U210B [TEMIC]
Phase Control Circuit - Load Current Feedback Applications; 相位控制电路 - 负载电流反馈应用
| 型号： | U210B |
| 厂家： | 
TEMIC SEMICONDUCTORS |
| 描述： | Phase Control Circuit - Load Current Feedback Applications |
| 文件： | 总15页 (文件大小：378K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
U 210 B / U 210 B–FP
TELEFUNKEN Semiconductors
Phase Control Circuit – Load Current Feedback Applications
Technology: Bipolar
Features
D Externally controlled integrated amplifier
D Variable soft start
D Automatic retriggering
D Triggering pulse typ. 125 mA
D Internal supply voltage monitoring
D Temperature constant reference source
D Current requirement ≤ 3 mA
D Voltage and current synchronisation
Case: DIP 14, SO 16
Figure 1 Block diagram
1
Preliminary Information
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
Figure 2 Block diagram with external circuitry
Open loop control with load current compensation
2
Preliminary Information
U 210 B / U 210 B–FP
TELEFUNKEN Semiconductors
Description
Mains supply
The U 210 B is fitted with voltage limiting and can therefore be supplied directly from the mains. The supply voltage
between Pin 2 (+pol/ă) and Pin 3 builds up across D and R and is smoothed by C . The vaIue of the series resistance
1
1
1
can be approximated using:
V –V
M
S
R =
1
2 I
S
Further information regarding the design of the mains supply can be found in the data sheets in the appendix. The reference
voltage source on Pin 13 of typ. –8.9 V is derived from the supply voltage. It represents the reference level of the control
unit. Operating using an externally stabiIised DC voltage is not recommended.
If the supply cannot be taken directly from the mains because the power dissipation in R would be too large, then the
1
circuit shown in the following Figure 3 should be employed.
Figure 3 Supply voltage for high current requirements
Phase control
The function of the phase control is largely identical to that of the well known components U 111 B and TEA 1007. The
phase angle of the trigger pulse is derived by comparing the ramp voltage, which is mains synchronised by the voltage
detector, with the set value on the control input Pin 9. The slope of the ramp is determined by C and its charging current.
2
The charging current can be varied using R on Pin 5. The maximum phase angle a
can also be adjusted using R .
2
max
2
When the potential on Pin 6 reaches the nominal value predetermined at Pin 9, then a trigger pulse is generated whose
width t is determined by the value of C (the value of C and hence the pulse width can be evaluated by assuming 8 ms/nF).
p
2
2
At the same time, a latch is set, so that as long as the automatic retriggering has not been activated, then no more pulses
can be generated in that half cycle.
The current sensor on Pin 1 ensures that, for operation with inductive loads, no pulse will be generated in a new half cycle
as long as current from the previous half cycle is still flowing in the opposite direction to the supply voltage at that instant.
This makes sure that ”Gaps” in the load current are prevented.
The control signal on Pin 9 can be in the range 0 V to –7 V (reference point Pin 2).
If V
= –7 V then the phase angle is at maximum = a
i .e. the current flow angle is a minimum. The minimum phase
max
pin9
angle a is when V
= V
.
min
pin9
pin2
Voltage monitoring
As the voltage is built up, uncontrolled output pulses are avoided by internal voltage surveillance. At the same time, all
of the latches in the circuit (phase control, soft start) are reset and the soft–start capacitor is short circuited. Used with
a switching hysteresis of 300 mV, this system guarantees defined start–up behaviour each time the supply voltage is
switched on or after short interruptions of the mains supply.
3
Preliminary Information
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
Soft–start
As soon as the supply voltage builds up (t ), the integrated soft–start is initiated. The figure below shows the behaviour
1
of the voltage across the soft–start capacitor and is identical with the voltage on the phase control input on Pin 9. This
behaviour allows a gentle start–up for the motor.
Figure 4 Soft–start
C is first charged with typ. 30 mA. The charging current then increases as the voltage across C increases giving a
3
4
progressively rising charging function with more and more strongly accelerates the motor with increasing rotational
speed. The charging function determines the acceleration up to the set point. The charging current can have a maximum
value of 85 mA.
Control amplifier
The integrated control amplifier with differential input has a bipolar current output, with typically ±110 mA at Pin 9 and
a transmittance of typ. 1000 mA/V. The amplification and frequency response are determined by external circuit. For
operation as a power control, it should be connected with Pin 7. Phase angle of the firing pulse can be adjusted by using
the voltage at Pin 8. An internal limiting circuit prevents the voltage on Pin 9 becoming more negative than V + 1 V.
13
Load current detection, Figure 2
Voltage drop across R , dependent of load current, generates an input–current at Pin 11 limited by R . Proportional output
8
5
current of 0.44 x I (CTR) is available at Pin 12. It is proportional with respect to phase and amplitude of load current.
11
Capacitor C integrates the current whereas resistor R evaluates it. The voltage obtained due to load current
3
7
proportionality, can be used according to the application i.e., load current compensation or load current regulation.
