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Details, datasheet, quote on part number:GS1T70-D540
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Datasheet text preview:
GS1T70-D540/2
ISDN DC-DC CONVERTER
PRELIMINA RY DATA Type GS1T70-D540/2 Vi 28 to 115 V Vo out 1 : 5V Io 72 mA
out 2 : 40V 12 mA
FEATURES Wide operating line termination voltage Positive or negative input voltage polarity Input and output filtering Short-circuit protection on both outputs Input power during shortcircuit within specification Minimum current drain during stand-by condition: 10µA for Vi<18V Input-Output2 insulation voltage: 3000VRMS for 60 seconds Output1-Output2 insulation voltage: 3000VRMS for 60 seconds Mechanical dimensions (L x W x H): 50.8 mm x 50.8 mm x 18 mm (2" x 2" x 0.71")
DESCRIPTION Th e GS1T70-D540/2 converter has been designed for the "U" interface of an ISDN-NTBA (Network Termination Basic Access) system with either 4B3T or 2B1Q standard trasmission. Two outputs, 5V/72mA and 40V/12mA are supplied. The converter offers short-circuit protection (shortcircuit on 40V output doesn't affect 5V output and the input power never exceeds the limits of the specification), input either voltage polarity, 80% minimum efficiency at maximum load, input and output filtering to meet very stringent noise requiremen ts. When the input voltage is below 18V, the converter offers a very high input impedance and a maximum quiescent current of 10µA according to the standard ETR 080.
In addition, the wide operating input voltage range allows it to operate within the whole range of LT (Line Termination) battery voltage and its relevant line resistance. 3000VRMS isolation voltage for 60 second is provided between input to output 2 and between output 1 and output 2. No insulation is provided between input and output 1. The design of the module has been conducted using, as reference standards, the following: EN 60950, VDE0878 part 1 class B (EMC), EN55022 class B (EMC), CCITT 430, ETS 300 012 an d ETS 300 047 (ISDN BASIC ACCESS, Safety an d Protection); anyway, please note that no certification processes have been carried out on the module itself.
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GS1T70-D540/2
ELECTRICAL CHARACTERISTICS (Tamb = 25°C unless otherwise specified) Std. Conditions: Line Termination voltage: 47 to 71V 87 to 115V
Symbol Vi Vist Vo1 Vo2 Vor1 Vor2 Io1 Po2 Parameter Input Voltage Start Up Input Voltage Output Voltage 1 Output Voltage 2 Output Ripple Voltage 1 Output Ripple Voltage 2 Output Current 1 Output Power 2
Line Resistance (Rs):
0 to 600 550 to 1400
Min 28 28 4.75 34 5 40 5 10 2 0 Typ Max 115 44 5.25 42 20 30 72 420 Unit V V V V mVpp mVpp mA mW
Test Conditions Std. Conditions See fig. 3 Std. Conditions Std. Conditions Std. Conditions BW = 0 to 20MHz Std. Conditions B W = 0 to 20MHz Std. Conditions Po2 = 410 mW Vo1 = 5V Std. Conditions Vo1 = 4.75 to 5.25V Vo2 = 34 to 42 V Std. Conditions Io1 = 2 to 72 mA Vo2 = 34 to 40V Std. Conditions Output Shorted (Indefinite time) Input to Output 2 Output 1 to Output 2 (*) f = 50 Hz Ground Fixed
Io2max Iosc2
Max Output Current 2 Output 2 Short Circuit Current Insula tion Voltage Mean Time Before Failure Operating Ambient Temperature Range Storage Temperature Range
12 9.8 3000 1 -20 - 40 +70 +85
mA mA VRMS Mhours °C °C
Vis MTBF Top Tstg
(*) no insulation is provided between input and output 1 OUTPUT POWER CHARACTERISTICS
LT (Line Termination Voltage) = 47V to 71V Rs (Line Resistance) = 0 to 600 Max Input Power (mW) 450 950 (*) 90 180 1050 (*) Min Min Output Output Power 1 Power 2 (5V)[mW] (40V)[mW] 320 320 40 40 320 0 410 0 45 Short circuit LT (Line Termination Voltage) = 87V to 99V Rs (Line Resistance) = 550 to 1400 Max Input Power (mW) 450 950 90 180 1050 Min Min Output Output Power 1 Power 2 (5V)[mW] (40V)[mW] 320 320 40 40 320 0 410 0 45 Short circuit
NT Status
NT Status
Activated Activated Emergency Deactivated Deactivated Emergency Activated with 40 V Sho rt circuit
Activated Activa ted Emergency De activated Deactivated Emergency Activated with 40V Short circuit
N.B.: with the following output loads: Po1 (5V) : 15 mW and Po2 (40 V) : 410 mW , maintained for a time t > 2s, Vo2 = 34 to 42 V (*) Note: the values indicated are subordinated to the available input power
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GS1T70-D540/2
Figure 1. Connection diagram and mechanical data
18.0 (0.71)
50.8 (2.00)
O 1 (0.04)
Bottom view
1.27 (0.05) 50.8 (2.00)
3 4
5.08 (0.2) 10.16 (0.4)
5 6
5.08 (0.2) 10.16 (0.4)
2 1
7.62 (0.3)
21.59 (0.85)
19.05 (0.75) 3.0 (1.18)
Package V. Dimensions in mm (inches). PIN DESCRIPTION Pin 1 2 3 4 5 6 Description Inpu t (either polarity) Inpu t (either polarity) +5V Output Return for +5V Output +40V Output Return for +40 V Output Figu re 2. Galvanic insulation barrier
Galvanic insulation barrier
out 1 5V out 2 40V
GA LVANIC INSULATION Galvanic insulation (3000 V for 60 s as specified in EN60950) is provided between the input and the output 1 (40 V output for the "S" interface). No insulation is provided between input and output 2 (+5 V for logics put on NT1 board). See figure 2.
INPUT
3000 V
RMS
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