U217B-FP [ATMEL]
Analog Circuit, 1 Func, BIPolar, PDSO8, SO-8;
| 型号： | U217B-FP |
| 厂家： | 
ATMEL |
| 描述： | Analog Circuit, 1 Func, BIPolar, PDSO8, SO-8 光电二极管 |
| 文件： | 总11页 (文件大小：148K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
U217B
Zero-Voltage Switch with Adjustable Ramp
Description
The integrated circuit, U217B, is designed as a zero- A ramp generator allows power control function by
voltage switch in bipolar technology. It is used to control period group control, whereas full-wave logic guarantees
resistive loads at mains by a triac in zero-crossing mode. that full mains cycles are used for load switching.
Features
Simple power control
Direct supply from the mains
Ramp generator
Current consumption ≤ 0.5 mA
Reference voltage
Very few external components
Applications
Full-wave drive – no DC current component in the
Full-wave power control
load circuit
Temperature regulation
Negative output current pulse typ. 100 mA –
short-circuit protected
Power blinking switch
Block Diagram
L
D1
BYT86/800
R2
18 k
2 W
Load
1000 W
220 k
(250 V~)
R1
(Rsync
)
R4
100 k
C2
C1
100 F/
16 V
2
8
5
VM
=
2.2 F/
10 V
1
7
6
Ramp
generator
230 V~
Synchronization
Supply
TIC
GND
MT2
MT1
236N
100
R3
R5
15 k
3
4
+
+
–
Full-wave logic
max
min
G
Pulse
amplifier
Comparator
100 k
Reference voltage
1.25 V
R6
U217B
58 k
N
Figure 1. Block diagram with typical circuit, period group control 0 to 100%
Order Information
Extended Type Number
Package
DIP8
SO8
Remarks
U217B-x
U217B-xFP
Tube
Tube
U217B-xFPG3
SO8
Taped and reeled
Rev. A3, 05-Nov-99
1 (11)
U217B
Pin Description
U217B
1
2
3
4
8
7
6
5
Ramp
V
sync
Ramp
control
C
Ramp
GND
1
U217B
OP+
Output
2
C
2
–V
S
OP–
V
S
Figure 3. Pin 1 internal network
Figure 2. Pinning
Pin
1
Symbol
Ramp
Function
Ramp output
t
2
C
RAmp
Ramp capacitor
V
1
3
OP+
OP–
OP non-inverting input
OP inverting input
Supply voltage
Final voltage
1.4 V
V
min
4
5
V
S
6
Output
GND
Trigger pulse output
Ground
Initial voltage
max
7.3 V
T
V
7
8
V
sync
Voltage synchronization
–V
S(Pin5)
Figure 4. Threshold voltage of the ramp
General Description
The integrated circuit U217B is a triac controller for zero-
crossing mode. It is designed to control power in
switching resistive loads of mains supplies.
Triac Firing Current (Pulse)
This depends on the triac requirement. It can be limited
with gate series resistance which is calculated as follows:
Information regarding supply sync. is provided at Pin 8
7.5 V – V
Gmax
via resistor R
.
Sync
R
Gmax
– 36
I
Gmax
To avoid DC load on the mains, the full-wave logic
guarantees that complete mains cycles are used for load
switching.
I
Gmax
I =
P
t
p
T
A fire pulse is released when the inverted input of the
comparator is negative (Pin 4) with respect to the
non–inverted input (Pin 3) and internal reference voltage.
A ramp generator with free selectable duration can be
where:
V
G
= Gate voltage
IGmax = Maximum gate current
I
= Average gate current
= Firing pulse width
= Mains period duration
p
performed by capacitor C at Pin 2. The ramp function is
2
t
p
used for open-loop control (figure 4), but also for applica-
tion with proportional band regulation (figure 11). Ramp
T
voltage available at capacitor C is decoupled across the
2
Firing Pulse Width tp (Figure 5)
emitter follower at Pin l. To maintain the lamp flicker
specification, ramp duration is adjusted according to the
controlling load. In practice, interference should be
avoided (temperature control). Therefore, a two-point
control is preferred to proportional control. One can use
internal reference voltage for simple applications. In that
case, Pin 3 is inactive and connected to Pin 7 (GND), see
figure 13.