Pulse output stage
The pulse output stage is short circuit protected and can typically deliver currents of 125 mA. For the design of smaller
triggering currents, the function I = f (R ) has been given in the data sheets in the appendix. In contrast to the U 111 B
GT
GT
and the TEA 1007, the pulse output stage of the U 210 B has no gate bypass resistor.
Automatic retriggering
The automatic retriggering prevents half cycles without current flow, even if the triac is turned off earlier e.g. due to not
exactly centred collector (brush lifter) or in the event of unsuccessful triggering. After a time lapse of t =4.5 t is
pp
p
generated another triggering pulse which is repeated until either the triac fires or the half cycle finishes.
4
Preliminary Information
U 210 B / U 210 B–FP
TELEFUNKEN Semiconductors
General hints and explanation of terms
To ensure safe and trouble–free operation, the following points should be taken into consideration when circuits are being
constructed or in the design of printed boards.
D The connecting lines from C to Pin 6 and Pin 2 should
load current. When selecting C , a low temperature
coefficient is desirable.
2
2
be as short as possible, and the connection to Pin 2
should not carry any additional high current such as the
Figure 5 Explanation of terms in phase relationship
5
Preliminary Information
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
Absolute Maximum Ratings
Reference point Pin 2, unless otherwise specified
Parameters
Symbol
–I
Value
30
Unit
mA
mA
Current requirement
Pin 3
Pin 3
S
Peak current requirement t ≤ 10 ms
Synchronisation current
–i
s
100
Pin 1
Pin 14
Pin 1
–I
5
5
35
35
mA
mA
mA
mA
sync.I
–I
sync.V
t ≤ 10 ms
t ≤ 10 ms
–i
I
Pin 14
"i
v
Load current monitoring
Input current
Pin 11
Pin 11
–I
–I
2
5
mA
mA
I
t ≤ 10 ms
I
Phase control
Input voltage
Input current
Pin 9
–V
0 ... 7
V
I
Pin 9
Pin 5
"I
500
1
mA
mA
I
–I
I
Soft–start
Input voltage
Pulse output
Reverse voltage
Amplifier
Pin 10
Pin 4
–V
jV j ... 0
V
V
I
13
V
o
V ... 5
S
Input voltage
Pin 8
Pin 7
V
–V
0 ... V
S
jV j ... 0
13
I
V
I
Reference voltage source
Output current
Pin 13
I
7.5
mA
°C
o
Storage temperature range
Junction temperature
T
stg
–40 ... +125
125
T
°C
j
Ambient temperature range
T
amb
–10 ... +100
°C
Thermal Resistance
Parameters
Symbol
Maximum
Unit
Junction ambient
DIP 14
SO 16 on p.c.
SO 16 on ceramic
R
thJA
R
thJA
R
thJA
120
180
100
K/W
K/W
K/W
6
Preliminary Information
U 210 B / U 210 B–FP
TELEFUNKEN Semiconductors
Electrical Characteristics
–V = 13.0 V, T
= 25 °C, reference point Pin 2, unless otherwise specified
s
amb
Parameters
Test Conditions / Pin
Pin 3
Symbol
Min
13.0
Typ
Max
Unit
V
Supply voltage for mains
operations
–V
V
Limit
S
Supply voltage limitation
–I = 3 mA
–I = 30 mA
S
Pin 3
Pin 3
–V
–V
14.6
14.7
16.6
16.8
V
V
S
S
S
DC supply current
–V =13.0 V
Pin 3
–I
1.2
2.5
8.9
3.0
mA
S
S
Reference voltage source
–I = 10 mA
Pin 13
Pin 13
–V
–V
8.6
8.3
9.2
9.1
V
V
L
Ref
Ref
–I = 5 mA
L
Temperature coefficient
Voltage monitoring
Turn–on threshold
Pin 13 –TC
0.5
mV/K
VRef
Pin 3
Pin 3
–V
11.2
10.9
13.0
V
V
SON
Turn–off threshold
–V
9.9
SOFF
Phase control currents
Current synchronisation
Voltage synchronisation
Voltage limitation
Pin 1
I
0.35
0.35
3.5
3.5
mA
mA
sync.I
Pin 14
I
sync.V
±I = 5 mA
L
Pin 1
Pin 14
"V
"V
8.0
8.0
8.9
8.9
9.5
9.5
V
V
I
I
Reference ramp
Load current, Figure 6
I = f(R )
6 f
R = 1 K ... 820 KW Pin 6
I
1
20
mA
V
f
6
R –reference voltage
ö
a ≥ 180 °
Pin5,3
Pin 5
V
1.06
1.13
0.5
1.18
öRef
Temperature coefficient
Pulse output, Figure 12
Output pulse current
Reverse current
TC
mV/K
VöRef
R
GT
= 0, V =1.2 V Pin 4
I
o
100
125
150
3.0
mA
GT
Pin 4
I
0.01
mA
or
Output pulse width
C = 10 nF
ö
Pin4,2
Pin 4
t
80
ms
p
Automatic retriggering
Repetition rate
t
pp
3
4.5
6
t
p
Amplifier
Common mode voltage
range
Pin7,8
V
V
–1
1
V
7,8
13
Input bias current
Pin 8
I
0.01
10
mA
IB
Input offset voltage
Output current, Figure 9
Pin7,8
V
mV
IO
Pin 9
Pin 9
–I
+I
75
88
110
120
145
165
mA
mA
O
O
Short circuit forward trans-
mittance
I
= f(V
)
Pin 9
Y
f
1000
mA/V
12
10-11
7
Preliminary Information
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
Parameters
Soft-start, Figures 7, 8
Starting current
Test Conditions / Pin
Symbol
Min
Typ
Max
Unit
V
V
= V
Pin 10
Pin 10
Pin 10
I
o
20
50
30
85
3
50
130
10
mA
mA
mA
10
13
