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Número de pieza TISP61089SDR
Descripción DUAL FORWARD-CONDUCTING P-GATE THYRISTORS PROGRAMMABLE OVERVOLTAGE PROTECTORS
Fabricantes Power Innovations Limited 
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Copyright © 1999, Power Innovations Limited, UK
TISP61089S
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
JULY 1999
PROGRAMMABLE SLIC OVERVOLTAGE PROTECTION FOR LSSGR ‘1089
q Dual Voltage-Programmable Protectors
- Wide 0 to -85 V Programming Range
- Low 5 mA max. Gate Triggering Current
- High 150 mA min. Holding Current
q Rated for LSSGR ‘1089 Conditions
WAVE SHAPE
2/10 µs
10/1000 µs
‘1089 TEST CLAUSE
AND TEST #
4.5.8 Second-Level 1
4.5.7 First-Level 3
ITSP
A
120
30
D PACKAGE
(TOP VIEW)
(Tip) K1
1
8 NC
(Gate) G 2 7 A (Ground)
NC 3
6 A (Ground)
(Ring) K2
4
5 NC
MD6XBA
NC - No internal connection
Terminal typical application names shown in
parenthesis
60 Hz POWER
FAULT TIME
100 ms
1s
5s
300 s
900 s
‘1089 TEST CLAUSE
AND TEST #
4.5.13 Second-Level 2
4.5.13 Second-Level 2
4.5.13 Second-Level 2
4.5.13 Second-Level 1
4.5.13 Second-Level 1
ITSM
A
11
4.5
2.4
0.95
0.93
q 2/10 Protection Voltage Specified
ELEMENT
Diode
Crowbar
VGG = -48 V
FIRST-LEVEL
V @ 56 A
6
SECOND-LEVEL
V @ 100 A
8
-57 -60
q Also Rated for ITU-T 10/700 impulses
q Small Outline Surface Mount Package
- Available Ordering Options
CARRIER
Tube
Taped and reeled
ORDER #
TISP61089SD
TISP61089SDR
device symbol
K1
A
G1,G2
A
K2
Terminals K1, K2 and A correspond to the alternative
line designators of T, R and G or A, B and C. The
negative protection voltage is controlled by the
voltage, VGG, applied to the G terminal.
SD6XAP
q Single-Lead Line Connection Version of
Feed-Through TISP61089D
- Ground Lead Creepage Distance . . > 3 mm
description
The TISP61089S is a dual forward-conducting buffered p-gate overvoltage protector. It is designed to protect
monolithic SLICs (Subscriber Line Interface Circuits) against overvoltages on the telephone line caused by
lightning, a.c. power contact and induction. The TISP61089S limits voltages that exceed the SLIC supply rail
voltage. The TISP61089S parameters are specified to allow equipment compliance with Bellcore GR-1089-
CORE, Issue 1.
The SLIC line driver section is typically powered from 0 V (ground) and a negative voltage in the region of
-10 V to -75 V. The protector gate is connected to this negative supply. This references the protection
(clipping) voltage to the negative supply voltage. As the protection voltage will then track the negative supply
voltage the overvoltage stress on the SLIC is minimised.
Positive overvoltages are clipped to ground by diode forward conduction. Negative overvoltages are initially
clipped close to the SLIC negative supply rail value. If sufficient current is available from the overvoltage, then
PRODUCT INFORMATION
Information is current as of publication date. Products conform to specifications in accordance
with the terms of Power Innovations standard warranty. Production processing does not
necessarily include testing of all parameters.
