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PDF TISP61089A Data sheet ( Hoja de datos )
| Número de pieza | TISP61089A | |
| Descripción | DUAL FORWARD-CONDUCTING P-GATE THYRISTORS PROGRAMMABLE OVERVOLTAGE PROTECTORS | |
| Fabricantes | Power Innovations Limited | |
| Logotipo |  |
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Copyright © 1999, Power Innovations Limited, UK
TISP61089A
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
JUNE 1999
PROGRAMMABLE SLIC OVERVOLTAGE PROTECTION FOR LSSGR ‘1089
q Dual Voltage-Programmable Protectors
- Wide 0 to -110 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 K1 (Tip)
(Gate) G 2 7 A (Ground)
NC 3
6 A (Ground)
(Ring) K2 4
5 K2 (Ring)
MD6XAN
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
10
4.4
2.1
0.84
0.83
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
P PACKAGE
(TOP VIEW)
(Tip) K1 1
8 K1 (Tip)
(Gate) G 2
7 A (Ground)
NC 3
6 A (Ground)
(Ring) K2 4
5 K2 (Ring)
MD6XAV
NC - No internal connection
Terminal typical application names shown in
parenthesis
device symbol
K1 G K2
q Also Rated for ITU-T 10/700 impulses
q Surface Mount and Through-Hole Options
- TISP61089AP for Plastic DIP
- TISP61089AD for Small-Outline
- TISP61089ADR for Small-Outline Taped
and Reeled
description
The TISP61089A is a dual forward-conducting
buffered p-gate overvoltage protector. It is
A SD6XAE
Terminals K1, K2 and A correspond to the alternative
line designators of T, R and G or A, B and C. The
designed to protect monolithic SLICs (Subscriber
Line Interface Circuits) against overvoltages on
negative protection voltage is controlled by the voltage,
VGG, applied to the G terminal.
the telephone line caused by lightning, a.c.
power contact and induction. The TISP61089A limits voltages that exceed the SLIC supply rail voltage. The
TISP61089A 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 -100 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.
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
1 page  
TISP61089A
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
JUNE 1999
THERMAL INFORMATION
NON-REPETITIVE PEAK ON-STATE CURRENT
vs
CURRENT DURATION
TI6HAC
10
9
8
VGEN = 600 Vrms, 50/60 Hz
7 RGEN = 1.4*VGEN/ITSM(t)
6 EIA/JESD51-2 ENVIRONMENT
5 EIA/JESD51-3 PCB
4 TA = 25 °C
GROUND RETURN = 2xITSM(t)
3
2
1.5
1
0.9
0.8
0.7
0·1
1 10 100
t - Current Duration - s
1000
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
5
5 Page 
TISP61089A
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
JUNE 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 TISP61089A will survive both these conditions as its ratings are 2x0.83 A and 2x4.1 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
AΩ
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
Ω
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 Ω 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 TISP61089A will survive these peak current values as they are lower than the TISP61089A
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
TISP61089A to survive this test, the series current limiting element must operate within 0.01 s and 0.35 s
respectively.
table 5. second-level power fault currents
A.C.
OPEN-CIRCUIT SHORT-CIRCUIT SOURCE
DURATION RMS VOLTAGE
CURRENT
RESISTANCE
sV
AΩ
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
Ω
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
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet TISP61089A.PDF ] | |
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