Motor de Búsqueda de Datasheet de Componentes Electrónicos
Selected language     Spanish  ▼

Delete All
ON OFF
ALLDATASHEET.ES

X  

Preview PDF Download HTML

SSRP130B1 Datasheet(PDF) 2 Page - STMicroelectronics

No. de Pieza. SSRP130B1
Descripción  DUAL ASYMMETRICAL OVERVOLTAGE PROTECTION FOR TELECOM LINE
Descarga  7 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo 

SSRP130B1 Datasheet(HTML) 2 Page - STMicroelectronics

   
Zoom Inzoom in Zoom Outzoom out
 2 / 7 page
background image
Fig 1 : Topologyof the classical line card protection.
APPLICATION INFORMATION
Fig 2 : Classical use of the SSRP130B1.
The classical line card requires protection before
the ring relay and a second one for the SLIC (fig.1).
The use of new SLICs with integrated ring
generator or board based on solid state ring relay
suppresses this second protection (Fig. 2). Then
the only remaining stage, located between the line
and the ring relay, has to optimize the protection.
The classical symmetrical first stage protector
becomes not sufficient to avoid any circuit
destruction during surges.
The SSRP130B1 device takes into account this
fact and is based on asymmetrical voltage
characteristics (Fig.3a). The ring signal being
shifted
back
by
the
battery
voltage,
the
SSRP130B1 negative breakover value Vbo- is
greater than the positive one Vbo+. This point
guarantees a protection operationvery close to the
peak of the normal operating voltage without any
disturbance of the ring signal.
Fig 3 : SSRP130B1 electrical characteristics.
I
V
Vbo-
Vbo+
a : Line to ground characteristics.
VBR -
VBR --
b : Line to line characteristics.
In addition with the 2 crowbar functions which
perform the protection of both TIP and RING lines
versus ground, a third cell assumes the differential
mode protection of the SLIC. The breakdown
voltage values of this third cell are the same for
both
positive
and
negative
parts
of
the
characteristics and are equivalent to the negative
breakdown voltage value of the TIP and RING
lines versus GND cells (Fig.3 b).
PTC
PTC
R
R
SLIC
SSRP130B1
Tip
Ring
(*)
(*) SLIC with integrated ring generator or solid state relay.
LINE
1st
stage
2nd
stage
PTC
PTC
R
R
SLIC
Ring generator
Line
Tip
Ring
SSRP130B1
2/7


Html Pages

1  2  3  4  5  6  7 


Datasheet Download




Enlace URL




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

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Favorito   |   Intercambio de Enlaces   |   Lista de Fabricantes
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