TISP61060P Bourns Inc., TISP61060P Datasheet - Page 9

• Manufacturer Part Number: TISP61060P
• Description: Sidacs
• Manufacturer: Bourns Inc.

Specifications of TISP61060P

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SEPTEMBER 1995 - REVISED AUGUST 2002
Specifications are subject to change without notice.
P R O D U C T
energy capability. Second, the series gate diodes have been changed to transistor buffers. The maximum
current injected into the gate supply is then reduced by the transistors gain factor (H
from the positive voltage diode conduction has been diverted to the gate terminal which subtracts from the
normal gate current. In most cases, this allows any previously used SLIC supply rail shunt protection diode to
be removed. Although the SLIC supply is taken to a terminal that is internally connected to transistor bases,
the terminal is still designated as the gate terminal, G.
Figure 6 shows the high impedance a.c. waveforms for the TISP61060. As the TISP61060 replaces the IC
based protector’s gate diode with a transistor, the peak gate current is reduced by over 50 times. In addition
there is a compensating negative gate current flow during diode conduction. The TISP61060 has the
maximum value of peak gate current specified and so allows for designer to design for limit conditions. Most
IC protectors do not specify this parameter. Figure 7 shows the improvement due to the TISP61060. These
plots show the full cycle average gate current against rms a.c. voltage. The IC based protector has a
substantial positive gate current which will always charge the SLIC supply, possibly causing an overvoltage.
The TISP61060 has a negative gate current and so cannot overvoltage the SLIC.
-100
-200
-300
-10
-20
-30
-40
-50
-60
300
200
100
10
Figure 6. TISP61060 HIGH IMPEDANCE POWER CROSS CLIPPING WAVE FORMS
0
0
0
0
I N F O R M A T I O N
V
G
5
I
I
5
G
K
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
Time - ms
PROGRAMMABLE OVERVOLTAGE PROTECTORS
Time - ms
10
10
V
K
15
I
15
G
TISP61060D, TISP61060P
I
K
FE
). Third, some current
20
20
-2
-4
-6
-8
-10
10
8
6
4
2
0
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9