U690B [TEMIC]
Rear Wiper Interval/Wipe-Wash Control; 后雨刷间隔/擦拭，清洗控制
| 型号： | U690B |
| 厂家： | 
TEMIC SEMICONDUCTORS |
| 描述： | Rear Wiper Interval/Wipe-Wash Control |
| 文件： | 总9页 (文件大小：104K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
U690B
Rear Wiper Interval/Wipe-Wash Control
Description
The bipolar integrated circuit, U690B, is designed with a operation i.e., intermittent or wipe/ wash; therefore, only
time coded input for the rear pane wiper application. The one signal line is sufficient from the input switch to the
length of the input signal determines the mode of electronic module.
Features
Time controlled interval/ wipe-wash
Wiper arm’s park position control
Interval pause typ. 7 s
Debounced main signal input
Power-on reset by low-voltage identification
Protection according to ISO / TR 7637–1 (VDE 0839)
Load-dump protection
Dry wiping time typ. 4.4 s
Multipurpose frequency comparator
Relay driver with Z-diode
Applications
RC-oscillator determines switching characteristics
Speed or R.P.M. detection
Ordering Information
Extended Type Number
U690B
Package
DIP8
Remarks
Pin Configuration
Pin
1
Symbol
GND
Function
1
2
3
4
8
7
6
5
GND
V
stab
Ground
2
Output Relay control output
Input Signal input
Hyst
Output
3
4
Retrigger Retrigger
5
Program Program input
Input
OSC
6
OSC
Hyst
RC-oscillator
7
Hysteresis output
Supply voltage 7.3 V
Retrigger
Program
8
V
stab
94 9328
Figure 4. Pinning
TELEFUNKEN Semiconductors
1 (9)
Rev. A2, 28-Apr-97
U690B
Block Diagram
C
1
10 nF
47
F
C
2
R
2
15
R
1
360 k
1 k
V
Batt
V
OSC
Hyst
7
8
stab
6
Stabilization
Power-on-Reset
Load-dump detection
1
Oscillator
GND
53
V
Batt
15
Frequency comparator
R
4
180 k
2
Debouncing
Relay output
Logic
Wiper
motor
Relay
output
94 9297
Signal
input
Program
input
Retrigger
input
3
4
5
L
130 k
R
3
C
R
5
R
6
5
Water
pump
56 k
1 k
1 nF
Figure 1. Application circuit for rear wiper interval/wipe-wash control
Functional Description
1 k
R
15
Power Supply, Pin 8
47 F/10 V
1
5
For reasons of interference protection and surge immu-
nity, the supply voltage (Pin 8) must be provided with an
RC-circuit as shown in figure 2. Dropper resistor, R , lim-
its the current in case of overvoltage, whereas C
smoothes the supply voltage at Pin 8.
R
C
2
2
C
1
1
6
7
8
1
1
U690B
Relay
Recommended values are: R = 1 k , C = 47 F.
1
1
An integratd Z-diode (7.3 V) generates the stabilized
voltage, V , therefore, the operation of the IC is
4
2
3
stab
94 8868
possible between 6 V and 16 V, supplied by V
(Terminal 15).
Batt
Figure 2. Basic circuitry
Rev. A2, 28-Apr-97
U690B
nected at terminal L and the wiper motor is connected at
terminal 53, as shown in figure 1.
Interference Voltages and Load-Dump,
Pins 3 and 4
Figure 4 shows three different modes of operation. The
Pin 3 (signal input) and Pin 4 (retrigger input) are pro-
tected against short interference peaks via the integrated
Z-diodes and external series resistance.
input signal pulse width, t , (see figure 1, terminal L)
p
determines the operation mode, with an assumed
oscillator frequency of f = 400 Hz. Pin 5 and Pin 7 are
Relay Control Output, Pin 2
open. As a debouncing measure, input pulses of t less
p
than 50 ms do not activate the relay.
The relay control output is an open collector Darlington
circuit with an integrated 21-V Z-diode for limitation of
the inductive cut-off pulse of the relay coil. The maxi-
mum static collector current must not exceed 200 mA and
the saturation voltage is typically 1.0 V @ 100 mA,
Further explanation is given with typical values. For
detailed information, please refer to table 1.
–
Interval mode: 50 ms
t
p
610 ms
whereas the typical resistive load is 80
.
Pin 2 (relay control output) is activated for
640 ms,
+
where the interval pause, t , is approximately 7 s.
3
21 V
Pin 2
–
–
Wipe/wash mode: t
Dry wiping time is 4.4 s after the negative edge
610 ms
p
of t .
p
Wipe/wash mode with retrigger
94 8869
Retriggering for Large Park Segment
Figure 3. Relay control output
After dry wiping, the slip ring contact cuts off the supply
of the wiper motor and stops the wiper in its parking
position.
