TISP61089BSD Bourns, Inc., TISP61089BSD Datasheet - Page 10

• Manufacturer Part Number: TISP61089BSD
• Description: Dual Forward-conducting P-gate Thyristors Programmable Overvoltage Protectors
• Manufacturer: Bourns, Inc.

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. To avoid transistor CB current amplification by the transistor gain, the transistor base-emitter is shorted
during this test (see Figure 11).
Summary: Two tests are need to verify the protector junctions. Maximum current values for I
voltage conditions.
Gated Protectors (Continued)
WIRE
WIRE
RING
TISP61089BSD High Voltage Ringing SLIC Protector
TIP
PROTECTION
CURRENT
OVER-
R1b
R1a
Th3
PROTECTION
RING/TEST
3xxxF3
7xxxF3
TISP
OR
61089BSD
Figure 10. Transistor CB AND EB Verification
Th2
Th1
Figure 11. Off-State Current Verification
0 V
TISP
V
Figure 12. Typical Application Circuit
(BO)
0 V
I
D(I)
is the internal SCR value of I
RELAY
EQUIP-
I
S1a
MENT
D
TEST
TEST
S1b
I
R
A
I
K
D(I)
I
K
EB
S2b
GENERATOR
I
CB
61089BSD
B (G)
RING
RELAY
RING
TISP
I
GKS
B (G)
I
Customers should verify actual device performance in their specific applications.
CB
S2a
D
+ V
RELAY
V
AI6XCEc
AI6XCFc
SLIC
BATH
S3a
S3b
FRM
0 V
GKS
and I
D
PROTECTOR
V
are required at the specified applied
Specifications are subject to change without notice.
61089BSD
BATH
SLIC
TISP
Th4
Th5
SEPTEMBER 2005 - REVISED MAY 2007
220 nF
C1
SLIC
AI6XAJBa