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E910.94 参数 Datasheet PDF下载

E910.94图片预览
型号: E910.94
PDF下载: 下载PDF文件 查看货源
内容描述: 直流电动机的无传感器速度控制 [Sensorless speed control of DC-motors]
分类和应用: 传感器
文件页数/大小: 1 页 / 129 K
品牌: ELMOS [ ELMOS SEMICONDUCTOR AG ]
   
BUS IC
DC/DC CONVERTER
MOTOR DRIVER IC
RIPPLE COUNTER
Position control
Position control + driver
ÿ
Speed control
Ripple detection
DRIVER IC
I/O IC
SENSOR IC
SENSOR INTERFACE IC
ÿ
Sensorless speed control of DC-motors
FEATURES
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Supply voltage range VDD
7V
to
16V
Low standby current typ.
40µA
Speed regulation using the ripple signal of
motor current
Evaluation of commutation ripple signal
Fully protected half bridge
(slew rate, gate voltage and temperature)
Overlap free PWM actuation for external
power MOS half bridge
Internal charge pump for
100%
actuation
Adjustable maximum motor voltage
Conditioning of motor current for external
µP and ADC
Watch dog with emergency function depending
on the Kl.
15
signal
CRASH input for emergency shutoff of pump
STATUS output for failure analysis
Over voltage shutdown
Over temperature shutdown
40°C
to +
125°C
operating temperature
SO
24w
package
APPLICATION
ÿ
ÿ
ÿ
Fuel and hydraulic pumps regulator
Fan regulator
Speed regulator
The CRASH signal immediately stops the motor in case of an error.
An over-temperature driver shut down is provided with appropri-
ate TEMPFET transistors. With an integrated power supply and
watch dog, an emergency function with maximum motor drive
can be realized in case the µC fails.
The nominal motor voltage, provided by the µC is converted into a
20kHz
PWM signal used to drive the power MOS half bridge. Duty
cycle of
100%
is possible due to an implemented charge pump.
DESCRIPTION
The IC is designed to control the speed of DC-motors. In order
to determine the motor speed the commutation-related ripple
of the motor current is evaluated and converted to a
5V
digital
signal for the µC. The filtered motor current is also buffered and
provided to the µC’s ADC. Many types of motors can be adapted
with appropriate filter design.
PINNING
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
BLOCK DIAGRAM
VCC
E910.94
PACKAGE
Name
CRASH
BPO
VCRL
OUTC
INNC
SHUNT
VDD
GND
KL15
LS
VMOT
LSOT
HSOT
VBS
HS
VDD2
PROG1
PROG2
RIPOUT
PWM
PWMLP
CT
RT
STATUS
Description
Digital input crash signal
Bandpass output
VCO control voltage
Current amplifier output
Current amplifier, inverting input
Current amplifier, non-inverting input
5
V voltage control output
Ground
Signal input Kl.
15
Gate output for low side driver
Input motor voltage
Over voltage control of low side driver
Over voltage control of high side driver
I/O for bootstrap voltage
Gate output for high side driver
Positive supply voltage, battery voltage
Programming of filter gain
Programming of filter gain
Digital output ripple signal
PWM input motor target value
Pin for PWM lowpass capacitor
Timing capacitor for VCO
Timing resistor for VCO
Digital output for status signal
CRASH
BPO
VCRL
OUTC
INNC
SHUNT
VDD
GND
KL15
LS
VMOT
LSOT
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
STATUS
RT
CT
PWMLP
PWM
RIPOUT
PROG2
PROG1
VDD2
HS
VBS
HSOT
VBAT
VS
VDD
VDD
VREG
7V
HS
HSHOT
CRASH
STATUS
KL15
Ctrl.
Slewrate
controlled
BS
VDD
LS
WDOG
FET
Driver
M
PWM
µC
PWMLP
PWM Gen
5k / 20kHz
LSHOT
VHOT
R3
R4
PROG1
PROG2
RIPOUT
BPO
Filter
&
VCO
SHUNT
INNC
R1
RSHUNT
+
_
RT
CT
VCLR
OUTC
R2
Note
ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any
circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication
has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of
the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications.
Copyright ©
2005
ELMOS
Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.
www.elmos.de | sales@elmos.de
50
elmos product catalog june
2005
51