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參數(shù)資料
| 型號： | E910.40 |
| 廠商： | ELMOS SEMICONDUCTOR AG |
| 英文描述： | Sensorless position control of DC-motors |
| 中文描述： | 位置傳感器控制的直流電動機(jī) |
| 文件頁數(shù)： | 1/1頁 |
| 文件大小： | 96K |
| 代理商： | E910.40 |
BUS IC
DC/DC CONVERTER
MOTOR DRIVER IC
RIPPLE COUNTER
46
BLOCK DIAGRAM
Position control
Position control + driver
Speed control
Ripple detection
Sensorless position control of DC-motors
FEATURES
Supply voltage range VDD
9
V to
16
V
Full motor control and diagnosis
Driving a four N-channel-power-MOSFET full bridge
Pulse width modulation with
8
bit resolution for
high side drivers
Drive frequency
23
kHz
Reduced current peaks during motor start
and acceleration
Active motor braking
Motor position determined by sensing motor
current fluctuations
Shortcircuit and overvoltage protected outputs
One pin microprocessor interface with
automatic baud rate recognition
Motor turned off automatically
200
ms after the
last valid transmission
Low standby current (typ. <
200
μA)
–
40
°C to +
125
°C operating temperature
SO
20
w package
APPLICATION
Seat adjustment
Steering column adjustment
Fuel pump
DESCRIPTION
The IC enables a μC to track the position of a DC-motor by count-
ing its current ripples. The ripple signal is available on an output
pin to connect controllers or dedicated logic. With the bidirec-
tional interface the actual position can be read out and IC param-
eters can be changed. Main parameters are motor direction and
PWM to control high side drivers. The IC can be adapted to differ-
ent motor characteristics by changing the RC-filter on ODIF, IDIF,
OLP and the voltage divider on BRTH.
VBAT
VCC
RB
VREF
BRTH
SENSE 2
SENSE 1
VGL 2
VGL 1
OLP
IDIF
ODIF
VGH 1
VGH 2
RSR
BSI
VSA
VREF
μC
TEMP
DATA
IMPOUT
VDD
M
BIAS
VDD Reg
Control
slewrate
controlled
FET
Driver
Short
Circuit
Detect
AVDD
VREF
Incr.
Detect
S/H
Filter & Amplifier
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