Oscillator, Pin 6
Oscillator frequency, f, is determined mainly by the R C
2
2
circuit. The resistance, R , determines the charge time,
and the integrated resistance (2 k ) is responsible for dis-
charge time. For the stability of the oscillator frequency,
2
However due to mechanical tolerances, the contact may
pass over the park segment so that the wiper is switched
off by the relay. The wiper arm then stops at an undefined
position on the screen.
it is recommended that the selected R value be much
2
greater than the internal resistance (2 k ), because the
temperature response and the tolerances of the integrated
resistance are considerably greater than the external
resistance value.
By retriggering the U690B prevents the wiper arm from
stopping anywhere other than its parking position. The
voltage of the relay contact is fed back to the retrigger
input which detects the negative switch off pulse (see
figure 4) and reactivates the wiper motor immediately for
approximately 640 ms. After another turn, the wiper is
switched off correctly via the slip ring contact.
Oscillator frequency, f, is calculated as follows:
f = 1/C (0.632 R + 1900)
2
2
Minimum value for R = 68 k
2
Maximum oscillator frequency is 20 kHz.
For further information, please refer to table 1, regarding
relationship between oscillator frequency and different
timings.
The interval mode can be activated during the dry wiping
time, but the retriggering mode is switched-off during this
time.
Rear Wiper Interval/Wipe-Wash Control,
Figures 1 and 4
A single high-side switch at terminal L is responsible for
all switching sequences. The water pump motor is con-
TELEFUNKEN Semiconductors
3 (9)
Rev. A2, 28-Apr-97
U690B
Interval mode
ON
OFF
tp
Pin 3
Pin 4
tp
Pin 2
t1
t2
t4
t1
t2
t3
Wipe / wash mode
Pin 3
Pin 4
tp
Pin 2
t1
t5
Wipe / wash mode with retrigger
tp
t6
Pin 3
Pin 4
Pin 2
t1
t2
t5
94 8870
tp: Operating time
t1: Debounce time
t2: Relay active
t3: Interval time
t4: Interval pulse
t5: Dry wiping time
t6: Retrigger
Figure 4. Pulse diagram for different modes – wipe/wash
Rev. A2, 28-Apr-97
U690B
Table 1. Time for rear wiper interval operation
Index t
Description
Oscillator Clocks
1
2
3
4
5
6
7
8
9
Interval ON (first pulse)
252
256
Interval ON (following pulses)
Interval pause (except first pause)
Pause (dry wiping interval pulse)
Dry wiping time min/max
2816
1024
1738/1810
8
Gate for retrigger
Min/max lengthening at retrigger
Debounce time min/max
248/256
16/24
240/248
Recognition time for dry wiping min/max
fosc
1
2
3
4
5min
5max
(s)
6
7min
7max
(ms)
8min
8max
(ms)
9min
9max
(ms)
(ms)
840
(ms)
853
(s)
(s)
(ms)
27
(Hz)
300
9.387
3.410
5.790
6.030
5.603
5.835
5.428
5.653
827
853
800
826
775
800
53
80
52
77
50
75
800
827
774
800
750
775
310
320
813
788
826
800
9.084
8.800
3.300
3.197
26
25
330
340
350
764
741
720
776
753
731
8.533
8.282
8.064
3.100
3.009
2.923
5.264
5.482
5.109
5.321
4.963
5.169
24
24
23
752
776
729
753
709
731
48
73
47
71
46
69
727
752
706
729
686
709
360
370
380
700
681
663
711
692
674
7.822
7.611
7.411
2.842
2.765
2.692
4.825
5.025
4.695
4.889
4.571
4.761
22
22
21
689
711
670
692
653
674
44
67
43
65
42
63
667
689
649
670
632
653
390
400
410
646
630
615
656
640
624
7.221
7.040
6.868
2.623
2.558
2.495
4.454
4.638
4.343
4.523
4.237
4.412
21
20
20
636
656
620
640
605
624
41
62
40
60
39
59
615
636
600
620
585
605
420
430
440
600
586
573
610
595
582
6.705
6.549
6.400
2.436
2.379
2.325
4.136
4.307
4.040
4.207
3.948
4.111
19
19
18
590
610
577
595
564
582
38
57
37
56
36
55
571
590
558
577
545
564
450
460
470
560
548
536
569
557
545
6.258
6.122
5.991
2.273
2.224
2.177
3.860
4.020
3.776
3.933
3.696
3.849
18
17
17
551
569
539
557
528
545
36
53
35
52
34
51
533
551
522
539
511
528
480
490
500
525
514
504
533
522
512
5.867
5.747
5.632
2.131
2.088
2.046
3.619
3.769
3.545
3.692
3.474
3.618
17
16
16
517
533
506
522
496
512
33
50
33
49
32
48
500
517
490
506
480
496
TELEFUNKEN Semiconductors
5 (9)
Rev. A2, 28-Apr-97
