Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

TISP61089A Datasheet(PDF) 6 Page - Power Innovations Ltd

Part No. TISP61089A
Description  DUAL FORWARD-CONDUCTING P-GATE THYRISTORS PROGRAMMABLE OVERVOLTAGE PROTECTORS
Download  17 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  POINN [Power Innovations Ltd]
Homepage  http://www.bourns.com
Logo 

TISP61089A Datasheet(HTML) 6 Page - Power Innovations Ltd

Zoom Inzoom in Zoom Outzoom out
 6 / 17 page
background image
TISP61089A
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
6
JUNE 1999
P R OD U C T
INF O RMA T ION
operation of gated protectors
Figures 4. and 5. show how the TISP61089A limits negative and positive overvoltages. Positive overvoltages
(Figure 5) are clipped by the antiparallel diodes in the TISP61089A and the resulting current is diverted to
ground. Negative overvoltages (Figure 4.) are initially clipped close to the SLIC negative supply rail value
(VBAT). If sufficient current is available from the overvoltage, then the protector (Th5) will crowbar into a low
voltage on-state condition. As the overvoltage subsides the high holding current of the crowbar prevents d.c.
latchup. The protection voltage will be the sum of the gate supply (VBAT) and the peak gate-cathode voltage
(VGK(BO)). The protection voltage will be increased if there is a long connection between the gate decoupling
capacitor, C1, and the gate terminal. During the initial rise of a fast impulse, the gate current (IG) is the same
as the cathode current (IK). Rates of 70 A/µs can cause inductive voltages of 0.7 V in 2.5 cm of printed wiring
track. To minimise this inductive voltage increase of protection voltage, the length of the capacitor to gate
terminal tracking should be minimised. Inductive voltages in the protector cathode wiring will also increase the
protection voltage. These voltages can be minimised by routing the SLIC connection through the protector as
shown in Figure 3.
Figure 3. TISP61089A BUFFERED GATE PROTECTOR (SECTION 4.5.12 TESTING CONDITION)
Figure 4. NEGATIVE OVERVOLTAGE CONDITION
Figure 5. POSITIVE OVERVOLTAGE CONDITION
R1
50
RING
WIRE
TIP
WIRE
SLIC
TISP61089A
V
BAT
C1
220 nF
AI6XAGA
600
600
A.C.
GENERATOR
0 - 600 Vrms
SWITCHING MODE
POWER SUPPLY
GENERATOR
SOURCE
RESISTANCE
I
BAT
I
G
I
SLIC
C2
D1
Tx
R2
50
Th4
Th5
C1
220 nF
I
G
Th5
SLIC
V
BAT
SLIC
PROTECTOR
TISP
61089A
I
K
AI6XAHA
Th5
SLIC
V
BAT
SLIC
PROTECTOR
TISP
61089A
C1
220 nF
I
F
AI6XAIA


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn