GS1T70-D540F [STMICROELECTRONICS]
ISDN DC-DC CONVERTER FRENCH VERSION; ISDN的DC -DC转换器的法语版本
| 型号： | GS1T70-D540F |
| 厂家： | 
ST |
| 描述： | ISDN DC-DC CONVERTER FRENCH VERSION |
| 文件： | 总4页 (文件大小：67K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
GS1T70-D540F
ISDN DC-DC CONVERTER (FRENCH VERSION)
Type
V
V
I
o
i
o
5 V
90 mA
GS1T70-D540F
25 to 115 V
40 V
10,5 mA
FEATURES
Wide operating line termination battery voltage
Peak input overvoltage withstand: 1kV for
1.2/50µs
Peak overvoltage withstand on Output 2 (40V):
250V for 10/700µs
Positive or negative input voltage polarity
Input and output filtering
Short-circuit protection on both outputs
Input power during shortcircuit within specifica-
tion
Minimum current drain during stand-by condition:
10µA for Vi<18V
Undervoltage lock out at 10V
Input-output isolation voltage: 10 kV pulse 1,2/50
µseconds
Output1-output2isolation voltage: 2000VRMS for
60 seconds
Mechanical dimensions (L x W x H): 56 mm x 56
mm x 18 mm (2.2” x 2.2” x 0.71”)
DESCRIPTION
limit of the specification), input either voltage polar-
ity, 80% minimumefficiency atmaximum load,input
and output filtering to meet very stringent noise
requirements.
The GS1T70-D540Fconverter has been designed
for the “U” interface of an ISDN-NTBA (Network
Termination BasicAccess) system with either4B3T
or 2B1Q standard trasmission.
The input and the output 2 (40V) stages are pro-
tected against differential overvoltage up to 1kV
(1.2/50µs) and 250V (10/700µs) respectively.
It meets the requirements of the following specifi-
cations:
When the input voltage is below 18V, the converter
offersa veryhigh input impedance and a maximum
quiescentcurrent of 10µA.
EN 60950
CCITT I.430
CCITT G.960
CCITT G.961
ETS 300 002
ETS 300 012
These features allow the converter to operate di-
rectly connected to the telephone line without any
external components.
In addition, the wide operatinginput voltage range
allows it to operate within the whole range of LT
(Line Termination) battery voltage and its relevant
line resistance.
ETS 300 047 (ISDN BASIC ACCESS, Safetyand
Protection)
Two isolated outputs, 5V/90mA and 40V/10.5mA
are supplied. The converter offers short-circuit pro-
tection (short-circuit on 40V output doesn’t affect
5V output and the input power never exceeds the
2000V
isolation voltage for 60 second is pro-
RMS
vided betweeninput to outputsandbetween output
1 and output 2.
June 1994
1/4
GS1T70-D540F
ELECTRICAL CHARACTERISTICS (Tamb = 25°C unless otherwise specified)
Std. Conditions:
Line Termination voltage: 90 to 110V
105 to 115V
Line Resistance (Rs): 50 to 1400 Ω
500 to 1900 Ω
Parameter
Input Voltage
Test Conditions
Std. Conditions
Min
Typ
Max
Unit
Symbol
V
25
115
1
V
i
Input Transient
Overvoltage
t = 1.2/250µs (pulse)
V
kV
ipk
Start Up Input
Voltage
See fig. 2
V
28
10
44
V
V
ist
Input Undervoltage
Lockout
V
iuv
Output Voltage 1
Output Voltage 2
Std. Conditions
Std. Conditions
V
V
4.75
34
5
40
5
5.25
42
V
V
o1
o2
Output Ripple
Voltage 1
Std. Conditions
BW = 0 to 20MHz
V
20
mVpp
or1
Output Ripple
Voltage 2
Std. Conditions
V
10
10
30
30
mVpp
mVpp
mA
or2
BW = 0 to 20MHz
Input Noise Voltage
Std. Conditions
BW = 0 to 20MHz
eN
Output Current 1
Std. Conditions
I
2
110
0
90
o1
I
= 0 to 10.5 mA V = 5V
o1
o2
Output Current 1
Limit Initiation
Std. Conditions
I
130
10.5
14
mA
o1I
V
= 4.75 to 5.25V
o1
Output Current 2
Std. Conditions
I
mA
o2
I
= 2 to 90 mA V = 40V
o2
o1
Output 2 Short
Circuit Current
Std. Conditions
Output Shorted (Indefinite time)
I
9
mA
osc2
Isolation Voltage
(pulse)
Input to Output 1 t = 1.2/50 µs
Input to Output 2 t = 1.2/50 µs
Output 1 to Output 2 t = 1.2/50 µs
V
10000
10000
4000
V
RMS
is
Operating Ambient
Temperature Range
T
0
+75
+85
°C
°C
op
Storage
Temperature Range
T
– 40
stg
OUTPUT POWER CHARACTERISTICS
LT (Line Termination Voltage) = 90V to 110V
Rs (Line Resistance) = 50 to 1400 Ω
LT (Line Termination Voltage) = 105V to 115V
Rs (Line Resistance) = 500 to 1900 Ω
Max
Input
Power
(mW)
Min
Output
Power 1
Min
Output
Power 2
Max
Min
Output
Power 1
Min
Input
Output
NT Status
NT Status
Power
Power 2
(5V)[mW] (40V)[mW] (mW)
(5V)[mW] (40V)[mW]
600
1150
200
Activated
Activated Emergency
Deactivated
420
450
110
110
0
420
0
600
1150
200
Activated
420
450
110
110
0
420
0
Activated Emergency
Deactivated
270 Deactivated Emergency
Activated with 40 V
60
270
Deactivated Emergency
60
Short
circuit
Activated with 40V
Short circuit
Short
circuit
1150
450
1150
450
Short circuit
2/4
GS1T70-D540F
CONNECTION DIAGRAM AND MECHANICAL DATA
Figure 1.
Package V. Dimensions in mm (inches).
PIN DESCRIPTION
Pin
Description
Input (either polarity).
Input (either polarity).
+5V Output.
1
2
3
4
5
6
Return for +5V Output.
+40V Output.
Return for +40V Output.
3/4
GS1T70-D540F
VOLTAGE SUPPLY OPERATING AREA
- Switch OFF-ON sequence:
Figure 2 shows the Voltage Supply Operating area
duringthe switch ON-OFF and OFF-ON sequence.
The quiescent current Iq remains below 10µA if Vi
is lower than 18V.
The start-up voltage is between 34 to 44V. After 1
- Switch ON-OFF sequence:
ms in this condition, the converter is in Voltage
For an Input Voltage Vi > 25V, the circuit operates
correctly, because it lies in the Voltage Supply
Operating Area.
Supply Operating Area (V = 25 to 115V).
in
The converter goes in High Input Impedancemode
(I < 10µA) when the V is lower than 10V. If V
i
q
i
remains between0 -10V range for almost foralmost
100 ms, the converter is in OFF condition.
Figure 2.
Vi
115V
Voltage
Supply
Operating
Area
Voltage Supply
Operating Area
44V
34V
25V
18V
10V
0V
Iq < 10 µA Area
Iq < 10 µA Area
t
t>1mS
t>100mS
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for useas critical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectronics.
1994 SGS-THOMSON Microelectronics – All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
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4/4
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