TISP61060P Bourns Inc., TISP61060P Datasheet - Page 7

• 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
thyristor to switch into the low-voltage on-state condition. At the end of the negative half cycle, the thyristor
switches off when the current falls below the holding current value (300 mA). Switch-off and re-clipping at
-52 V causes a second pulse of gate current. The wire current drawn by the protector is quasi-sinusoidal
During the positive a.c. voltage period (diode clipping) there is no gate current. During the negative a.c.
voltage period there are two triangular pulses of gate current, which peak at about 80 mA. This is current
which flows into the gate terminal as indicated by the I
charges the V
However, often the supply is generated from a switching mode power supply or the SLIC supply feed has a
series diode which blocks reverse (charging) current flow to the battery. In these cases the supply can only
sink current in the direction shown by the I
greater than I
The maximum average value of I
current is just beginning to approach the switching (I
under high source impedance conditions (e.g. 600
the supply should be able to absorb 700 mA of “wrong way” current. If the supply cannot absorb the current
then a shunt breakdown diode is recommended to provided a path for the gate current to ground (D2 in
Figure 2). High power diodes are expensive, so diode D2 is usually low power, purposely selected to fail
under this a.c. condition and protect the SLIC.
-250
-500
-750
750
500
250
-10
-20
-30
-40
-50
-60
10
0
0
0
0
G
BAT
the value of V
V
G
I N F O R M A T I O N
supply. This would not be a problem if the V
Figure 3. IC PROTECTOR POWER CROSS WAVE FORMS
BAT
5
5
will increase, possibly to a level which causes destruction of the SLIC.
G
occurs when the thyristor only clips the voltage and the peak cathode
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
BAT
I
K
Time - ms
Time - ms
arrow in Figure 2. Unless the SLIC current, I
PROGRAMMABLE OVERVOLTAGE PROTECTORS
10
10
S
). In the case of the LB1201AB, it is recommended that
) value, see Figure 4. The average current is maximised
G
current arrow in Figure 2. This direction of current
V
K
I
BAT
G
15
15
supply was a rechargeable battery.
TISP61060D, TISP61060P
20
20
SLIC
-25
-50
-75
-100
100
75
50
25
0
AI6XAG
, is equal or
7