CLP30-200B1 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'CLP30-200B1' PDF : 11 Pages View PDF
Technical information
CLP30-200B1
2.2.2
Figure 14. Line card protection
I
Programmable thanks to
any external voltage reference
- VSWON
+ ISWON
Programmable thanks to
an external resistor
V
+ VSWON
- ISWON
Line Card operating conditions
Figure 14. summarises the performance of the CLP30-200B1 which basically holds the
SLIC inside its correct voltage and current values.
Application circuit
Figure 15. CLP30-200B1 in line card
PTC
TIP
RS
GND
RING
PTC
RS
I
RSENSE
TIPL
TIPS
Overcurrent
detector
OR
SW1
Overvoltage
detector
Overvoltage
reference
(> 200 V)
SW2
OR
Overvoltage
detector
Overvoltage
reference
(> 200 V)
Overcurrent
detector
RINGL
RSENSE
RINGS
1
2
1
2
Ring
Generator
- VBAT
Rp
TIP
- VBAT
External
voltage
reference
SLIC
Rp
RING
The Figure 15. above shows the topology of a protected analog subscriber line at the line
card side.
■ A first stage based on CLP30-200B1 manages the high power issued from the external
surges. When used in ringing mode, the CLP30-200B1 operates in voltage mode and
provides a symmetrical and bidirectional overvoltage protection above 200 V on both TIP
and RING lines. When used in speech mode, the CLP30-200B1 operates in current mode
and the activation current of the CLP30-200B1 is adjusted by RSENSE.
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