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參數(shù)資料
| 型號： | E910.16 |
| 廠商： | ELMOS SEMICONDUCTOR AG |
| 英文描述： | Fan control |
| 中文描述： | 風(fēng)扇控制 |
| 文件頁數(shù)： | 1/1頁 |
| 文件大?。?/td> | 92K |
| 代理商： | E910.16 |
BUS IC
DC/DC CONVERTER
MOTOR DRIVER IC
RIPPLE COUNTER
38
BLOCK DIAGRAM
Fan control
EC motor control
Steppermotor driver
Fan control
FEATURES
Supply voltage range VS
7
.
2
V to
17
.
5
V
Overvoltage shut down
Low standby current (power down mode)
Limitation of power dissipation by voltage
dependent current limitation
Externally adjustable minimum current
Externally adjustable over temperature protection
featuring load current reduction
Control of current distribution in
2
parallel
power-FETs
Turn on the power-FETs during load-dump
–
40
°C to +
125
°C operating temperature
SO
16
w package
APPLICATION
Fan regulation
DESCRIPTION
The IC controls the voltage across a DC fan motor as a function of
the voltage applied to the control input “SOLL”. The IC delivers the
gate voltage for one or two (parallel) external power-FETs, which
linearly drive the load current of the motor. The drain currents of
the two external power-FETs are matched by measuring the volt-
ages across each individual shunt resistor.
Rapid changes in control voltage are converted into smooth mo-
tor current transients.
Overcurrent limitation is provided as a function of the motor volt-
age. Over temperature protection is realized as load current re-
duction to achieve a minimum torque of the motor even at the
temperature limit.
The sleep mode with very low standby current of typ.
50
μA will
be activated when the control voltage “SOLL” drops below a mini-
mum value, which can be adjusted externally.
VBAT
M
VBAT
IK
VDD
VSOLL
VS
VDD
SOLL
THREF
UTHON
TEMP
VDD
MOTH
MOTL
COMP
G1
G2
S1
S2
VDD
Regulator
Threshold
Limiter
Temp.
Limit
Short
Circuit
Current Set
Motor
control
Motor
Voltage
Sense
MOSFET
Driver
Current
Sense
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