參數資料
型號： AS8846
廠商： AUSTRIAMICROSYSTEMS AG
元件分類： 基準電壓源/電流源
英文描述： Programmable PWM DC Motor Driver / Controller
中文描述： 可編程的PWM直流電動機驅動器/控制器
文件頁數： 1/35頁
文件大?。?/td> 1433K
代理商： AS8846
Data Sheet AS8446
Revision 1.8, Date 2005-03-17
Page 1 of 35
Vbat
M
R
A
TP
Wake-up
Vbat
VSS
Iref
VDDctrl
VDD
CP2
CP1
Vpump
OUT
CS
CMP
DATAout
CMN
FAIL
PWM
25
26
24
23
22
21
20
19
18
17
16
CLK
DATAin
Test1
Test2
27
28
RESET
1
D1
Cbat
Tr1
CP12
CP0
VDD = 5 V
C
Rref
R
NTC
R
T1
M+
M-
GND_P
Power part
Control part
W
15
2
3
4
5
6
7
8
9
10
11
12
13
14
VMO
ADC
WD
μP
OSC1
OSC2
PWMout
VDD
GND
Port1
(Q1
Test3
n.c.
CLK
CS
INR
ANA
Port2
SPIout
SPIin
RESET
Tout
GND_P
VSS
Key Features
-
Programmable PWM DC Motor Driver / Controller with μP
Interface (Three Wire Interface)
Programmable Functions and Parameters for Motor
Current, Voltage and Speed Regulation
Single Voltage Supply in the range
Vbat = 6.0 V to 18 V (Vbat,max = 30 V)
1
Total Power Efficiency up to 96 %
Low RF Emission within the whole frequency range due to
an integrated special EMC optimized driver
Dynamically self-adjusting slew rate regulated switching
technology
Fully protected by programmable failure handling
procedures via μP
Fast Over Current and Over / Under Voltage Detection
and Protection, Battery Voltage Monitoring
External and On Chip Temperature Detection and
Protection
Motor Current and Speed Measurement with a shunt
resistor and capability of trimming the chip for an external
shunt value
Programmable Parameters:
EMC compliant Driver Functions
Over Current, Over / Under Voltage
Threshold Values
Motor Failure Threshold Levels
Motor Current Measurement Range
Trimming for the current measurement shunt
PWM Frequency, Charge Pump Monitor
Charge Pump to control high side drivers
Integrated 5 V Power Supply for external components
(μP, etc.)
Standby and Wake-up capability
Sleep / Wake-up Mode system controlled by the
μ
P and
the Wake-up Pin
SOIC 28 Package
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
General Description
The AS8446 is a complete and fully protected PWM DC motor
driver/controller, which can be implemented by interfacing a
low cost 8-bit
μ
P and a high-side N-channel power FET
switch.
1
Low-Batttery-mode between 6.0 V and 6.5 V
It is an advanced PWM DC motor controller subsystem with
an excellent EMC behavior targeted especially for high
current automotive applications. The optimization of the EMC
behavior of the entire module only by software changes
makes it easier to implement it in harsh environments.
The programmability of parameters and functions allows the
adaptation of the AS8446 to a wide range of applications.
So the system can act either as a motor current or motor
speed or motor voltage regulator. Also a full diagnosis of
motor failures and power FET failures, over temperature and
over/under voltage can be formed by programmable failure
handling procedures using the motor characteristic and the
real time measured motor current, motor speed and battery
voltage.
Applications
-
-
-
-
-
Fan cooler
Air conditioning
Fuel pumps
Water and oil pumps
General purpose DC Motor Regulators
Typical Application Diagram
AS 8446
Programmable PWM DC Motor Driver / Controller
DATA SHEET
相關PDF資料
PDF描述
AS8F128K32 128K x 32 FLASH FLASH MEMORY ARRAY
AS9C25128M2036L-166PI 2.5V 256/128K X 36 Synchronous Dual-port SRAM with 3.3V or 2.5V interface
AS9C25256M2036L-200BC 2.5V 256/128K X 36 Synchronous Dual-port SRAM with 3.3V or 2.5V interface
AS9C25128M2036L-200BC 2.5V 256/128K X 36 Synchronous Dual-port SRAM with 3.3V or 2.5V interface
AS9C25256M2036L-200BI 2.5V 256/128K X 36 Synchronous Dual-port SRAM with 3.3V or 2.5V interface
相關代理商/技術參數
參數描述
AS8857-01-49K9F/TE 制造商:Vishay Intertechnologies 功能描述:CRCW080549K9FKTA
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AS8857-02-3K65F/TE 制造商:Vishay Angstrohm 功能描述:CRCW08053K65FKEA
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