Thermoelectric cooler power supply
and laser diodes array control unit
PSC-120.2
 

Application

Thermoelectric cooler (TEC) power supply and laser diodes array (LDA) control unit PSC-120.2 ensure LDA temperature maintenance, pumping current pulses time parameters management and LDA PSL-120.1 power supply output current pulses amplitude measurement.
 

Functions

LDA has constant specified temperature because of current in TEC changes.

LDA pumping current pulses time parameters and operational temperature setup is done by build-in control items or by commands transferred from PC via serial port RS-485. LDA current pulses measured amplitudes and LDA temperature is displayed on build-in digital display and transfer to PC. Combined synchronous action of some power supply units is foreseen.

Characteristics of PSC-120.2

LDA operational temperature, °С +15 ... +25
LDA operation temperature maintenance discreetness, °С 0,1
LDA operation temperature measurement error, °С 0,1
LDA operation temperature long-term fluctuation, °С 0,2
Thermoelectric cooler maximum current, A 1,6
Thermoelectric cooler maximum potential drop, V 7,3
Thermoelectric fridge power supply efficiency factor
at maximum output current, not less than		 0,75
LDA pumping current pulses length range, us 60 ... 200
LDA pumping current pulses length discreetness, us 1
LDA pumping current cycle range, ms 10 ... 1000
LDA pumping current cycle discreetness, ms 1
Admissible ambient temperature without forced air cooling, °С up to +40
Admissible ambient temperature with air cooling at V=0.1…0.2m/s, °С up to +55
Overall dimensions, mm3 105х50х20



 

Primary power source’s requirements

  • Power supply at +58V: voltage deviation – not more than +5%, used pulsed current – not more than 10A, average used current – 130mA. It is recommended to use C-L-C ore active filter in this supply. In this case it is possible to decry supply voltage till +55V.
  • Power supply at +12V: voltage deviation – not more than +10%, used pulsed current – not more than 0.1A, average used current – 60mA.
  • Power supply at -12V: voltage deviation – not more than +10%, used current – not more than 15mA.