, the controller defaults
to the internal AutoStart Mode. When Run/Brake
is low, the L6238S is in brake mode, and the
Auto-Start Algorithm is reset. In the brake mode,
all of the lower DMOS drivers are ON, and the up-
per drivers are OFF.
The Auto-Start Algorithm is based on an Align &
Go approach and can be visualized by referring to
Figure 3-1. Shown are the Run/Brake control sig-
nals, sequencer function, and the three output
voltage waveforms.
Referring to figure 3-1, the following is the se-
quence of events during Auto-Start:
With Output Enable = 1, Run/Brake = 0
- State Machine is set to State 1 with the drivers
Trisatted.
Alignment Phase (1)
Run/Brake = 1
- Output Stage is sequenced to State 2 and the
drivers energized with OUTPUT A high and
OUTPUT C low for 64/Falign seconds.
Alignment Phase (2)
- Output Stage is double sequenced to State 4
with OUTPUT B high and OUTPUT A low for
STATE 2
A=HIGH
B=FLOAT
C=LOW
STATE 4
A=LOW
B=HIGH
C=FLOAT
STATE 6
A=FLOAT
B=LOW
C=HIGH
500ms/DIV
* FALIGN=90Hz
AOUT
1
10V
BOUT
2
10V
COUT
3
10V
ALIGNMENT
GO
DOUBLE INCREMENTS
*0.711s
*2.133s
RUN/BRAKE
SEQUENCER
D95IN314
Figure 3-1: Align+Go
L6238S
13/31
相关PDF资料 |
PDF描述 |
|---|---|
| L6246 | VOICE COIL MOTOR CONTROLLER, 3 A, PQFP44 |
| L6258EA | STEPPER MOTOR CONTROLLER, 2 A, PDSO36 |
| L6268 | VOICE COIL MOTOR CONTROLLER, 2.1 A, PQFP44 |
| L6269 | VOICE COIL MOTOR CONTROLLER, 2.1 A, PQFP44 |
| L6280 | STEPPER MOTOR CONTROLLER, 4.4 A, PQCC44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| L6238SQA | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:12V SENSORLESS SPINDLE MOTOR CONTROLLER |
| L6238SQT | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:12V SENSORLESS SPINDLE MOTOR CONTROLLER |
| L6239 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| L623C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|280V V(RRM)|46A I(T) |
| L623F | 制造商:未知厂家 制造商全称:未知厂家 功能描述:THYRISTOR MODULE|BRIDGE|HALF-CNTLD|CA|280V V(RRM)|46A I(T) |
发布紧急采购，3分钟左右您将得到回复。