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參數(shù)資料
| 型號(hào)： | AS8410 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | PWM DC Motor Regulator |
| 中文描述： | BRUSH DC MOTOR CONTROLLER, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁(yè)數(shù)： | 16/19頁(yè) |
| 文件大?。?/td> | 601K |
| 代理商： | AS8410 |
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PWM DC Motor Regulator – Data Sheet
AS8410
Rev. 1.0, December 2000
page
16
of
19
4.1.6
Oscillator, Reference Voltage / Current Generator
The oscillator is used to control the PWM generator and the charge pump with a frequency of
typical 18 kHz.
The reference current I
ref
of this oscillator is generated by a temperature compensated voltage
regulator which delivers a stable voltage of 1 V at pin
OSC
, the R
OSC
= 100 k
at this pin gen-
erates the reference current. This reference current is used for other functions of this chip too
(see section 3).
Symbol
V
OSC
f
OSC
T
rise/fall
I
ref
1
I
ref
must be generated by the external resistor R
OSC
= 100 k
at the pin
OSC
Parameter
min
0.96
17,0
typ
1.00
18,0
max
1.04
19,0
100
10,4
Unit
V
kHz
ns
μ
A
Note
Reference voltage at pin
OSC
Oscillator frequency
Rise or fall time of the clock
Reference current
9,6
10,0
1
4.1.7
5V Regulator (bandgap reference)
The 5V-regulator generates the supply voltage for all internal low voltage blocks and the rough
reference voltage for the 1 V-regulator to generate the reference current I
ref
. This regulated 5 V
supply can also be used externally (e.g. for the temperature sensor at pin
TP
).
This externally usable 5 V will be switched off in the sleep mode.
Symbol
Vbat
VDD
I
VDD_OUT
External load current at pin VDD
1
external capacitor to ground C
VDD
= 100 nF
Parameter
min
6,5
4,7
typ
12
5,0
max
35
5,3
3
Unit
V
V
mA
Note
Supply voltage of the regulator
Regulated voltage
1
4.1.8
Failures Detection, Failure Handling Procedures
Three different kinds of failure detections and protections are implemented:
1. Failure detection of the load circuit (DC motor and power FET)
1.1 Over current detection and protection
1.2 No load detection of the motor and protection
1.3 Open wire detection (motor or power switch)
1.4 Short circuit of the power switch detection
1.5 Blocked motor detection and protection
1.6 Short-circuited motor segments detection and protection
1.7 Protection of the power FET and the ASIC, if the motor works in generator mode
2. Failure detection of the supply voltage Vbat (Over- / Under Voltage)
3. Over Temperature detection and protection in two modes
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AS8412 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:HIGH PERFORMANCE AUTOMOTIVE SONAR INTRUSION |
| AS8413 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:HIGH PERFORMANCE AUTOMOTIVE SONAR INTRUSION |
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| AS8426-A | 制造商:Coilcraft Inc 功能描述:DSL transformer, for Alcatel MTK-20140, not RoHS |
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