TISP61089 查看數據表（PDF） - Power Innovations

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TISP61089

DUAL FORWARD-CONDUCTING P-GATE THYRISTORS PROGRAMMABLE OVERVOLTAGE PROTECTORS

Power Innovations 

TISP61089

DUAL FORWARD-CONDUCTING P-GATE THYRISTORS

PROGRAMMABLE OVERVOLTAGE PROTECTORS

NOVEMBER 1995 - REVISED FEBRUARY 1998

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 TISP61089 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

s

V

A

Ω

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 TISP61089 will survive these peak current values as they are lower than the TISP61089 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

TISP61089 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

s

V

A

Ω

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

Using a 25 Ω series resistor will result in table 5. ITM column values of 2x24, 2x7.7, 2x5.7, 2x11, 2x0.47, 2x1.4

and 2x2.9. The TISP61089 will probably fail for a peak current level of 2x24 A and the series current limiting

PRODUCT INFORMATION

11

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