Final current
= –0.5 V
I
O
10
Discharge current, restart
pulse
–I
0.5
O
Load current detection, Figure 11
Input current voltage
V = 300 mV, R = 1 KW
I V
Pin 11
Pin 11
I
I
0
300
500
308
mA
mA
I
I
Input offset voltage
Output open current
Output current
Pin 11
V
–8
1
0
4
mV
IO
O
V = 0 V, R = 1 KW Pin 12
I
mA
I
V
V = 300 mV, R = 1 KW
I
V
V
12
= V
Pin 12
I
120
127
134
mA
13
O
Current transfer ratio
I
CTR
CTR
0.44 ± 5%
0.42 ± 6%
12
CTR =
I
11
I
I
= 150 mA
= 300 mA
Pin 12/11
Pin 12/11
12
12
0
Temperature coefficient of
current transfer ratio
Pin 12/11
TC
0.2
/ /K
00
8
Preliminary Information
U 210 B / U 210 B–FP
TELEFUNKEN Semiconductors
9
Preliminary Information
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
10
Preliminary Information
U 210 B / U 210 B–FP
TELEFUNKEN Semiconductors
Design calculations
The following equations can be used for the evaluation
of the series resistor R for worst case conditions:
1
V
– V
Mmin
Smax
R
= 0.9 @
1max
1min
2 I
tot
V
– V
Mmax
Smin
R
=
2 I
Smax
2
– V
Smin)
(V
Mmax
P (R
) =
1max
2 R
1
where:
V = Mains voltage 220 V
M
Vs = Supply voltage on Pin 4
I
= Total DC current requirement of the circuit
tot
= I
+ I + I
Smax
p x
I
I
I
= Current requirement of the IC in mA
Smax
= Average current requirement of the triggering pulses
= Current requirement of other peripheral components
p
x
R can be easily evaluated from Figures 12 – 14
1
11
Preliminary Information
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
Applications
In contrast to simple speed controller”, the circuits shown in Figures 15 and 16, react to the load dependent speed drop
in which the magnitude of the load current acts on the speed compensation.
For this purpose, the load current is measured by shunt resistor R . The voltage drop generates a current at Pin 11
8
dependent of R , which reflects in the specified current at the output of Pin 12.
5
Rated impedance of the output current at Pin 12 is represented through the coupling resistance R and the total impedance
7
of the set point.
The integrated load current proportional signal at C effects in the same direction on the control input as the set point i.e.,
3
by the increase of load current follows an automatic increase of manipulated set point, so that a compensation of speed
falls.
Compensation arrangement is influenced with resistance values i.e. R (= 100 ... 5 kW) and R (= 10 kW ... 150 kW)
5
7
whereas the higher effect is achieved by increasing the value of R and decreasing R . Influence of compensation can be
7
5
increased up to the value where the drive system (motor) starts to oscillate.
Dimensioning in the applications are with the drill machine of 700 W power.
Figure 15 Speed control with load current compensation
12
Preliminary Information
U 210 B / U 210 B–FP
TELEFUNKEN Semiconductors
Figure 16 Speed control with load current compensation
Figure 17 Load current regulation with soft start
Current regulation is achieved by the integrated operational amplifier as PI–controller (R , C , C ). Inverted input (Pin 7)
7
5
6
of the operational amplifier is directly connected at C with load current proportional test signal (actual value).
3
Desired value is obtained with the help of potentiometer at Pin 8.
13
Preliminary Information
TELEFUNKEN Semiconductors
U 210 B / U 210 B–FP
Dimensions in mm
14
Preliminary Information
U 210 B / U 210 B–FP
TELEFUNKEN Semiconductors
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 and
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.
Of particular concern is the control or elimination of releases into the atmosphere of those substances which are known
as ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) will soon 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 any 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 and
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 and do not contain ozone depleting substances.
We reserve the right to make changes without further notice to improve technical design.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by customer. Should Buyer use TEMIC products for any unintended or unauthorized application, 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
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Preliminary Information
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