1

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TISP61089SDR pdf
TISP61089S
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
JULY 1999
THERMAL INFORMATION
PEAK NON-RECURRING A.C.
vs
CURRENT DURATION
TI6LACA
RING AND TIP CONNECTIONS -
10
ITSM applied simultaneously to both
GROUND CONNECTION -
Return current is twice ITSM
VGEN = 600 Vrms
RGEN = 70 to 950
VG = -48 V, TAMB = 85°C
1
0·1 1
10 100 1000
t - Current Duration - s
Figure 2. NON-REPETITIVE PEAK ON-STATE CURRENT AGAINST DURATION
APPLICATIONS INFORMATION
gated protectors
This section covers three topics. Firstly, it is explained why gated protectors are needed. Second, the voltage
limiting action of the protector is described. Third, an example application circuit is described.
purpose of gated protectors
Fixed voltage thyristor overvoltage protectors have been used since the early 1980s to protect monolithic
SLICs (Subscriber Line Interface Circuits) against overvoltages on the telephone line caused by lightning, a.c.
power contact and induction. As the SLIC was usually powered from a fixed voltage negative supply rail, the
limiting voltage of the protector could also be a fixed value. The TISP1072F3 is a typical example of a fixed
voltage SLIC protector.
SLICs have become more sophisticated. To minimise power consumption, some designs automatically adjust
the supply voltage, VBAT, to a value that is just sufficient to drive the required line current. For short lines the
supply voltage would be set low, but for long lines, a higher supply voltage would be generated to drive
sufficient line current. The optimum protection for this type of SLIC would be given by a protection voltage
which tracks the SLIC supply voltage. This can be achieved by connecting the protection thyristor gate to the
SLIC supply, Figure 3. This gated (programmable) protection arrangement minimises the voltage stress on
the SLIC, no matter what value of supply voltage.
PRODUCT INFORMATION
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TISP61089SDR arduino
TISP61089S
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
JULY 1999
section 4.5.12 - first-level power fault testing
The most significant tests are a long duration (900 s) medium current test and a higher current tests of 60 one
second power applications. As shown in table 4, the peak currents for these tests are 2x0.37 A and 2x1.3 A
respectively. The TISP61089S will survive both these conditions as its ratings are 2x0.93 A and 2x4.5 A for
these time periods
table 4. first-level power fault currents
A.C.
OPEN-CIRCUIT SHORT-CIRCUIT SOURCE
DURATION RMS VOLTAGE RMS CURRENT RESISTANCE
sV
A
1 200
0.33
600
1 400
0.67
600
1 600
1 600
1 1000
1 1000
900 50
0.33
150
900 100
0.17
590
TOTAL CIRCUIT
RESISTANCE
640
640
640
1040
190
630
ITRMS
A
2x0.31
2x0.63
2x0.94
2x0.96
2x0.26
2x0.16
ITM
A
2x0.44
2x0.88
2x1.3
2x1.3
2x0.37
2x0.22
Using a 25 series resistor will result in table 4. ITM column values of 2x0.45, 2x0.9, 2x1.4, 2x1.4, 2x0.4 and
2x0.23. The TISP61089S will survive these peak current values as they are lower than the TISP61089S
ratings.
section 4.5.13 - second-level power fault testing
The two most significant tests are a long duration (900 s) medium current test and a higher current 5 s test.
As shown in table 5, the peak currents for these tests are 2x17 A and 2x7.7 A respectively. For the
TISP61089S to survive this test, the series current limiting element must operate within 0.1 s and 0.5 s
respectively.
table 5. second-level power fault currents
A.C.
OPEN-CIRCUIT SHORT-CIRCUIT SOURCE
DURATION RMS VOLTAGE
CURRENT
RESISTANCE
sV
A
5 600
5 600
900 120
900 277
900 100
900 300
900 600
60 10
7 86
25 5
25 11
0.37
273
1.1 273
2.2 273
TOTAL
CIRCUIT
RESISTANCE
50
126
45
51
313
313
313
ITRMS
A
2x12
2x4.8
2x2.7
2x5.4
2x0.32
2x0.96
2x1.9
ITM
A
2x17
2x6.8
2x3.8
2x7.7
2x0.45
2x1.4
2x2.7
PRODUCT INFORMATION
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