This depends on the latching current of the triac and its
load current. The firing pulse width is determined by the
zero-crossing identification which can be influenced with
the help of sync. resistance, R , (figure 6).
sync
I
V
M
2
L
t =
p
arc. sin
P 2
2 (11)
Rev. A3, 05-Nov-99
U217B
whereby:
The series resistance R can be calculated (figures 7
1
I
V
P
=
=
=
Latching current of the triac
Mains supply, effective
Power load (user’s power)
and 8) as follows:
L
M
2
V
V
(V
V )
min – Smax
M – S
R
1max
= 0.85
; P
=
(R1)
2 I
tot
2 R
1
Total current consumption is influenced by the firing
pulse width which can be calculated as follows:
I
= I + I + I
S P x
tot
t
p
VM 2 sin (
3.5
)–0.6 V
2
Rsync
–49 k
whereby:
10–5
A
V
V
= Mains voltage
= Limiting voltage of the IC
= Total current consumption
= Current requirement of the IC (without load)
= Current requirement of other peripheral
components
M
S
10.00
I
I
I
tot
V
= 230 V
mains
S
x
1.00
0.10
0.01
P
(R1)
= Power dissipation at R
1
50
I
L
( mA)
200
40
30
V
=230V
100
50
Mains
10
100
1000
P ( W )
10000
20
10
0
Figure 5. Output pulse width
3600
3200
2800
2400
2000
1600
1200
800
15
0
3
6
9
12
I
( mA )
tot
Figure 7. Maximum resistance of R1
6
5
V
=230V
Mains
400
4
3
2
1
0
0
0
200 400 600 800 1000 1200
tp
Figure 6. Synchronization resistance
Supply Voltage
The integrated circuit U217B (which also contains
internal voltage limiting) can be connected via the diode
15
0
3
6
9
12
I
( mA )
tot
(D ) and the resistor (R ) with the mains supply. An
1
1
internal climb circuit limits the voltage between Pin 5 and
7 to a typical value of 9.25 V.
Figure 8. Power dissipation of R1
according to current consumption
Rev. A3, 05-Nov-99
3 (11)
U217B
Absolute Maximum Ratings
Reference point Pin 7
Parameters
Supply current
Sync. current
Output current ramp generator
Input voltages
Symbol
–I
I
Sync.
Value
30
5
Unit
mA
mA
mA
V
V
V
Pin 5
Pin 8
Pin 1
Pin 1, 3, 4, 6
Pin 2
S
I
3
O
–V
–V
≤V
I
S
2 to V
I
S
Pin 8
±V
≤ 7.3
I
Power dissipation
T
= 45°C
= 100°C
P
P
T
j
400
125
125
mW
mW
°C
amb
tot
tot
T
amb
Junction temperature
Operating ambient temperature range
Storage temperature range
T
T
0 to 100
–40 to + 125
°C
°C
amb
stg
Thermal Resistance
Parameters
Symbol
R
thJA
Value
200
Unit
K/W
Junction ambient
Electrical Characteristics
–V = 8.5 V, T
= 25°C, reference point Pin 7, unless otherwise specified
S
amb
Parameters
Supply-voltage limitation
Supply current
Voltage limitation
Synchronous current
Zero detector
Test Conditions / Pin
Symbol
–V
Min.
8.6
Typ.
9.25
Max.
9.9
500
8.7
Unit
V
A
V
mA
A
–I = 5 mA
Pin 5
Pin 5
Pin 8
Pin 8
S
S
–I
S
I = ± 1 mA
± V
7.5
0.12
8
I
±I
±I
sync
sync
35
Output pulse width
V = 230 V
M
,
R
sync
R
sync
= 220 k
= 470 k
t
P
t
P
260
460
s
s
Output pulse current
Comparator
Input offset voltage
Input bias current
Common-mode input
voltage
V = 0 V
6
Pin 6
–I
100
1
mA
O
Pin 3,4
Pin 4
Pin 3,4
V
I0
5
15
1
mV
A
V
I
IB
–V
(V –1)
IC
S
Threshold internal
reference
V = 0 V
3
Pin 4
–V
1.25
V
T
Ramp generator, Pin 1, figure 1
Period
–I = 1 mA, I
S
=1 mA,
sync
C = 100 F, C = 1 F,
1
2
R = 100 k
T
1.5
1.40
7.3
17
s
4
Final voltage
Initial voltage
Charge current
V
V
0.9
6.8
13
1.80
7.8
26
V
V
A
1
1
V = 0 V, I = –1 mA Pin 2
2
–I
2
8
4 (11)
Rev. A3, 05-Nov-99
U217B
Applications
L
R
L
270 k
Load
1N4007
V
M
= 230 V ~
N
18 k
56
1.5 W
VDR
+5 V
8
1
6
5
4
7
CNY21
U217B
2
3
56 k
47 F/
10 V
I
1.5 mA
I
39 k
V
I
Figure 9. Power switch
L
D
1
1N4007
2.2 F/
10 V
C
2
R
(R
18 k
2 W
/
Load
1000 W
2
220 k
(250 V~)
R
1
)
sync
R
8
R
4
C
1
470 k
2
8
5
100 k
V
=
M
BC237
1
7
6
Ramp
generator
230 V~
Synchronization
Full-wave logic
Supply
NTC/M87
B value =
3988
R
R
6
1)
(25)
R
5
100 k
100 k
3
4
100
R
+
+
–
Pulse
amplifier
R
9
3
Comparator
150
Reference voltage
1.25 V
U217B
R
p
R
7
220 k
130 k
N
Figure 10. Temperature control 15 to 35°C with sensor monitoring
NTC–Sensor M 87 Fabr. Siemens
1)
R( ) =100 k /B =3988
25
R
(15)
= 159 k
R
5
determines the proportional range
R( ) = 64.5 k
35
Rev. A3, 05-Nov-99
5 (11)
U217B
L
0.5 ...