U690B
Absolute Maximum Ratings
Reference point Pin 1 ( 31), unless otherwise specified
Parameters
Operating voltage, static 5 min., Terminal 15
Ambient temperature range
Symbol
Value
24
Unit
V
V
Batt
T
amb
–40 to +95
–55 to +125
150
°C
°C
°C
Storage temperature range
T
stg
Junction temperature
T
j
Thermal Resistance
Parameters
Symbol
Value
110
Unit
K/W
Junction ambient
DIP 8
R
thJA
Electrical Characteristics
Reference point Ground (Pin 1), T
= 25 C, V
= 12 V, unless otherwise specified, see basic circuitry figure 2
amb
Batt
Parameters
Operating voltage
Test Conditions / Pin
1 k
t < 5 min
Symbol
Min
6.0
Typ
Max
Unit
V
R
1
V
Batt
16.0
24.0
18.0
t < 60 min
Stabilized voltage
I = 10 mA
Terminal 15
Pin 8
Pin 2
V
7.35
4.5
V
V
8
8
Low voltage detection
Relay control output
Saturation voltage
V
Batt
4.0
5.0
I ≤ 200 mA
I ≤ 100 mA
I = 10 mA
2
V
2
1.5
1.2
23
V
V
Internal Z-diode
Oscillator f = 0.001 to 20 kHz
Pin 2
Pin 6
V
20
21
z
Integrated discharge
resistor
V = V
r
6
1.6
2.0
2.4
k
6
8
Switching threshold voltage lower
upper
V
V
1.8
4.6
V
6L
6H
Input current
V = 0 V
–I
–I
1
200
200
A
A
mV
6
6
7
Hysteresis current
Saturation voltage
Programming input
Pull-up resistor
Temperature drift of r
Switching threshold voltage
Signal input,
Pin 7
Pin 7
Pin 5
I7 = –l00 A
V
7–8
100
r
40
50
0.45
2
60
k
5
TC
V
5
%/deg.
V
5
R = 1 k (min), fig.1, Pin 3
3
Input current
Threshold voltage
V = 2 V
ON
OFF
– I
0.5
2.3
1.8
A
V
3
3
V
3
2.1
1.6
Internal Z-diode
I = 10 mA
I = –10 mA
3
V
–V
7.5
0.7
V
3
3
3
Retrigger
R = 1 k (min), fig. 1, Pin 4
4
Threshold voltage
ON
OFF
V
V
2.1
1.6
2.3
1.8
V
V
4
Internal Z-diode
I = 10 mA
7.5
0.7
50
4
4
I = –10 mA
4
–V
4
Integrated pull-up resistor
r
40
60
k
4
Temperature drift of r
TC
0.45
%/deg.
4
Rev. A2, 28-Apr-97
U690B
Applications
Frequency Comparator
R
R
2
15
D
1
1
Speed Depending Switch with Hysteresis,
Figure 5
C
2
R
7
5
8
1
7
6
This circuit can be used to activate a load, such as a
warning lamp or buzzer via the relay (terminal A) at a
certain speed. The speed information is applied to signal
input, Pin 3, e.g. from Hall generator via terminal V.
R
8
C
1
U690B
Relay
A
It is compared in the integrated circuit with a reference
frequency created by the oscillator. The oscillator
2
3
4
frequency, f, is generated with external resistor, R R ,
2
7
D
2
V
and capacitor, C .
2
R
C
3
3
If the frequency at Pin 3 is less than f/64, the relay control
ouput is deactivated.
Z
31
1
94 8866
If the frequency at Pin 3 is greater than f/64, the relay
control output is activated and at the same time the
hysteresis output, Pin 7, is disabled, the frequency is
reduced. This means Pin 7 supplies no current for
charging the capacitor, C ; therefore, R and C alone
Figure 5. Speed switch
R
R
2
D
15
1
2
2
2
1
define the oscillator frequency i.e., f
R C .
2 2
C
2
R
The hysteresis frequency is determined with the resistor,
R .
7
7
8
1
7
6
5
4
Motor Speed Depending Switch with
Hysteresis, Figure 6
C
1
U 690 B
Relay
A
This circuit, figure 6, has the same function as the speed
with hysteresis mentioned above.
2
3
Information regarding motor speed (rpm) from the
ignition coil is delivered to signal input, Pin 3, via
1
terminal 1. Resistor values, R and R are so
R
3
3
5
R
5
dimensioned, that there is a peak voltage of nearly 3 V at
Pin 3 (from the ignition coil). Pin 4 is connected to GND,
so that there is a bypass for debouncing. In this way,
ignition pulse is supplied to frequency comparator.
31
94 8867
Figure 6. Motor speed switch with hysteresis
TELEFUNKEN Semiconductors
7 (9)
Rev. A2, 28-Apr-97
U690B
Package Information
Package DIP8
Dimensions in mm
7.82
7.42
9.9 max
1.64
1.44
4.5
3.9
6.4 max
2.5
0.5 min
0.39 max
0.58
0.48
9.75
8.15
2.54
7.62
8
5
technical drawings
according to DIN
specifications
13039
1
4
Rev. A2, 28-Apr-97
U690B
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
TELEFUNKEN Semiconductors
9 (9)
Rev. A2, 28-Apr-97
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