TISP61089BSD Bourns, Inc., TISP61089BSD Datasheet
TISP61089BSD
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TISP61089BSD Summary of contents
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... Description The TISP61089BSD is a dual forward-conducting buffered p-gate thyristor (SCR) overvoltage protector 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 TISP61089BSD limits voltages that exceed the SLIC supply rail voltage. The TISP61089BSD parameters are specified to allow equipment compliance with Telcordia GR-1089-CORE, Issue 3 and ITU-T recommendations K ...
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... As the overvoltage subsides the high holding current of TISP61089BSD SCR prevents d.c. latchup. The TISP61089BSD is intended to be used with a series combination Ω or higher resistance and a suitable overcurrent protector. Power fault compliance requires the series overcurrent element to open-circuit or become high impedance (see Applications Information). For equipment compliant to ITU-T recommendations K.20 or K.21 or K.45 only, the series resistor value is set by the coordination requirements. For coordination with a 400 V limit GDT, a minimum series resistor value of 10 Ω ...
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... TISP61089BSD gate decoupling capacitor G TISP61089BSD series resistor for GR-1089-CORE first-level and second-level surge survival TISP61089BSD series resistor for GR-1089-CORE intra-building port surge survival R S TISP61089BSD series resistor for K.20, K.21 and K.45 coordination with a 400 V primary protector Electrical Characteristics °C (Unless Otherwise Noted) Parameter I Off-state current ...
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... TISP61089BSD High Voltage Ringing SLIC Protector Parameter Measurement Information V GK(BO (BO (BO) Quadrant III Switching Characteristic Unless Otherwise Noted, All Voltages are Referenced to the Anode + FSP TSP FSM TSM ...
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... TISP61089BSD High Voltage Ringing SLIC Protector Thermal Information PEAK NON-RECURRING AC vs CURRENT DURATION 20 RING AND TIP TERMINALS: 15 Equal I simultaneously 10 GROUND TERMINAL: 8 Current twice 1 -100 V 0.8 GG 0.7 0 -120 V GG 0.5 0.01 0 — Current Duration — s Figure 2. Non-Repetitive Peak On-State Current ...
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... TISP61089BSD High Voltage Ringing SLIC Protector Operation of Ringing SLICs using Multiple Negative Voltage Supply Rails Figure 4 shows a typical powering arrangement for a multi-supply rail SLIC. V switch S1 in the position shown, the line driver amplifiers are powered between 0 V and V for short loop transmission. For long loops and to generate ringing, the driver voltage is increased by operating S1 to connect V conditions are shown in Figure 5 ...
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... Gated Protectors This section covers four topics. Firstly explained why gated protectors are needed. Second, the voltage limiting action of the protector is described. Third, how the withstand voltages of the TISP61089BSD junctions are set. Fourth, 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 ...
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... Figure 7. Negative Overvoltage Condition Operation of Gated Protectors Figure 7 and Figure 8 show how the TISP61089BSD limits negative and positive overvoltages. Positive overvoltages (Figure 8) are clipped by the antiparallel diode of Th5 and the resulting current is diverted to ground. Negative overvoltages (Figure 7) are initially clipped close to the SLIC negative supply rail value (V ) ...
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... B (G). The following junctions are subject to voltage stress: Transistor EB and CB, SCR AK (off state) and the antiparallel diode (reverse blocking). This clause covers the necessary testing to ensure the junctions are good. Testing transistor CB and EB: The maximum voltage stress level for the TISP61089BSD is V diode voltage overshoot, V ...
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... TISP61089BSD High Voltage Ringing SLIC Protector Gated Protectors (Continued) Testing transistor CB, SCR AK off state and diode reverse blocking: The highest AK voltage occurs during the overshoot period of the protector. To make sure that the SCR and diode blocking junctions do not break down during this period, a d.c. test for off-state current, ID, can be applied at the overshoot voltage value ...
