产品系列

TSMG12-48D100

SMG12-48D100
DSL REMOTE POWER FEEDER: 48VDC INPUT, SINGLE ±60 TO ±100VDC/100mA OUTPUT
FEATURES :
. Designed for Span Powering of ETSI & ANSI DSL Systems
. High Efficiency .
.Input to Output IsolationAdjustable Output Voltage (120 to 200Vdc)
.Output Leakage
.Overload and No-Load Indications
. Outputs of Identical Units can be Paralleled for Increased Output Power
.two year Warranty .
. Open Frame Package
. High Reliability SMD Assembly
APPLICATIONS :
Open Frame Package
T1/E1 HDSL Voice Pair Gain Systems
. DSL Remotely Energized Systems
. Supports Single Loop Configurations
. General Remote Power Feeding Applications
. 48VdcTelecommunications Systems
. ETSI & ANSI Compatible Systems
DESCRIPTION :
The SMG12-48D100 is a 12 Watt DC/DC converter module designed especially for remote powerfeeding applications. The module may be located at the feeding side (LTU) and operates from 36 to 72Vdc input voltage. It provides an isolated balanced output of ±60 to ±100Vdc/60 to 100mA. The module is designed to support peak output power of up to 14W at 30% duty cycle and maximum 3 seconds in duration. The output may be configured as a balanced, negative or positive supply rail in reference to earth ground. Output voltage and current limits may be adjusted in the specified range by adding an external resistor. A high precision current limiting circuit is implemented on the output. This feature enables delivery of maximum allowed current through the line, while maintaining the TNV safety requirements. The module also provides unique reporting signals, which are required for DSL terminals, indicating output line current leakage to earth ground, and Overload and No-Load conditions. For simple identification of the faulty wire, different indications are given for positive or negative leakage. The unit is protected against input under/over voltage, output overload and shorted output for an unlimited period. The SMG12-48D100 is designed to work optimally in the remote subsystem. Optimized design for HDSL voice pair gain system requirements simplify integration and reduce overall system cost and time to market.
ABSOLUTE MAXIMUM RATINGS:
Input voltage : 36~72V
Storage temperature: -40oC~100oC
Isolation voltage(input to output): 1500VDC


PERFORMANCESPECIFICATION OFSMG12-48D100

Num

Parameter

Conditions

Unit

Specification

1

NoLoad Current

Vin=48VDC,Io=0A

Vo
Iin

Vo=120VIin<35mA

2

Input current

Vin=48V,Pout=12w

mA

Iin<330mA

3

Voltage Accuracy

Vin=36、48、72VDC
Io=10~56mA

Vo
Vp-p

118VDC<Vo<122VDC

4

Switching Frequency

Vin=48VDC
Io=0.05A

T

220kHz

5

Over-voltage protection

Vo=120VDC
Io=0.05A

Vin

>73V

6

Under-voltage protection

Vo=120VDC
Io=0.05A

Vin

<34V

7

Output ripple and noise

Vin=48VDC
Io=0.05A

Vp-p

<150mV

8

Efficiency

Vin=48VDC
Io=0.05A

η

81%,Vo=200VDC

9

Short circuit protection

Vin=48VDC

Iin

<24mA

10

Outputcurrent limit setting

Vin=48VDC
Vo=200V

 

Io<75mA

11

Outputcurrent limit setting

Vin=48VDC
Vo=120V

 

Io<100mA

12

Load regulation

Vin=48VDC
Io=0.01~0.05A

流程图:摘录: VVVVVVVVVVVVVVVVVVVVVVVVV Vo

<200mV,Vo=120V

13

Line regulation

Vin=36~72VDC
Io=0.05A

流程图:摘录: VVVVVVVVVVVVVVVVVVVVVVVVV Vo

<100mV,Vo=120V

14

CNT

Vcnt=5VVo=OFF,Vcnt==0V,Vo=ON

 

OK

15

No-load detection

Io<20%Iomax

light

OK

16

Over-load detection

Io>Iomax

light

OK

17

Leakage detection

out or -out reference to earch

light

OK

18

Ambient temperature

Derated from
+55oC by 280mW/oC

 

-25~+55oC

19

MTBF

   

100000Hours

20

Relative humidity

   

<93%

21

Isolation input and output

1500VDC,1min,0.5mA

 

OK


MECHANICAL DETAILS-HIGH PACKAGE
 
MECHANICAL DETAILS-LOW PACKAGE

 

PIN CONNECTIONS:


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