2.2 kW
BYT86/800
270 k
100 nF/
250 V ~
V = 230 V ~
M
18 k /
1.5 W
56
82
N
8
6
5
7
U217B
1
2
3
4
150 k
110 k
0.47 F/
10 V
47 F/ 16V
Figure 11. Power blinking switch with f 2.7 Hz, duty cycle 1:1, power range 0.5 to 2.2 kW
6 (11)
Rev. A3, 05-Nov-99
U217B
– T
L
BYT86/800
1N4148
R
1
0.35 ...
1.5 kW
R
4
Load
= 230 V ~
510 k
680 k
R
5
V
M
680 k
R
2
R
3
13 k /2 W
I = 50 mA
H
62
N
1N4148
R
16
8
6
5
7
220 k
R
6
U217B
9.1 k
R
7
12 k
1
2
3
4
R
10
R
15
C
3
910 k
25 k
R
9
10 nF
C
1
NTC
33 k
2.2 F
12 k
R
8
C
5
C
C
2
4
100 F/
12 V
56 k
47 F
1 F
Figure 12. Room temperature control with definite reduction (remote control) for a temperature range of 5 to 30°C
Rev. A3, 05-Nov-99
7 (11)
U217B
L
220 k
BYT51G
Load/ 1000 W
= 230 V ~
V
M
18 k
1.5 W
VDR
56
N
8
6
5
7
220 k
(680 k
U217B
500 k
(2 M
1
2
3
4
50 k
(200 k
10 nF
68 F/
10 V
NTC
Figure 13. Two–point temperature control for a temperature range of 15 to 30°C
8 (11)
Rev. A3, 05-Nov-99
U217B
L
D
1
R
sync
BYT51G
Load/400 W
430 k
V
M
= 230 V~
18 k /
1.5 W
R
1
92
N
R
3
8
6
5
7
NTC
200 k
U217B
D
2
1N4148
1
2
3
4
R
6
R /
15
50 k
27 k
330 k
R / 39 k
4
R
5
C
2
8.2 k
R /
7
150 nF
C
3
C
1
33 F/
10 V
68 F/
10 V
Figure 14. Two-point temperature control for a temperature range of 18 to 32°C and a hysteresis of ± 0.5°C at 25°C
Rev. A3, 05-Nov-99
9 (11)
U217B
Package Information
Package DIP8
Dimensions in mm
9.8
9.5
7.77
7.47
1.64
1.44
4.8 max
3.3
6.4 max
0.5 min
0.36 max
0.58
0.48
9.8
8.2
2.54
7.62
8
5
technical drawings
according to DIN
specifications
1
4
Package SO8
Dimensions in mm
5.2
4.8
5.00
3.7
4.85
1.4
0.2
0.25
0.10
0.4
3.8
1.27
6.15
5.85
3.81
8
5
technical drawings
according to DIN
specifications
1
4
10 (11)
Rev. A3, 05-Nov-99
U217B
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC Semiconductor 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 Semiconductor GmbH 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 Semiconductor GmbH 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 Semiconductors products for any unintended or
unauthorized application, the buyer shall indemnify TEMIC Semiconductors 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 Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423
Rev. A3, 05-Nov-99
11 (11)
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