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... TISP61089BSD High Voltage Ringing SLIC Protector Application Circuit Figure 12 shows a typical TISP61089BSD SLIC card protection circuit. The incoming line conductors, Ring (R) and Tip (T), connect to the relay matrix via the series overcurrent protection. Fusible resistors, fuses and positive temperature coefficient (PTC) resistors can be used for overcurrent protection ...
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... TISP61089BSD High Voltage Ringing SLIC Protector ‘1089 Section 4.5.5 - Test Generators (Continued) The exception to these two conditions of independence and limit waveshape values is the alternative IEEE C.62.41, 1.2/50-8/20 combination wave generator, which may be used for testing in ‘1089 Sections 4.5.7, 4.5.8 and 4.5.9. Here, the quoted waveshape values are nominal with defined tolerance. The open-circuit voltage waveshape is 1.2 µ ...
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... Table 1 shows the tests for this section. The peak TISP61089BSD current the generator fictive source and the line feed, R and 40 Ω. The TISP61089BSD rated current values at the various waveshapes are higher than those listed in Table 1. Used with the specified values the TISP61089BSD will survive these tests ...
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... ACCEPTABLE 4 REGION 3 2.5 2 0.01 0 Current Duration - s Figure 16. Wiring Simulator Current-Time values of 8 Ω, 25 Ω and 40 Ω. The listed currents are lower than the TISP61089BSD current rating of Table 3. Intra-building Lightning Surge Currents No Test Primary Current of Connections Fitted A Tests 100 +1, -1 Transverse ...
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... RMS Voltage s V 900 0 to 600 ‘1089 Section 4.5.12 - First-Level Power Fault Testing Table 5 shows the nine tests used for this section. The TISP61089BSD will survive these peak current values as they are lower than the TISP61089BSD current-time ratings. Open-circuit Test AC Duration RMS Voltage ...
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... Section 4.5.11 is replaced by a one-foot section of 26 AWG wrapped in cheesecloth. The equipment fails if an open circuit occurs or the cheesecloth is damaged. Table 7 shows the test conditions for this section. Columns 7 and 8 show the prospective currents using R values of 25 Ω and 40 Ω. For the TISP61089BSD to survive, the series overcurrent protection to operate before the TISP61089BSD current-time ratings are exceeded. ...
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... To meet ‘1089, the overcurrent protection must be coordinated with the requirements of Sections 4.5.7, 4.5.8, 4.5.9, 4.5.12, 4.5.13, 4.5.15 and the TISP61089BSD. The overcurrent protection must not fail in the first level tests of Sections 4.5.7, 4.5.9 and 4.5.12 (tests 1 through 5). Test 6 through 9 of Section 4.5.12 are not requirements. The test current levels and their duration are shown in Figure 18. First level tests have a high source resistance and the current levels are not strongly dependent on the TISP61089BSD series resistor value ...
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... A may need an increase of the PTC thermistor d.c. resistance value to 50 Ω or more. In controlled temperature environments, where the temperature does not drop below freezing, the TISP61089BSD 2/10 capability is about 170 A, and this would allow a lower value of resistance. Generally polymer PTC thermistors are not available in sufficiently high ohmic values to be used as the only line feed resistance. To meet the required resistance value, an addition (fixed) series resistance can be used ...
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... TISP61089BSD High Voltage Ringing SLIC Protector Overcurrent and Overvoltage Protection Coordination (Continued) PEAK AC vs CURRENT DURATION Ceramic PTC Thermistor 2 1.5 1 First Level 0.8 Tests # 1 0.6 0.5 through 5, 0.4 0.3 25 Ω & 40 Ω 0.2 0.15 0.01 0 — Current Duration — s Figure 21. Ceramic PTC Thermistor SEPTEMBER 2005 - REVISED MAY 2007 Specifications are subject to change without notice ...
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... Bourns, Ltd., a Bourns Company, and is Registered in U.S. Patent and Trademark Office. “Bourns” registered trademark of Bourns, Inc. in the U.S. and other countries. COPYRIGHT© 2005, BOURNS, INC. LITHO IN U.S.A. e 10/05 TSP0505 Specifications are subject to change without notice. ...