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Based on A7505 PCB mount HV DC-DC converter
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Temperature working range: -10°C ÷ 70°C
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Designed for long working life in harsh environment
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Architectural materials chosen to minimize issues due to thermal expansion
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Layout optimized for the worst foreseen environmental condition
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Redundancy of internal connections
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Connection and cabling with stress relief on solder points
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Stress absorption with silicon resin
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Several solutions from Aerospace electronics design
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Assembly optimized for easy maintenance operation
The CAEN Mod.A7505B is a solution designed for operating in challenging environmental and high thermal excursions. It relies on the high efficiency PCB High Voltage power supply A7505 embedded in a custom carrier.
In order to assure its functionality for long working periods under severe environmental conditions, several dedicated technical and electrical precautions have been implemented such as stress relief techniques on cabling and soldering points, electrical redundancies, PCB layout design, and use of specific materials to minimize the thermal expansion on PCB and housing mechanics.
These features make A7505B boxes ideal for Large Area experiments where the possibility of a prompt maintenance intervention is reduced.
Safety features include:
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Overcurrent detection: if the channel attempts to draw a current larger than Iset, the output voltage is automatically adjusted to keep the current below Iset limit. Under this condition, the channel behaves as a current generator.
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Protected against short circuits, sparks and humidity.
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A7526DB |
1 |
2600 V |
500 µA |
Digital control / permanent calibration storage |
-35° C ÷ +75° C |
5 mVpp |
SHV |
RS485 interface |
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A7505B |
1 |
1600 V |
500 µA |
Regulated providing external Low voltage |
-10°C ÷ 70°C |
5 mVpp |
SHV |
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A7501B |
1 |
2100 V |
100 µA |
Regulated providing external low voltage |
-10°C ÷ 70°C |
5 mVpp |
LEMO HV <br>(ERA.0S.250.CTL) |
Imon /Temperature<br>remote inputs |
Technical Specifications
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Packaging |
Custom Carrier |
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Output connector |
SHV RADIALL |
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COMM connector |
15 Pin Male High Density D-Sub |
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Operating temperature |
-55° C ÷ +80° C |
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Storage temperature |
-55° C ÷ +85° C |
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Voltage Supply (Vin) |
+12 V ± 10% |
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Output Voltage (Vout) |
0 ÷ ±1600 V |
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Output polarity |
Available positive or negative |
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Enable |
If Enable > 2.8 V Channel active |
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Vmon Output (positive analog monitor) |
0 ÷ +2.6 V |
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Vset Input (positive analog command) |
0 ÷ +2.6 V |
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Iset Input (positive analog command) |
0 ÷ +2.5 V |
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Imon Output (positive analog monitor) |
0 ÷ +2.5 V |
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Status OVC bit |
0÷5 V (low = OVC) |
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DVout/Vout (for ±5% Vin variations) |
<1.5 X 10-3 @ full scale |
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Maximum Output Current (Iout) |
500 µA @ ±1600 V |
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Power requirement |
<1.6 W; |
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Efficency |
>60% @ Vout >1200 V (0° C ÷ +40° C) |
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Output Ripple (Full Load) |
Typical 5mVpp; Maximum 10mVpp |
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Vout / Temperature coefficient |
600 V |
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Vset vs. Vout Integral Non Linearity |
<±0.2% (-20° C ÷ +70° C) |
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Vmon vs. Vout Integral Non Linearity |
<±0.2% (-20° C ÷ +70° C) |
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Electromagnetic compatibility |
Weak emission of electromagnetic impulse and RF; one-piece metal shielding with several ground connections |
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Uniformity of a lot |
< 1 % |
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Protection |
Over current short circuit, sparks and humidity |
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